<XBRL>
<?xml version="1.0" encoding="us-ascii" standalone="no"?>
<!--XBRL document created with Bowne Tagger XBRL Enabler by Bowne Software version 10.0.0.46-->
<!--Modified on: 2/23/2012 9:17:36 AM-->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#BalanceSheet" roleURI="http://mtb.com/role/BalanceSheet" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#StatementOfIncome" roleURI="http://mtb.com/role/StatementOfIncome" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#StatementOfCashFlows" roleURI="http://mtb.com/role/StatementOfCashFlows" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#BalanceSheetParenthetical" roleURI="http://mtb.com/role/BalanceSheetParenthetical" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#DocumentAndEntityInformation" roleURI="http://mtb.com/role/DocumentAndEntityInformation" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#StatementOfChangesInStockholdersEquity" roleURI="http://mtb.com/role/StatementOfChangesInStockholdersEquity" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#StatementOfChangesInStockholdersEquityParenthetical" roleURI="http://mtb.com/role/StatementOfChangesInStockholdersEquityParenthetical" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#SignificantAccountingPolicies" roleURI="http://mtb.com/role/SignificantAccountingPolicies" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#Acquisitions" roleURI="http://mtb.com/role/Acquisitions" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#InvestmentSecurities" roleURI="http://mtb.com/role/InvestmentSecurities" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#Borrowings" roleURI="http://mtb.com/role/Borrowings" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PensionPlansAndOtherPostretirementBenefits" roleURI="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefits" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#EarningsPerCommonShare" roleURI="http://mtb.com/role/EarningsPerCommonShare" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#ComprehensiveIncome" roleURI="http://mtb.com/role/ComprehensiveIncome" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#DerivativeFinancialInstruments" roleURI="http://mtb.com/role/DerivativeFinancialInstruments" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#FairValueMeasurements" roleURI="http://mtb.com/role/FairValueMeasurements" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#CommitmentsAndContingencies" roleURI="http://mtb.com/role/CommitmentsAndContingencies" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#SegmentInformation" roleURI="http://mtb.com/role/SegmentInformation" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#RelationshipWithOtherEntities" roleURI="http://mtb.com/role/RelationshipWithOtherEntities" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#BorrowingsDetails" roleURI="http://mtb.com/role/BorrowingsDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#CommitmentsAndContingenciesDetails" roleURI="http://mtb.com/role/CommitmentsAndContingenciesDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#CommitmentsAndContingenciesTables" roleURI="http://mtb.com/role/CommitmentsAndContingenciesTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#RelationshipWithCompaniesDetails" roleURI="http://mtb.com/role/RelationshipWithCompaniesDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PensionPlansAndOtherPostretirementBenefitsTables" roleURI="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PensionPlansAndOtherPostretirementBenefitsDetails" roleURI="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#EarningsPerCommonShareTables" roleURI="http://mtb.com/role/EarningsPerCommonShareTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#EarningsPerCommonShareDetails" roleURI="http://mtb.com/role/EarningsPerCommonShareDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#SegmentInformationTables" roleURI="http://mtb.com/role/SegmentInformationTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#SegmentInformationDetails" roleURI="http://mtb.com/role/SegmentInformationDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AcquisitionsTables" roleURI="http://mtb.com/role/AcquisitionsTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AcquisitionsDetails" roleURI="http://mtb.com/role/AcquisitionsDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#ComprehensiveIncomeTables" roleURI="http://mtb.com/role/ComprehensiveIncomeTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#ComprehensiveIncomeDetails" roleURI="http://mtb.com/role/ComprehensiveIncomeDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#DerivativeFinancialInstrumentsDetails" roleURI="http://mtb.com/role/DerivativeFinancialInstrumentsDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#DerivativeFinancialInstrumentsTables" roleURI="http://mtb.com/role/DerivativeFinancialInstrumentsTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#InvestmentSecuritiesDetails" roleURI="http://mtb.com/role/InvestmentSecuritiesDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#InvestmentSecuritiesTables" roleURI="http://mtb.com/role/InvestmentSecuritiesTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#FairValueMeasurementsDetails" roleURI="http://mtb.com/role/FairValueMeasurementsDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#FairValueMeasurementsTables" roleURI="http://mtb.com/role/FairValueMeasurementsTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#VariableInterestEntitiesAndAssetSecuritizationsDetails" roleURI="http://mtb.com/role/VariableInterestEntitiesAndAssetSecuritizationsDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#VariableInterestEntitiesAndAssetSecuritizations" roleURI="http://mtb.com/role/VariableInterestEntitiesAndAssetSecuritizations" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#SignificantAccountingPoliciesPloicies" roleURI="http://mtb.com/role/SignificantAccountingPoliciesPloicies" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PensionPlansAndOtherPostretirementBenefitsDetailsTextual" roleURI="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#InvestmentSecuritiesDetails1" roleURI="http://mtb.com/role/InvestmentSecuritiesDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#InvestmentSecuritiesDetails2" roleURI="http://mtb.com/role/InvestmentSecuritiesDetails2" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#InvestmentSecuritiesDetails3" roleURI="http://mtb.com/role/InvestmentSecuritiesDetails3" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#InvestmentSecuritiesDetailsTextual" roleURI="http://mtb.com/role/InvestmentSecuritiesDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#ShareholdersEquity" roleURI="http://mtb.com/role/ShareholdersEquity" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#ShareholdersEquityTables" roleURI="http://mtb.com/role/ShareholdersEquityTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#ShareholdersEquityDetails" roleURI="http://mtb.com/role/ShareholdersEquityDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#InvestmentSecuritiesDetails4" roleURI="http://mtb.com/role/InvestmentSecuritiesDetails4" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#LoansAndLeasesAndAllowanceForCreditLosses" roleURI="http://mtb.com/role/LoansAndLeasesAndAllowanceForCreditLosses" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AcquisitionsDetails1" roleURI="http://mtb.com/role/AcquisitionsDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AcquisitionsDetails2" roleURI="http://mtb.com/role/AcquisitionsDetails2" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AcquisitionsDetails3" roleURI="http://mtb.com/role/AcquisitionsDetails3" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#ComprehensiveIncomeDetails1" roleURI="http://mtb.com/role/ComprehensiveIncomeDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#DerivativeFinancialInstrumentsDetails2" roleURI="http://mtb.com/role/DerivativeFinancialInstrumentsDetails2" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#DerivativeFinancialInstrumentsDetails1" roleURI="http://mtb.com/role/DerivativeFinancialInstrumentsDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#DerivativeFinancialInstrumentsDetailsTextual" roleURI="http://mtb.com/role/DerivativeFinancialInstrumentsDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#FairValueMeasurementsDetails2" roleURI="http://mtb.com/role/FairValueMeasurementsDetails2" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#FairValueMeasurementsDetailsTextual" roleURI="http://mtb.com/role/FairValueMeasurementsDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#SegmentInformationDetails1" roleURI="http://mtb.com/role/SegmentInformationDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#SegmentInformationDetailsTextual" roleURI="http://mtb.com/role/SegmentInformationDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#FairValueMeasurementsDetails1" roleURI="http://mtb.com/role/FairValueMeasurementsDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AcquisitionsDetailsTextual" roleURI="http://mtb.com/role/AcquisitionsDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#SignificantAccountingPoliciesDetails" roleURI="http://mtb.com/role/SignificantAccountingPoliciesDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#ParentCompanyFinancialStatements" roleURI="http://mtb.com/role/ParentCompanyFinancialStatements" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#ParentCompanyFinancialStatementsTables" roleURI="http://mtb.com/role/ParentCompanyFinancialStatementsTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#ParentCompanyFinancialStatementsDetails" roleURI="http://mtb.com/role/ParentCompanyFinancialStatementsDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#ParentCompanyFinancialStatementsDetails1" roleURI="http://mtb.com/role/ParentCompanyFinancialStatementsDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#ParentCompanyFinancialStatementsDetails2" roleURI="http://mtb.com/role/ParentCompanyFinancialStatementsDetails2" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#OtherIncomeAndOtherExpenseDetails" roleURI="http://mtb.com/role/OtherIncomeAndOtherExpenseDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#OtherIncomeAndOtherExpenseTables" roleURI="http://mtb.com/role/OtherIncomeAndOtherExpenseTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#OtherIncomeAndOtherExpense" roleURI="http://mtb.com/role/OtherIncomeAndOtherExpense" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#CommitmentsAndContingenciesDetails1" roleURI="http://mtb.com/role/CommitmentsAndContingenciesDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#CommitmentsAndContingenciesDetailsTextual" roleURI="http://mtb.com/role/CommitmentsAndContingenciesDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#InvestmentSecuritiesDetails5" roleURI="http://mtb.com/role/InvestmentSecuritiesDetails5" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#InvestmentSecuritiesDetails6" roleURI="http://mtb.com/role/InvestmentSecuritiesDetails6" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PremisesAndEquipment" roleURI="http://mtb.com/role/PremisesAndEquipment" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PremisesAndEquipmentDetails" roleURI="http://mtb.com/role/PremisesAndEquipmentDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#CapitalizedServicingAssets" roleURI="http://mtb.com/role/CapitalizedServicingAssets" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#CapitalizedServicingAssetsTables" roleURI="http://mtb.com/role/CapitalizedServicingAssetsTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#CapitalizedServicingAssetsDetails" roleURI="http://mtb.com/role/CapitalizedServicingAssetsDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#CapitalizedServicingAssetsDetails1" roleURI="http://mtb.com/role/CapitalizedServicingAssetsDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PremisesAndEquipmentTables" roleURI="http://mtb.com/role/PremisesAndEquipmentTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#CapitalizedServicingAssetsDetailsTextual" roleURI="http://mtb.com/role/CapitalizedServicingAssetsDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#GoodwillAndOtherIntangibleAssets" roleURI="http://mtb.com/role/GoodwillAndOtherIntangibleAssets" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#GoodwillAndOtherIntangibleAssetsTables" roleURI="http://mtb.com/role/GoodwillAndOtherIntangibleAssetsTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#GoodwillAndOtherIntangibleAssetsDetails" roleURI="http://mtb.com/role/GoodwillAndOtherIntangibleAssetsDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#GoodwillAndOtherIntangibleAssetsDetails1" roleURI="http://mtb.com/role/GoodwillAndOtherIntangibleAssetsDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#GoodwillAndOtherIntangibleAssetsDetails2" roleURI="http://mtb.com/role/GoodwillAndOtherIntangibleAssetsDetails2" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#GoodwillAndOtherIntangibleAssetsDetailsTextual" roleURI="http://mtb.com/role/GoodwillAndOtherIntangibleAssetsDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PensionPlansAndOtherPostretirementBenefitsDetails1" roleURI="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PensionPlansAndOtherPostretirementBenefitsDetails2" roleURI="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails2" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PensionPlansAndOtherPostretirementBenefitsDetails3" roleURI="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails3" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PensionPlansAndOtherPostretirementBenefitsDetails4" roleURI="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails4" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PensionPlansAndOtherPostretirementBenefitsDetails5" roleURI="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails5" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PensionPlansAndOtherPostretirementBenefitsDetails6" roleURI="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails6" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PensionPlansAndOtherPostretirementBenefitsDetails7" roleURI="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails7" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PensionPlansAndOtherPostretirementBenefitsDetails8" roleURI="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails8" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PensionPlansAndOtherPostretirementBenefitsDetails9" roleURI="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails9" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#InternationalActivities" roleURI="http://mtb.com/role/InternationalActivities" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#InternationalActivitiesDetails" roleURI="http://mtb.com/role/InternationalActivitiesDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#BorrowingsDetailsTextual" roleURI="http://mtb.com/role/BorrowingsDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#BorrowingsDetails1" roleURI="http://mtb.com/role/BorrowingsDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#BorrowingsDetails2" roleURI="http://mtb.com/role/BorrowingsDetails2" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#BorrowingsDetails3" roleURI="http://mtb.com/role/BorrowingsDetails3" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#BorrowingsTables" roleURI="http://mtb.com/role/BorrowingsTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#EarningsPerShareDetails1" roleURI="http://mtb.com/role/EarningsPerShareDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#StockBasedCompensationPlans" roleURI="http://mtb.com/role/StockBasedCompensationPlans" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#StockBasedCompensationPlansTables" roleURI="http://mtb.com/role/StockBasedCompensationPlansTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#StockBasedCompensationPlansDetails" roleURI="http://mtb.com/role/StockBasedCompensationPlansDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#StockBasedCompensationPlansDetails1" roleURI="http://mtb.com/role/StockBasedCompensationPlansDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#StockBasedCompensationPlansDetailsTextual" roleURI="http://mtb.com/role/StockBasedCompensationPlansDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#IncomeTaxes" roleURI="http://mtb.com/role/IncomeTaxes" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#IncomeTaxesTables" roleURI="http://mtb.com/role/IncomeTaxesTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#IncomeTaxesDetails" roleURI="http://mtb.com/role/IncomeTaxesDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#IncomeTaxesDetails1" roleURI="http://mtb.com/role/IncomeTaxesDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#IncomeTaxesDetails2" roleURI="http://mtb.com/role/IncomeTaxesDetails2" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#IncomeTaxesDetails3" roleURI="http://mtb.com/role/IncomeTaxesDetails3" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#IncomeTaxesDetailsTextual" roleURI="http://mtb.com/role/IncomeTaxesDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#ComprehensiveIncomeDetailsTextual" roleURI="http://mtb.com/role/ComprehensiveIncomeDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#RegulatoryMatters" roleURI="http://mtb.com/role/RegulatoryMatters" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#RegulatoryMattersTables" roleURI="http://mtb.com/role/RegulatoryMattersTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#RegulatoryMattersDetails" roleURI="http://mtb.com/role/RegulatoryMattersDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#RegulatoryMattersDetailsTextual" roleURI="http://mtb.com/role/RegulatoryMattersDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#RelationshipWithAcquiree" roleURI="http://mtb.com/role/RelationshipWithAcquiree" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#RelationshipWithAcquireeDetails" roleURI="http://mtb.com/role/RelationshipWithAcquireeDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AllowanceForCreditLosses" roleURI="http://mtb.com/role/AllowanceForCreditLosses" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AllowanceForCreditLossesDetails" roleURI="http://mtb.com/role/AllowanceForCreditLossesDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AllowanceForCreditLossesTables" roleURI="http://mtb.com/role/AllowanceForCreditLossesTables" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AllowanceForCreditLossesDetails1" roleURI="http://mtb.com/role/AllowanceForCreditLossesDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AllowanceForCreditLossesDetails2" roleURI="http://mtb.com/role/AllowanceForCreditLossesDetails2" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AllowanceForCreditLossesDetails3" roleURI="http://mtb.com/role/AllowanceForCreditLossesDetails3" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AllowanceForCreditLossesDetails4" roleURI="http://mtb.com/role/AllowanceForCreditLossesDetails4" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AllowanceForCreditLossesDetails5" roleURI="http://mtb.com/role/AllowanceForCreditLossesDetails5" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AllowanceForCreditLossesDetails6" roleURI="http://mtb.com/role/AllowanceForCreditLossesDetails6" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#AllowanceForCreditLossesDetailsTextual" roleURI="http://mtb.com/role/AllowanceForCreditLossesDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#PensionPlansAndOtherPostretirementBenefitsDetails10" roleURI="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails10" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#ParentCompanyFinancialStatementsDetailsTextual" roleURI="http://mtb.com/role/ParentCompanyFinancialStatementsDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#LoansAndLeasesDetails" roleURI="http://mtb.com/role/LoansAndLeasesDetails" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#LoansAndLeasesDetails1" roleURI="http://mtb.com/role/LoansAndLeasesDetails1" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#LoansAndLeasesDetails2" roleURI="http://mtb.com/role/LoansAndLeasesDetails2" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#LoansAndLeasesDetails4" roleURI="http://mtb.com/role/LoansAndLeasesDetails4" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#LoansAndLeasesDetails3" roleURI="http://mtb.com/role/LoansAndLeasesDetails3" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#LoansAndLeasesDetails5" roleURI="http://mtb.com/role/LoansAndLeasesDetails5" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#LoansAndLeasesDetails6" roleURI="http://mtb.com/role/LoansAndLeasesDetails6" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#LoansAndLeasesDetailsTextual" roleURI="http://mtb.com/role/LoansAndLeasesDetailsTextual" />
  <roleRef xlink:type="simple" xlink:href="mtb-20111231.xsd#LoansAndLeasesTables" roleURI="http://mtb.com/role/LoansAndLeasesTables" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/BalanceSheet" xlink:title="0110 - Statement - Consolidated Balance Sheet">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_LiabilitiesAndStockholdersEquity" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_StockholdersEquity" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LiabilitiesAndStockholdersEquity" xlink:to="loc_StockholdersEquity" order="40" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TreasuryStockValue" xlink:label="loc_TreasuryStockValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_StockholdersEquity" xlink:to="loc_TreasuryStockValue" order="120" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_AccumulatedOtherComprehensiveIncomeLossNetOfTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_StockholdersEquity" xlink:to="loc_AccumulatedOtherComprehensiveIncomeLossNetOfTax" order="60" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_RetainedEarningsAccumulatedDeficit" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_StockholdersEquity" xlink:to="loc_RetainedEarningsAccumulatedDeficit" order="40" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="loc_AdditionalPaidInCapital" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_StockholdersEquity" xlink:to="loc_AdditionalPaidInCapital" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_CommonStockValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_StockholdersEquity" xlink:to="loc_CommonStockValue" order="140" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_PreferredStockValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_StockholdersEquity" xlink:to="loc_PreferredStockValue" order="80" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_Liabilities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LiabilitiesAndStockholdersEquity" xlink:to="loc_Liabilities" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_LongTermDebt" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Liabilities" xlink:to="loc_LongTermDebt" order="100" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase" xlink:label="loc_FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Liabilities" xlink:to="loc_FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Deposits" xlink:label="loc_Deposits" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Liabilities" xlink:to="loc_Deposits" order="80" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DepositsForeign" xlink:label="loc_DepositsForeign" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Deposits" xlink:to="loc_DepositsForeign" order="100" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TimeDeposits" xlink:label="loc_TimeDeposits" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Deposits" xlink:to="loc_TimeDeposits" order="80" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DepositsSavingsDeposits" xlink:label="loc_DepositsSavingsDeposits" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Deposits" xlink:to="loc_DepositsSavingsDeposits" order="40" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DepositsNegotiableOrderOfWithdrawalNOW" xlink:label="loc_DepositsNegotiableOrderOfWithdrawalNOW" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Deposits" xlink:to="loc_DepositsNegotiableOrderOfWithdrawalNOW" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Assets" xlink:label="loc_Assets" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_Goodwill" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="loc_Goodwill" order="40" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_PropertyPlantAndEquipmentNet" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="loc_PropertyPlantAndEquipmentNet" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:label="loc_LoansAndLeasesReceivableNetReportedAmount" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="loc_LoansAndLeasesReceivableNetReportedAmount" order="200" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowance" xlink:label="loc_LoansAndLeasesReceivableAllowance" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LoansAndLeasesReceivableNetReportedAmount" xlink:to="loc_LoansAndLeasesReceivableAllowance" order="40" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TradingSecurities" xlink:label="loc_TradingSecurities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="loc_TradingSecurities" order="140" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FederalFundsSold" xlink:label="loc_FederalFundsSold" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="loc_FederalFundsSold" order="160" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestBearingDepositsInBanks" xlink:label="loc_InterestBearingDepositsInBanks" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="loc_InterestBearingDepositsInBanks" order="180" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndDueFromBanks" xlink:label="loc_CashAndDueFromBanks" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="loc_CashAndDueFromBanks" order="60" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_CommonStockIssuable" xlink:label="mtb_CommonStockIssuable" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_StockholdersEquity" xlink:to="mtb_CommonStockIssuable" order="100" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_IntangibleAssetsNetExcludingGoodwill" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="loc_IntangibleAssetsNetExcludingGoodwill" order="80" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAssets" xlink:label="loc_OtherAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="loc_OtherAssets" order="120" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NoninterestBearingDepositLiabilitiesDomestic" xlink:label="loc_NoninterestBearingDepositLiabilitiesDomestic" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Deposits" xlink:to="loc_NoninterestBearingDepositLiabilitiesDomestic" order="60" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherLiabilities" xlink:label="loc_OtherLiabilities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Liabilities" xlink:to="loc_OtherLiabilities" order="60" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShortTermBorrowings" xlink:label="loc_ShortTermBorrowings" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Liabilities" xlink:to="loc_ShortTermBorrowings" order="40" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_InvestmentSecurities" xlink:label="mtb_InvestmentSecurities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="mtb_InvestmentSecurities" order="100" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherInvestmentSecurities" xlink:label="mtb_OtherInvestmentSecurities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_InvestmentSecurities" xlink:to="mtb_OtherInvestmentSecurities" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecurities" xlink:label="loc_HeldToMaturitySecurities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_InvestmentSecurities" xlink:to="loc_HeldToMaturitySecurities" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="loc_AvailableForSaleSecurities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_InvestmentSecurities" xlink:to="loc_AvailableForSaleSecurities" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:label="loc_LoansAndLeasesReceivableNetOfDeferredIncome" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LoansAndLeasesReceivableNetReportedAmount" xlink:to="loc_LoansAndLeasesReceivableNetOfDeferredIncome" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableGrossCarryingAmount" xlink:label="loc_LoansAndLeasesReceivableGrossCarryingAmount" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="loc_LoansAndLeasesReceivableGrossCarryingAmount" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableDeferredIncome" xlink:label="loc_LoansAndLeasesReceivableDeferredIncome" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="loc_LoansAndLeasesReceivableDeferredIncome" order="40" use="optional" weight="-1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/StatementOfIncome" xlink:title="0120 - Statement - Consolidated Statement of Income">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_NetIncomeLoss" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes" xlink:label="loc_ResultsOfOperationsIncomeBeforeIncomeTaxes" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetIncomeLoss" xlink:to="loc_ResultsOfOperationsIncomeBeforeIncomeTaxes" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss" xlink:label="loc_InterestIncomeExpenseAfterProvisionForLoanLoss" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ResultsOfOperationsIncomeBeforeIncomeTaxes" xlink:to="loc_InterestIncomeExpenseAfterProvisionForLoanLoss" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="loc_InterestIncomeExpenseNet" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestIncomeExpenseAfterProvisionForLoanLoss" xlink:to="loc_InterestIncomeExpenseNet" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestAndDividendIncomeOperating" xlink:label="loc_InterestAndDividendIncomeOperating" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestIncomeExpenseNet" xlink:to="loc_InterestAndDividendIncomeOperating" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestIncomeSecuritiesPurchasedUnderAgreementsToResell" xlink:label="loc_InterestIncomeSecuritiesPurchasedUnderAgreementsToResell" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestAndDividendIncomeOperating" xlink:to="loc_InterestIncomeSecuritiesPurchasedUnderAgreementsToResell" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestAndFeeIncomeLoansAndLeases" xlink:label="loc_InterestAndFeeIncomeLoansAndLeases" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestAndDividendIncomeOperating" xlink:to="loc_InterestAndFeeIncomeLoansAndLeases" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestIncomeDomesticDeposits" xlink:label="loc_InterestIncomeDomesticDeposits" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestAndDividendIncomeOperating" xlink:to="loc_InterestIncomeDomesticDeposits" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestIncomeFederalFundsSold" xlink:label="loc_InterestIncomeFederalFundsSold" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestAndDividendIncomeOperating" xlink:to="loc_InterestIncomeFederalFundsSold" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestAndDividendIncomeSecuritiesTradingOrMeasuredAtFairValue" xlink:label="loc_InterestAndDividendIncomeSecuritiesTradingOrMeasuredAtFairValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestAndDividendIncomeOperating" xlink:to="loc_InterestAndDividendIncomeSecuritiesTradingOrMeasuredAtFairValue" order="100" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestIncomeSecuritiesTaxable" xlink:label="loc_InterestIncomeSecuritiesTaxable" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestAndDividendIncomeOperating" xlink:to="loc_InterestIncomeSecuritiesTaxable" order="120" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestIncomeSecuritiesTaxExempt" xlink:label="loc_InterestIncomeSecuritiesTaxExempt" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestAndDividendIncomeOperating" xlink:to="loc_InterestIncomeSecuritiesTaxExempt" order="140" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_InterestExpense" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestIncomeExpenseNet" xlink:to="loc_InterestExpense" order="40" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpenseNegotiableOrderOfWithdrawalNOWDeposits" xlink:label="loc_InterestExpenseNegotiableOrderOfWithdrawalNOWDeposits" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestExpense" xlink:to="loc_InterestExpenseNegotiableOrderOfWithdrawalNOWDeposits" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpenseSavingsDeposits" xlink:label="loc_InterestExpenseSavingsDeposits" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestExpense" xlink:to="loc_InterestExpenseSavingsDeposits" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpenseTimeDeposits" xlink:label="loc_InterestExpenseTimeDeposits" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestExpense" xlink:to="loc_InterestExpenseTimeDeposits" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpenseForeignDeposits" xlink:label="loc_InterestExpenseForeignDeposits" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestExpense" xlink:to="loc_InterestExpenseForeignDeposits" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpenseShortTermBorrowings" xlink:label="loc_InterestExpenseShortTermBorrowings" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestExpense" xlink:to="loc_InterestExpenseShortTermBorrowings" order="100" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpenseLongTermDebt" xlink:label="loc_InterestExpenseLongTermDebt" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestExpense" xlink:to="loc_InterestExpenseLongTermDebt" order="120" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProvisionForLoanAndLeaseLosses" xlink:label="loc_ProvisionForLoanAndLeaseLosses" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_InterestIncomeExpenseAfterProvisionForLoanLoss" xlink:to="loc_ProvisionForLoanAndLeaseLosses" order="40" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NoninterestIncome" xlink:label="loc_NoninterestIncome" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ResultsOfOperationsIncomeBeforeIncomeTaxes" xlink:to="loc_NoninterestIncome" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_MortgageBankingRevenues" xlink:label="mtb_MortgageBankingRevenues" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NoninterestIncome" xlink:to="mtb_MortgageBankingRevenues" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FeesAndCommissionsDepositorAccounts" xlink:label="loc_FeesAndCommissionsDepositorAccounts" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NoninterestIncome" xlink:to="loc_FeesAndCommissionsDepositorAccounts" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FeesAndCommissionsFiduciaryAndTrustActivities" xlink:label="loc_FeesAndCommissionsFiduciaryAndTrustActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NoninterestIncome" xlink:to="loc_FeesAndCommissionsFiduciaryAndTrustActivities" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BrokerageCommissionsRevenue" xlink:label="loc_BrokerageCommissionsRevenue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NoninterestIncome" xlink:to="loc_BrokerageCommissionsRevenue" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TradingGainsLosses" xlink:label="loc_TradingGainsLosses" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NoninterestIncome" xlink:to="loc_TradingGainsLosses" order="100" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GainLossOnSaleOfSecuritiesNet" xlink:label="loc_GainLossOnSaleOfSecuritiesNet" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NoninterestIncome" xlink:to="loc_GainLossOnSaleOfSecuritiesNet" order="120" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet" xlink:label="loc_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NoninterestIncome" xlink:to="loc_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet" order="140" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ImpairmentOfInvestments" xlink:label="loc_ImpairmentOfInvestments" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet" xlink:to="loc_ImpairmentOfInvestments" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet" xlink:to="loc_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_IncomeLossFromEquityMethodInvestments" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NoninterestIncome" xlink:to="loc_IncomeLossFromEquityMethodInvestments" order="160" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NoninterestIncomeOtherOperatingIncome" xlink:label="loc_NoninterestIncomeOtherOperatingIncome" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NoninterestIncome" xlink:to="loc_NoninterestIncomeOtherOperatingIncome" order="180" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NoninterestExpense" xlink:label="loc_NoninterestExpense" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ResultsOfOperationsIncomeBeforeIncomeTaxes" xlink:to="loc_NoninterestExpense" order="60" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LaborAndRelatedExpense" xlink:label="loc_LaborAndRelatedExpense" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NoninterestExpense" xlink:to="loc_LaborAndRelatedExpense" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OccupancyNet" xlink:label="loc_OccupancyNet" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NoninterestExpense" xlink:to="loc_OccupancyNet" order="40" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SuppliesAndPostageExpense" xlink:label="loc_SuppliesAndPostageExpense" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NoninterestExpense" xlink:to="loc_SuppliesAndPostageExpense" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_AmortizationOfIntangibleAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NoninterestExpense" xlink:to="loc_AmortizationOfIntangibleAssets" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FederalDepositInsuranceCorporationPremiumExpense" xlink:label="loc_FederalDepositInsuranceCorporationPremiumExpense" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NoninterestExpense" xlink:to="loc_FederalDepositInsuranceCorporationPremiumExpense" order="100" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherNoninterestExpense" xlink:label="loc_OtherNoninterestExpense" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NoninterestExpense" xlink:to="loc_OtherNoninterestExpense" order="120" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_IncomeTaxExpenseBenefit" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetIncomeLoss" xlink:to="loc_IncomeTaxExpenseBenefit" order="40" use="optional" weight="-1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/StatementOfCashFlows" xlink:title="0130 - Statement - Consolidated Statement of Cash Flows">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_CashAndCashEquivalentsPeriodIncreaseDecrease" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_NetCashProvidedByUsedInFinancingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="loc_NetCashProvidedByUsedInFinancingActivities" order="60" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:label="loc_ProceedsFromPaymentsForOtherFinancingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_ProceedsFromPaymentsForOtherFinancingActivities" order="160" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock" xlink:label="loc_PaymentsOfDividendsPreferredStockAndPreferenceStock" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_PaymentsOfDividendsPreferredStockAndPreferenceStock" order="100" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="loc_PaymentsOfDividendsCommonStock" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_PaymentsOfDividendsCommonStock" order="80" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_RepaymentsOfLongTermDebt" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_RepaymentsOfLongTermDebt" order="20" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:label="loc_ProceedsFromRepaymentsOfShortTermDebt" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_ProceedsFromRepaymentsOfShortTermDebt" order="120" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInDeposits" xlink:label="loc_IncreaseDecreaseInDeposits" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_IncreaseDecreaseInDeposits" order="140" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_NetCashProvidedByUsedInInvestingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="loc_NetCashProvidedByUsedInInvestingActivities" order="40" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="loc_PaymentsForProceedsFromOtherInvestingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_PaymentsForProceedsFromOtherInvestingActivities" order="200" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsForProceedsFromProductiveAssets" xlink:label="loc_PaymentsForProceedsFromProductiveAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_PaymentsForProceedsFromProductiveAssets" order="100" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherInvestmentsNet" xlink:label="mtb_OtherInvestmentsNet" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="mtb_OtherInvestmentsNet" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsForProceedsFromLoansAndLeases" xlink:label="loc_PaymentsForProceedsFromLoansAndLeases" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_PaymentsForProceedsFromLoansAndLeases" order="180" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireOtherInvestments" xlink:label="loc_PaymentsToAcquireOtherInvestments" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_PaymentsToAcquireOtherInvestments" order="220" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireAvailableForSaleSecurities" xlink:label="loc_PaymentsToAcquireAvailableForSaleSecurities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_PaymentsToAcquireAvailableForSaleSecurities" order="260" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromSaleOfOtherInvestments" xlink:label="loc_ProceedsFromSaleOfOtherInvestments" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_ProceedsFromSaleOfOtherInvestments" order="280" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_NetCashProvidedByUsedInOperatingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="loc_NetCashProvidedByUsedInOperatingActivities" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities" xlink:label="loc_ProceedsFromSaleOfAvailableForSaleSecurities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_ProceedsFromSaleOfAvailableForSaleSecurities" order="60" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities" xlink:label="loc_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities" order="300" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities" xlink:label="loc_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities" order="240" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireHeldToMaturitySecurities" xlink:label="loc_PaymentsToAcquireHeldToMaturitySecurities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_PaymentsToAcquireHeldToMaturitySecurities" order="320" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_NetIncomeLoss" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_NetIncomeLoss" order="220" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AmortizationOfMortgageServicingRightsMSRs" xlink:label="loc_AmortizationOfMortgageServicingRightsMSRs" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_AmortizationOfMortgageServicingRightsMSRs" order="200" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_AmortizationOfIntangibleAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_AmortizationOfIntangibleAssets" order="180" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_DeferredIncomeTaxExpenseBenefit" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_DeferredIncomeTaxExpenseBenefit" order="160" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetImpairmentCharges" xlink:label="loc_AssetImpairmentCharges" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_AssetImpairmentCharges" order="140" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GainsLossesOnSalesOfAssets" xlink:label="loc_GainsLossesOnSalesOfAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_GainsLossesOnSalesOfAssets" order="100" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInLoansHeldForSale" xlink:label="loc_IncreaseDecreaseInLoansHeldForSale" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_IncreaseDecreaseInLoansHeldForSale" order="80" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProvisionForLoanAndLeaseLosses" xlink:label="loc_ProvisionForLoanAndLeaseLosses" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_ProvisionForLoanAndLeaseLosses" order="240" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet" xlink:label="loc_IncreaseDecreaseInOtherOperatingCapitalNet" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_IncreaseDecreaseInOtherOperatingCapitalNet" order="60" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities" xlink:label="loc_IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities" order="40" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromPaymentsForInInterestBearingDepositsInBanks" xlink:label="loc_ProceedsFromPaymentsForInInterestBearingDepositsInBanks" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_ProceedsFromPaymentsForInInterestBearingDepositsInBanks" order="140" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromIssuanceOfRedeemablePreferredStock" xlink:label="loc_ProceedsFromIssuanceOfRedeemablePreferredStock" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_ProceedsFromIssuanceOfRedeemablePreferredStock" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_PaymentsToAcquireBusinessesNetOfCashAcquired" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_PaymentsToAcquireBusinessesNetOfCashAcquired" order="120" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_PurchaseOfTrustPreferredStock" xlink:label="mtb_PurchaseOfTrustPreferredStock" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="mtb_PurchaseOfTrustPreferredStock" order="20" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromPaymentsForSecuritiesPurchasedUnderAgreementsToResell" xlink:label="loc_ProceedsFromPaymentsForSecuritiesPurchasedUnderAgreementsToResell" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_ProceedsFromPaymentsForSecuritiesPurchasedUnderAgreementsToResell" order="160" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock" xlink:label="loc_PaymentsForRepurchaseOfRedeemablePreferredStock" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_PaymentsForRepurchaseOfRedeemablePreferredStock" order="60" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DepreciationNonproduction" xlink:label="loc_DepreciationNonproduction" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_DepreciationNonproduction" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_NetChangeInAccruedInterestReceivablePayable" xlink:label="mtb_NetChangeInAccruedInterestReceivablePayable" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="mtb_NetChangeInAccruedInterestReceivablePayable" order="120" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans" xlink:label="loc_ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans" order="40" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/BalanceSheetParenthetical" xlink:title="0111 - Statement - Consolidated Balance Sheet (Parenthetical)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/DocumentAndEntityInformation" xlink:title="00 - Document - Document and Entity Information" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/StatementOfChangesInStockholdersEquity" xlink:title="0140 - Statement - Consolidated Statement of Changes in Shareholders' Equity">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:label="loc_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_NetIncomeLoss" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:label="loc_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease" xlink:label="loc_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease" xlink:to="loc_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease" order="100" use="optional" weight="1" priority="1" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease" xlink:to="loc_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease" order="80" use="optional" weight="1" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease" xlink:to="loc_NetIncomeLoss" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:label="loc_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease" xlink:to="loc_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax" xlink:label="loc_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease" xlink:to="loc_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax" order="60" use="optional" weight="-1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/StatementOfChangesInStockholdersEquityParenthetical" xlink:title="0141 - Statement - Consolidated Statement of Changes in Shareholders' Equity (Parenthetical)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/SignificantAccountingPolicies" xlink:title="0201 - Disclosure - Significant accounting policies" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/Acquisitions" xlink:title="0202 - Disclosure - Acquisitions">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/InvestmentSecurities" xlink:title="0203 - Disclosure - Investment securities" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/Borrowings" xlink:title="0209 - Disclosure - Borrowings" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefits" xlink:title="0212 - Disclosure - Pension plans and other postretirement benefits" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/EarningsPerCommonShare" xlink:title="0214 - Disclosure - Earnings per common share" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/ComprehensiveIncome" xlink:title="0215 - Disclosure - Comprehensive income" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/DerivativeFinancialInstruments" xlink:title="0218 - Disclosure - Derivative financial instruments" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/FairValueMeasurements" xlink:title="0220 - Disclosure - Fair value measurements" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/CommitmentsAndContingencies" xlink:title="0221 - Disclosure - Commitments and contingencies" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/SegmentInformation" xlink:title="0222 - Disclosure - Segment information" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/RelationshipWithOtherEntities" xlink:title="0225 - Disclosure - Relationship with Bayview Lending Group LLC and Bayview Financial Holdings, L.P." />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/BorrowingsDetails" xlink:title="0609 - Disclosure - Borrowings (Details)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/CommitmentsAndContingenciesDetails" xlink:title="0621 - Disclosure - Commitments and contingencies (Details)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/CommitmentsAndContingenciesTables" xlink:title="0521 - Disclosure - Commitments and contingencies (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/RelationshipWithCompaniesDetails" xlink:title="0625 - Disclosure - Relationship with Bayview Lending Group LLC and Bayview Financial Holdings, L.P. (Details)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsTables" xlink:title="0512 - Disclosure - Pension plans and other postretirement benefits (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails" xlink:title="0612 - Disclosure - Pension plans and other postretirement benefits (Details)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="loc_DefinedBenefitPlanNetPeriodicBenefitCost" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialNetGainsLosses" xlink:label="loc_DefinedBenefitPlanActuarialNetGainsLosses" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="loc_DefinedBenefitPlanActuarialNetGainsLosses" order="100" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:label="loc_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="loc_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="loc_DefinedBenefitPlanExpectedReturnOnPlanAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="loc_DefinedBenefitPlanExpectedReturnOnPlanAssets" order="60" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_DefinedBenefitPlanInterestCost" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="loc_DefinedBenefitPlanInterestCost" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_DefinedBenefitPlanServiceCost" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="loc_DefinedBenefitPlanServiceCost" order="20" use="optional" weight="1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/EarningsPerCommonShareTables" xlink:title="0514 - Disclosure - Earnings per common share (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/EarningsPerCommonShareDetails" xlink:title="0614 - Disclosure - Earnings per common share (Details)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_WeightedAverageNumberOfSharesOutstandingBasic" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_UnvestedStockBasedCompensationAwards" xlink:label="mtb_UnvestedStockBasedCompensationAwards" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="mtb_UnvestedStockBasedCompensationAwards" order="20" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_WeightedAverageNumberOfDilutedSharesOutstanding" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="mtb_UnvestedStockBasedCompensationAwards" order="60" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_CommonSharesOutstandingIncludingCommonStockIssuableAndUnvestedStockBasedCompensationAwards" xlink:label="mtb_CommonSharesOutstandingIncludingCommonStockIssuableAndUnvestedStockBasedCompensationAwards" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="mtb_CommonSharesOutstandingIncludingCommonStockIssuableAndUnvestedStockBasedCompensationAwards" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:label="loc_WeightedAverageNumberDilutedSharesOutstandingAdjustment" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="loc_WeightedAverageNumberDilutedSharesOutstandingAdjustment" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="loc_NetIncomeLossAvailableToCommonStockholdersBasic" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_IncomeAttributableToUnvestedStockBasedCompensationAwardsBasic" xlink:label="mtb_IncomeAttributableToUnvestedStockBasedCompensationAwardsBasic" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:to="mtb_IncomeAttributableToUnvestedStockBasedCompensationAwardsBasic" order="40" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_NetIncomeLossAvailableToCommonStockholdersBasicBeforeUnvestedStockBasedCompensationAwardsAdjustment" xlink:label="mtb_NetIncomeLossAvailableToCommonStockholdersBasicBeforeUnvestedStockBasedCompensationAwardsAdjustment" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:to="mtb_NetIncomeLossAvailableToCommonStockholdersBasicBeforeUnvestedStockBasedCompensationAwardsAdjustment" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_AmortizationsOfPreferredStockDiscount" xlink:label="mtb_AmortizationsOfPreferredStockDiscount" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_NetIncomeLossAvailableToCommonStockholdersBasicBeforeUnvestedStockBasedCompensationAwardsAdjustment" xlink:to="mtb_AmortizationsOfPreferredStockDiscount" order="20" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_NetIncomeLoss" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_NetIncomeLossAvailableToCommonStockholdersBasicBeforeUnvestedStockBasedCompensationAwardsAdjustment" xlink:to="loc_NetIncomeLoss" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:label="loc_NetIncomeLossAvailableToCommonStockholdersDiluted" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_NetIncomeLossAvailableToCommonStockholdersDilutedBeforeUnvestedStockBasedCompensationAwardsAdjustment" xlink:label="mtb_NetIncomeLossAvailableToCommonStockholdersDilutedBeforeUnvestedStockBasedCompensationAwardsAdjustment" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:to="mtb_NetIncomeLossAvailableToCommonStockholdersDilutedBeforeUnvestedStockBasedCompensationAwardsAdjustment" order="20" use="optional" weight="1" priority="1" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="mtb_CommonSharesOutstandingIncludingCommonStockIssuableAndUnvestedStockBasedCompensationAwards" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DividendsPreferredStock" xlink:label="loc_DividendsPreferredStock" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_NetIncomeLossAvailableToCommonStockholdersBasicBeforeUnvestedStockBasedCompensationAwardsAdjustment" xlink:to="loc_DividendsPreferredStock" order="60" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_IncomeAttributableToUnvestedStockBasedCompensationAwardsDiluted" xlink:label="mtb_IncomeAttributableToUnvestedStockBasedCompensationAwardsDiluted" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:to="mtb_IncomeAttributableToUnvestedStockBasedCompensationAwardsDiluted" order="40" use="optional" weight="-1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/SegmentInformationTables" xlink:title="0522 - Disclosure - Segment information (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/SegmentInformationDetails" xlink:title="0622 - Disclosure - Segment information (Details)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_ProfitLoss" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_IncomeTaxExpenseBenefit" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ProfitLoss" xlink:to="loc_IncomeTaxExpenseBenefit" order="40" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ProfitLoss" xlink:to="loc_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_SegmentReportingInformationDepreciationAndOtherAmortization" xlink:label="mtb_SegmentReportingInformationDepreciationAndOtherAmortization" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="mtb_SegmentReportingInformationDepreciationAndOtherAmortization" order="100" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdjustmentForAmortization" xlink:label="loc_AdjustmentForAmortization" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="loc_AdjustmentForAmortization" order="80" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProvisionForLoanLeaseAndOtherLosses" xlink:label="loc_ProvisionForLoanLeaseAndOtherLosses" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="loc_ProvisionForLoanLeaseAndOtherLosses" order="60" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SegmentReportingInformationRevenue" xlink:label="loc_SegmentReportingInformationRevenue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="loc_SegmentReportingInformationRevenue" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NoninterestIncome" xlink:label="loc_NoninterestIncome" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_SegmentReportingInformationRevenue" xlink:to="loc_NoninterestIncome" order="40" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestRevenueExpense" xlink:label="loc_InterestRevenueExpense" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_SegmentReportingInformationRevenue" xlink:to="loc_InterestRevenueExpense" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherNonInterestExpense" xlink:label="mtb_OtherNonInterestExpense" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="mtb_OtherNonInterestExpense" order="40" use="optional" weight="-1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AcquisitionsTables" xlink:title="0502 - Disclosure - Acquisitions (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AcquisitionsDetails" xlink:title="06023 - Disclosure - Acquisitions (Details 3)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherNoninterestExpense" xlink:label="loc_OtherNoninterestExpense" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SuppliesAndPostageExpense" xlink:label="loc_SuppliesAndPostageExpense" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LaborAndRelatedExpense" xlink:label="loc_LaborAndRelatedExpense" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed" xlink:label="loc_BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed" xlink:to="loc_OtherNoninterestExpense" order="80" use="optional" weight="1" priority="1" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed" xlink:to="loc_SuppliesAndPostageExpense" order="60" use="optional" weight="1" priority="1" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed" xlink:to="loc_LaborAndRelatedExpense" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OccupancyNet" xlink:label="loc_OccupancyNet" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed" xlink:to="loc_OccupancyNet" order="40" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/ComprehensiveIncomeTables" xlink:title="0515 - Disclosure - Comprehensive income (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/ComprehensiveIncomeDetails" xlink:title="0615 - Disclosure - Comprehensive income (Details)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" xlink:label="loc_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecrease" xlink:label="loc_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecrease" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" xlink:to="loc_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecrease" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss" xlink:label="loc_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" xlink:to="loc_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeBeforeTax" xlink:label="loc_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeBeforeTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" xlink:to="loc_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeBeforeTax" order="40" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_2" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax" xlink:label="loc_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss" xlink:to="loc_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeReclassificationAdjustmentTransferOfAfsSecuritiesToHtmUnrealizedHoldingLossesBeforeTax" xlink:label="mtb_OtherComprehensiveIncomeReclassificationAdjustmentTransferOfAfsSecuritiesToHtmUnrealizedHoldingLossesBeforeTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss" xlink:to="mtb_OtherComprehensiveIncomeReclassificationAdjustmentTransferOfAfsSecuritiesToHtmUnrealizedHoldingLossesBeforeTax" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesAllOtherArisingDuringPeriodBeforeTax" xlink:label="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesAllOtherArisingDuringPeriodBeforeTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax" xlink:to="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesAllOtherArisingDuringPeriodBeforeTax" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax" xlink:label="loc_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax" xlink:to="loc_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax" order="20" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPeriodIncreaseDecrease" xlink:label="loc_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPeriodIncreaseDecrease" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" xlink:to="loc_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPeriodIncreaseDecrease" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentBeforeTaxPeriodIncreaseDecrease" xlink:label="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentBeforeTaxPeriodIncreaseDecrease" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss" xlink:to="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentBeforeTaxPeriodIncreaseDecrease" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentBeforeTaxPeriodIncreaseDecrease" xlink:label="mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentBeforeTaxPeriodIncreaseDecrease" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss" xlink:to="mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentBeforeTaxPeriodIncreaseDecrease" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OttiChargesRecognizedInNetIncomeBeforeTaxAmount" xlink:label="mtb_OttiChargesRecognizedInNetIncomeBeforeTaxAmount" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentBeforeTaxPeriodIncreaseDecrease" xlink:to="mtb_OttiChargesRecognizedInNetIncomeBeforeTaxAmount" order="20" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesWithOttiArisingDuringPeriodBeforeTax" xlink:label="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesWithOttiArisingDuringPeriodBeforeTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentBeforeTaxPeriodIncreaseDecrease" xlink:to="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesWithOttiArisingDuringPeriodBeforeTax" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedWithOttiInNetIncomeBeforeTax" xlink:label="mtb_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedWithOttiInNetIncomeBeforeTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentBeforeTaxPeriodIncreaseDecrease" xlink:to="mtb_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedWithOttiInNetIncomeBeforeTax" order="40" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiLossesBeforeTaxRecognizedInEarnings" xlink:label="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiLossesBeforeTaxRecognizedInEarnings" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentBeforeTaxPeriodIncreaseDecrease" xlink:to="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiLossesBeforeTaxRecognizedInEarnings" order="60" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnHeldToMaturitySecuritiesArisingDuringPeriodBeforeTax" xlink:label="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnHeldToMaturitySecuritiesArisingDuringPeriodBeforeTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentBeforeTaxPeriodIncreaseDecrease" xlink:to="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnHeldToMaturitySecuritiesArisingDuringPeriodBeforeTax" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:label="loc_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:label="loc_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:to="loc_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:label="loc_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:to="loc_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax" xlink:label="loc_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:to="loc_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax" order="20" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesAllOtherArisingDuringPeriodNetOfTax" xlink:label="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesAllOtherArisingDuringPeriodNetOfTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:to="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesAllOtherArisingDuringPeriodNetOfTax" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:label="mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentNetOfTaxPeriodIncreaseDecrease" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:to="mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentNetOfTaxPeriodIncreaseDecrease" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OttiChargesRecognizedInNetIncomeNetOfTaxAmount" xlink:label="mtb_OttiChargesRecognizedInNetIncomeNetOfTaxAmount" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:to="mtb_OttiChargesRecognizedInNetIncomeNetOfTaxAmount" order="20" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesWithOttiArisingDuringPeriodNetOfTax" xlink:label="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesWithOttiArisingDuringPeriodNetOfTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:to="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesWithOttiArisingDuringPeriodNetOfTax" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeReclassificationAdjustmentTransferOfAfsSecuritiesToHtmUnrealizedHoldingLossesNetOfTax" xlink:label="mtb_OtherComprehensiveIncomeReclassificationAdjustmentTransferOfAfsSecuritiesToHtmUnrealizedHoldingLossesNetOfTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:to="mtb_OtherComprehensiveIncomeReclassificationAdjustmentTransferOfAfsSecuritiesToHtmUnrealizedHoldingLossesNetOfTax" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:label="loc_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:to="loc_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax" xlink:label="loc_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:to="loc_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax" order="80" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent" xlink:label="loc_OtherComprehensiveIncomeLossTaxPortionAttributableToParent" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesTax" xlink:label="loc_OtherComprehensiveIncomeAvailableForSaleSecuritiesTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossTaxPortionAttributableToParent" xlink:to="loc_OtherComprehensiveIncomeAvailableForSaleSecuritiesTax" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax" xlink:label="loc_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeAvailableForSaleSecuritiesTax" xlink:to="loc_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesAllOtherArisingDuringPeriodTax" xlink:label="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesAllOtherArisingDuringPeriodTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax" xlink:to="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesAllOtherArisingDuringPeriodTax" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax" xlink:label="loc_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax" xlink:to="loc_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax" order="40" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentTaxAmount" xlink:label="mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentTaxAmount" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeAvailableForSaleSecuritiesTax" xlink:to="mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentTaxAmount" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OttiChargesRecognizedInNetIncomeTaxesAmount" xlink:label="mtb_OttiChargesRecognizedInNetIncomeTaxesAmount" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentTaxAmount" xlink:to="mtb_OttiChargesRecognizedInNetIncomeTaxesAmount" order="20" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesWithOttiArisingDuringPeriodTax" xlink:label="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesWithOttiArisingDuringPeriodTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentTaxAmount" xlink:to="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnAvailableForSaleAfsInvestmentSecuritiesWithOttiArisingDuringPeriodTax" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeReclassificationAdjustmentTransferOfAfsSecuritiesToHtmUnrealizedHoldingLossesTax" xlink:label="mtb_OtherComprehensiveIncomeReclassificationAdjustmentTransferOfAfsSecuritiesToHtmUnrealizedHoldingLossesTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeAvailableForSaleSecuritiesTax" xlink:to="mtb_OtherComprehensiveIncomeReclassificationAdjustmentTransferOfAfsSecuritiesToHtmUnrealizedHoldingLossesTax" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTax" xlink:label="us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTax_2" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossTaxPortionAttributableToParent" xlink:to="us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTax_2" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansTax" xlink:label="loc_OtherComprehensiveIncomeDefinedBenefitPlansTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossTaxPortionAttributableToParent" xlink:to="loc_OtherComprehensiveIncomeDefinedBenefitPlansTax" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax" xlink:label="loc_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossTaxPortionAttributableToParent" xlink:to="loc_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentTaxAmount" xlink:label="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentTaxAmount" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeAvailableForSaleSecuritiesTax" xlink:to="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentTaxAmount" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiLossesTaxEffectRecognizedInEarnings" xlink:label="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiLossesTaxEffectRecognizedInEarnings" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentTaxAmount" xlink:to="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiLossesTaxEffectRecognizedInEarnings" order="60" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeReclassificationToIncomeOfUnrealizedHoldingLossesTax" xlink:label="mtb_OtherComprehensiveIncomeReclassificationToIncomeOfUnrealizedHoldingLossesTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentTaxAmount" xlink:to="mtb_OtherComprehensiveIncomeReclassificationToIncomeOfUnrealizedHoldingLossesTax" order="40" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnHeldToMaturitySecuritiesArisingDuringPeriodTax" xlink:label="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnHeldToMaturitySecuritiesArisingDuringPeriodTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentTaxAmount" xlink:to="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnHeldToMaturitySecuritiesArisingDuringPeriodTax" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedWithOttiInNetIncomeTax" xlink:label="mtb_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedWithOttiInNetIncomeTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentTaxAmount" xlink:to="mtb_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedWithOttiInNetIncomeTax" order="40" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:label="loc_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:to="loc_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:label="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentNetOfTaxPeriodIncreaseDecrease" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:to="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentNetOfTaxPeriodIncreaseDecrease" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiLossesNetOfTaxRecognizedInEarnings" xlink:label="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiLossesNetOfTaxRecognizedInEarnings" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:to="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiLossesNetOfTaxRecognizedInEarnings" order="60" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeReclassificationToIncomeOfUnrealizedHoldingLossesAfterTax" xlink:label="mtb_OtherComprehensiveIncomeReclassificationToIncomeOfUnrealizedHoldingLossesAfterTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:to="mtb_OtherComprehensiveIncomeReclassificationToIncomeOfUnrealizedHoldingLossesAfterTax" order="40" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnHeldToMaturitySecuritiesArisingDuringPeriodNetOfTax" xlink:label="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnHeldToMaturitySecuritiesArisingDuringPeriodNetOfTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:to="mtb_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnHeldToMaturitySecuritiesArisingDuringPeriodNetOfTax" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedWithOttiInNetIncomeNetOfTax" xlink:label="mtb_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedWithOttiInNetIncomeNetOfTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeAvailableForSaleSecuritiesWithOttiAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:to="mtb_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedWithOttiInNetIncomeNetOfTax" order="40" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_OtherComprehensiveIncomeReclassificationToIncomeOfUnrealizedHoldingLossesBeforeTax" xlink:label="mtb_OtherComprehensiveIncomeReclassificationToIncomeOfUnrealizedHoldingLossesBeforeTax" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_OtherComprehensiveIncomeHeldToMaturitySecuritiesWithOttiAdjustmentBeforeTaxPeriodIncreaseDecrease" xlink:to="mtb_OtherComprehensiveIncomeReclassificationToIncomeOfUnrealizedHoldingLossesBeforeTax" order="40" use="optional" weight="-1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/DerivativeFinancialInstrumentsDetails" xlink:title="0618 - Disclosure - Derivative financial instruments (Details)">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/DerivativeFinancialInstrumentsTables" xlink:title="0518 - Disclosure - Derivative financial instruments (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/InvestmentSecuritiesDetails" xlink:title="0603 - Disclosure - Investment securities (Details)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="loc_AvailableForSaleSecurities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1" xlink:label="loc_AvailableForSaleSecuritiesGrossUnrealizedLosses1" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AvailableForSaleSecurities" xlink:to="loc_AvailableForSaleSecuritiesGrossUnrealizedLosses1" order="60" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableforsaleSecuritiesGrossUnrealizedGain" xlink:label="loc_AvailableforsaleSecuritiesGrossUnrealizedGain" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AvailableForSaleSecurities" xlink:to="loc_AvailableforsaleSecuritiesGrossUnrealizedGain" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:label="loc_AvailableForSaleSecuritiesAmortizedCost" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AvailableForSaleSecurities" xlink:to="loc_AvailableForSaleSecuritiesAmortizedCost" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesFairValue" xlink:label="loc_HeldToMaturitySecuritiesFairValue" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesUnrecognizedHoldingLoss" xlink:label="loc_HeldToMaturitySecuritiesUnrecognizedHoldingLoss" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_HeldToMaturitySecuritiesFairValue" xlink:to="loc_HeldToMaturitySecuritiesUnrecognizedHoldingLoss" order="60" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldtomaturitySecuritiesUnrecognizedHoldingGain" xlink:label="loc_HeldtomaturitySecuritiesUnrecognizedHoldingGain" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_HeldToMaturitySecuritiesFairValue" xlink:to="loc_HeldtomaturitySecuritiesUnrecognizedHoldingGain" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecurities" xlink:label="loc_HeldToMaturitySecurities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_HeldToMaturitySecuritiesFairValue" xlink:to="loc_HeldToMaturitySecurities" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_InvestmentSecuritiesFairValue" xlink:label="mtb_InvestmentSecuritiesFairValue" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_InvestmentSecuritiesGrossUnrealizedLosses" xlink:label="mtb_InvestmentSecuritiesGrossUnrealizedLosses" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_InvestmentSecuritiesFairValue" xlink:to="mtb_InvestmentSecuritiesGrossUnrealizedLosses" order="60" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_InvestmentSecuritiesGrossUnrealizedGains" xlink:label="mtb_InvestmentSecuritiesGrossUnrealizedGains" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_InvestmentSecuritiesFairValue" xlink:to="mtb_InvestmentSecuritiesGrossUnrealizedGains" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_InvestmentSecuritiesAmortizedCost" xlink:label="mtb_InvestmentSecuritiesAmortizedCost" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_InvestmentSecuritiesFairValue" xlink:to="mtb_InvestmentSecuritiesAmortizedCost" order="20" use="optional" weight="1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/InvestmentSecuritiesTables" xlink:title="0503 - Disclosure - Investment securities (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/FairValueMeasurementsDetails" xlink:title="0620 - Disclosure - Fair value measurements (Details)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosure" xlink:label="loc_LiabilitiesFairValueDisclosure" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherLiabilitiesFairValueDisclosure" xlink:label="loc_OtherLiabilitiesFairValueDisclosure" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LiabilitiesFairValueDisclosure" xlink:to="loc_OtherLiabilitiesFairValueDisclosure" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TradingLiabilitiesFairValueDisclosure" xlink:label="loc_TradingLiabilitiesFairValueDisclosure" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LiabilitiesFairValueDisclosure" xlink:to="loc_TradingLiabilitiesFairValueDisclosure" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="loc_AssetsFairValueDisclosure" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAssetsFairValueDisclosure" xlink:label="loc_OtherAssetsFairValueDisclosure" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AssetsFairValueDisclosure" xlink:to="loc_OtherAssetsFairValueDisclosure" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansHeldForSaleFairValueDisclosure" xlink:label="loc_LoansHeldForSaleFairValueDisclosure" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AssetsFairValueDisclosure" xlink:to="loc_LoansHeldForSaleFairValueDisclosure" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InvestmentsFairValueDisclosure" xlink:label="loc_InvestmentsFairValueDisclosure" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AssetsFairValueDisclosure" xlink:to="loc_InvestmentsFairValueDisclosure" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TradingAccountAssetsFairValueDisclosure" xlink:label="loc_TradingAccountAssetsFairValueDisclosure" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AssetsFairValueDisclosure" xlink:to="loc_TradingAccountAssetsFairValueDisclosure" order="20" use="optional" weight="1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/FairValueMeasurementsTables" xlink:title="0520 - Disclosure - Fair value measurements (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/VariableInterestEntitiesAndAssetSecuritizationsDetails" xlink:title="0619 - Disclosure - Variable interest entities and asset securitizations (Details)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/VariableInterestEntitiesAndAssetSecuritizations" xlink:title="0219 - Disclosure - Variable interest entities and asset securitizations" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/SignificantAccountingPoliciesPloicies" xlink:title="0401 - Disclosure - Significant Accounting Policies (Policies)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetailsTextual" xlink:title="061211 - Disclosure - Pension plans and other postretirement benefits (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/InvestmentSecuritiesDetails1" xlink:title="06031 - Disclosure - Investment Securities (Details 1)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/InvestmentSecuritiesDetails2" xlink:title="06032 - Disclosure - Investment Securities (Details 2)">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/InvestmentSecuritiesDetails3" xlink:title="06033 - Disclosure - Investment Securities (Details 3)">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/InvestmentSecuritiesDetailsTextual" xlink:title="06037 - Disclosure - Investment Securities (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/ShareholdersEquity" xlink:title="0210 - Disclosure - Shareholders' equity" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/ShareholdersEquityTables" xlink:title="0510 - Disclosure - Shareholders' equity (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/ShareholdersEquityDetails" xlink:title="0610 - Disclosure - Shareholders' equity (Details)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/InvestmentSecuritiesDetails4" xlink:title="06034 - Disclosure - Investment Securities (Details 4)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost" xlink:label="loc_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateAmortizedCost" xlink:label="mtb_AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateAmortizedCost" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost" xlink:to="mtb_AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateAmortizedCost" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" xlink:label="loc_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateAmortizedCost" xlink:to="loc_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost" xlink:label="loc_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateAmortizedCost" xlink:to="loc_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost" order="40" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost" xlink:label="loc_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateAmortizedCost" xlink:to="loc_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost" order="60" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost" xlink:label="loc_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateAmortizedCost" xlink:to="loc_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost" order="80" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost" xlink:label="loc_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost" xlink:to="loc_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:label="loc_AvailableForSaleSecuritiesDebtSecurities" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateFairValue" xlink:label="mtb_AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateFairValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AvailableForSaleSecuritiesDebtSecurities" xlink:to="mtb_AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateFairValue" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="loc_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateFairValue" xlink:to="loc_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" xlink:label="loc_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateFairValue" xlink:to="loc_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" order="40" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" xlink:label="loc_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateFairValue" xlink:to="loc_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" order="60" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue" xlink:label="loc_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateFairValue" xlink:to="loc_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue" order="80" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue" xlink:label="loc_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AvailableForSaleSecuritiesDebtSecurities" xlink:to="loc_AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesFairValue" xlink:label="loc_HeldToMaturitySecuritiesDebtMaturitiesFairValue" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_HeldToMaturitySecuritiesDebtMaturitiesWithSingleMaturityDateFairValue" xlink:label="mtb_HeldToMaturitySecuritiesDebtMaturitiesWithSingleMaturityDateFairValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_HeldToMaturitySecuritiesDebtMaturitiesFairValue" xlink:to="mtb_HeldToMaturitySecuritiesDebtMaturitiesWithSingleMaturityDateFairValue" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="loc_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_HeldToMaturitySecuritiesDebtMaturitiesWithSingleMaturityDateFairValue" xlink:to="loc_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" xlink:label="loc_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_HeldToMaturitySecuritiesDebtMaturitiesWithSingleMaturityDateFairValue" xlink:to="loc_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" order="40" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" xlink:label="loc_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_HeldToMaturitySecuritiesDebtMaturitiesWithSingleMaturityDateFairValue" xlink:to="loc_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" order="60" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue" xlink:label="loc_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_HeldToMaturitySecuritiesDebtMaturitiesWithSingleMaturityDateFairValue" xlink:to="loc_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue" order="80" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue" xlink:label="loc_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_HeldToMaturitySecuritiesDebtMaturitiesFairValue" xlink:to="loc_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesNetCarryingAmount" xlink:label="loc_HeldToMaturitySecuritiesDebtMaturitiesNetCarryingAmount" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_HeldToMaturitySecuritiesDebtMaturitiesWithSingleMaturityDateNetCarryingAmount" xlink:label="mtb_HeldToMaturitySecuritiesDebtMaturitiesWithSingleMaturityDateNetCarryingAmount" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_HeldToMaturitySecuritiesDebtMaturitiesNetCarryingAmount" xlink:to="mtb_HeldToMaturitySecuritiesDebtMaturitiesWithSingleMaturityDateNetCarryingAmount" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount" xlink:label="loc_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_HeldToMaturitySecuritiesDebtMaturitiesWithSingleMaturityDateNetCarryingAmount" xlink:to="loc_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount" xlink:label="loc_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_HeldToMaturitySecuritiesDebtMaturitiesWithSingleMaturityDateNetCarryingAmount" xlink:to="loc_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount" order="40" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount" xlink:label="loc_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_HeldToMaturitySecuritiesDebtMaturitiesWithSingleMaturityDateNetCarryingAmount" xlink:to="loc_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount" order="60" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount" xlink:label="loc_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_HeldToMaturitySecuritiesDebtMaturitiesWithSingleMaturityDateNetCarryingAmount" xlink:to="loc_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount" order="80" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount" xlink:label="loc_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_HeldToMaturitySecuritiesDebtMaturitiesNetCarryingAmount" xlink:to="loc_HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount" order="40" use="optional" weight="1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/LoansAndLeasesAndAllowanceForCreditLosses" xlink:title="0204 - Disclosure - Loans and leases" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AcquisitionsDetails1" xlink:title="0602 - Disclosure - Acquisitions (Details)">
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_FairValueOfLoansAcquired" xlink:label="mtb_FairValueOfLoansAcquired" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_InterestComponentOfExpectedCashFlows" xlink:label="mtb_InterestComponentOfExpectedCashFlows" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_FairValueOfLoansAcquired" xlink:to="mtb_InterestComponentOfExpectedCashFlows" order="40" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsExpectedToBeCollectedAtAcquisition" xlink:label="loc_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsExpectedToBeCollectedAtAcquisition" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_FairValueOfLoansAcquired" xlink:to="loc_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsExpectedToBeCollectedAtAcquisition" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_ContractualCashFlowsNotExpectedToBeCollected" xlink:label="mtb_ContractualCashFlowsNotExpectedToBeCollected" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsExpectedToBeCollectedAtAcquisition" xlink:to="mtb_ContractualCashFlowsNotExpectedToBeCollected" order="40" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_ContractuallyRequiredPrincipalAndInterestAtAcquisition" xlink:label="mtb_ContractuallyRequiredPrincipalAndInterestAtAcquisition" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsExpectedToBeCollectedAtAcquisition" xlink:to="mtb_ContractuallyRequiredPrincipalAndInterestAtAcquisition" order="20" use="optional" weight="1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AcquisitionsDetails2" xlink:title="06022 - Disclosure - Acquisitions (Details 2)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AcquisitionsDetails3" xlink:title="06021 - Disclosure - Acquisitions (Details 1)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionCostOfAcquiredEntityPurchasePrice" xlink:label="loc_BusinessAcquisitionCostOfAcquiredEntityPurchasePrice" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionCostOfAcquiredEntityEquityInterestsIssuedAndIssuable" xlink:label="loc_BusinessAcquisitionCostOfAcquiredEntityEquityInterestsIssuedAndIssuable" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessAcquisitionCostOfAcquiredEntityPurchasePrice" xlink:to="loc_BusinessAcquisitionCostOfAcquiredEntityEquityInterestsIssuedAndIssuable" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionPurchasePriceAllocationAssetsAcquired" xlink:label="loc_BusinessAcquisitionPurchasePriceAllocationAssetsAcquired" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionPurchasePriceAllocationOtherNoncurrentAssets" xlink:label="loc_BusinessAcquisitionPurchasePriceAllocationOtherNoncurrentAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessAcquisitionPurchasePriceAllocationAssetsAcquired" xlink:to="loc_BusinessAcquisitionPurchasePriceAllocationOtherNoncurrentAssets" order="120" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionPurchasePriceAllocationAmortizableIntangibleAssets" xlink:label="loc_BusinessAcquisitionPurchasePriceAllocationAmortizableIntangibleAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessAcquisitionPurchasePriceAllocationAssetsAcquired" xlink:to="loc_BusinessAcquisitionPurchasePriceAllocationAmortizableIntangibleAssets" order="100" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionPurchasePriceAllocationCurrentAssetsReceivables" xlink:label="loc_BusinessAcquisitionPurchasePriceAllocationCurrentAssetsReceivables" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessAcquisitionPurchasePriceAllocationAssetsAcquired" xlink:to="loc_BusinessAcquisitionPurchasePriceAllocationCurrentAssetsReceivables" order="140" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionPurchasePriceAllocationCurrentAssetsMarketableSecurities" xlink:label="loc_BusinessAcquisitionPurchasePriceAllocationCurrentAssetsMarketableSecurities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessAcquisitionPurchasePriceAllocationAssetsAcquired" xlink:to="loc_BusinessAcquisitionPurchasePriceAllocationCurrentAssetsMarketableSecurities" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionPurchasePriceAllocationCurrentAssetsCashAndCashEquivalents" xlink:label="loc_BusinessAcquisitionPurchasePriceAllocationCurrentAssetsCashAndCashEquivalents" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessAcquisitionPurchasePriceAllocationAssetsAcquired" xlink:to="loc_BusinessAcquisitionPurchasePriceAllocationCurrentAssetsCashAndCashEquivalents" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAssumed" xlink:label="loc_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAssumed" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionPurchasePriceAllocationOtherNoncurrentLiabilities" xlink:label="loc_BusinessAcquisitionPurchasePriceAllocationOtherNoncurrentLiabilities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAssumed" xlink:to="loc_BusinessAcquisitionPurchasePriceAllocationOtherNoncurrentLiabilities" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionPurchasePriceAllocationNoncurrentLiabilitiesLongTermDebt" xlink:label="loc_BusinessAcquisitionPurchasePriceAllocationNoncurrentLiabilitiesLongTermDebt" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAssumed" xlink:to="loc_BusinessAcquisitionPurchasePriceAllocationNoncurrentLiabilitiesLongTermDebt" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesAccountsPayable" xlink:label="loc_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesAccountsPayable" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAssumed" xlink:to="loc_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesAccountsPayable" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeposits" xlink:label="mtb_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeposits" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAssumed" xlink:to="mtb_BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesDeposits" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_BusinessAcquisitionCostOfAcquiredEntityPreferredStockPurchased" xlink:label="mtb_BusinessAcquisitionCostOfAcquiredEntityPreferredStockPurchased" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessAcquisitionCostOfAcquiredEntityPurchasePrice" xlink:to="mtb_BusinessAcquisitionCostOfAcquiredEntityPreferredStockPurchased" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_BusinessAcquisitionPurchasePriceAllocationOfInterestBearingDeposits" xlink:label="mtb_BusinessAcquisitionPurchasePriceAllocationOfInterestBearingDeposits" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessAcquisitionPurchasePriceAllocationAssetsAcquired" xlink:to="mtb_BusinessAcquisitionPurchasePriceAllocationOfInterestBearingDeposits" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_BusinessAcquisitionPurchasePriceAllocationOfOtherShortTermInvestments" xlink:label="mtb_BusinessAcquisitionPurchasePriceAllocationOfOtherShortTermInvestments" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_BusinessAcquisitionPurchasePriceAllocationAssetsAcquired" xlink:to="mtb_BusinessAcquisitionPurchasePriceAllocationOfOtherShortTermInvestments" order="60" use="optional" weight="1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/ComprehensiveIncomeDetails1" xlink:title="06151 - Disclosure - Comprehensive income (Details 1)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/DerivativeFinancialInstrumentsDetails2" xlink:title="06182 - Disclosure - Derivative financial instruments (Details 2)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/DerivativeFinancialInstrumentsDetails1" xlink:title="06181 - Disclosure - Derivative financial instruments (Details 1)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/DerivativeFinancialInstrumentsDetailsTextual" xlink:title="06183 - Disclosure - Derivative financial instruments (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/FairValueMeasurementsDetails2" xlink:title="06202 - Disclosure - Fair value measurements (Details 2)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:label="loc_LoansAndLeasesReceivableNetReportedAmount" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowance" xlink:label="loc_LoansAndLeasesReceivableAllowance" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LoansAndLeasesReceivableNetReportedAmount" xlink:to="loc_LoansAndLeasesReceivableAllowance" order="20" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_LoansAndLeasesReceivableConsumerInstallmentRevolvingAndHomeEquity" xlink:label="mtb_LoansAndLeasesReceivableConsumerInstallmentRevolvingAndHomeEquity" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LoansAndLeasesReceivableNetReportedAmount" xlink:to="mtb_LoansAndLeasesReceivableConsumerInstallmentRevolvingAndHomeEquity" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableConsumerMortgage" xlink:label="loc_LoansAndLeasesReceivableConsumerMortgage" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LoansAndLeasesReceivableNetReportedAmount" xlink:to="loc_LoansAndLeasesReceivableConsumerMortgage" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansReceivableCommercialRealEstate" xlink:label="loc_LoansReceivableCommercialRealEstate" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LoansAndLeasesReceivableNetReportedAmount" xlink:to="loc_LoansReceivableCommercialRealEstate" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LoansAndLeasesReceivableCommercial" xlink:label="loc_LoansAndLeasesReceivableCommercial" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LoansAndLeasesReceivableNetReportedAmount" xlink:to="loc_LoansAndLeasesReceivableCommercial" order="100" use="optional" weight="1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/FairValueMeasurementsDetailsTextual" xlink:title="06203 - Disclosure - Fair value measurements (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/SegmentInformationDetails1" xlink:title="06221 - Disclosure - Segment information (Details 1)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/SegmentInformationDetailsTextual" xlink:title="06222 - Disclosure - Segment information (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/FairValueMeasurementsDetails1" xlink:title="06201 - Disclosure - Fair value measurements (Details 1)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AcquisitionsDetailsTextual" xlink:title="06024 - Disclosure - Acquisitions (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/SignificantAccountingPoliciesDetails" xlink:title="0601 - Disclosure - Significant Accounting Policies (Details)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/ParentCompanyFinancialStatements" xlink:title="0226 - Disclosure - Parent Company Financial Statements">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/ParentCompanyFinancialStatementsTables" xlink:title="0526 - Disclosure - Parent Company Financial Statements (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/ParentCompanyFinancialStatementsDetails" xlink:title="0626 - Disclosure - Parent Company Financial Statements (Details)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Assets" xlink:label="loc_Assets" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAssets" xlink:label="loc_OtherAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="loc_OtherAssets" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="loc_EquityMethodInvestments" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="loc_EquityMethodInvestments" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_InvestmentsInUnconsolidatedSubsidiaries" xlink:label="mtb_InvestmentsInUnconsolidatedSubsidiaries" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="mtb_InvestmentsInUnconsolidatedSubsidiaries" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_InvestmentsInConsolidatedOtherSubsidiaries" xlink:label="mtb_InvestmentsInConsolidatedOtherSubsidiaries" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="mtb_InvestmentsInConsolidatedOtherSubsidiaries" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_InvestmentsInConsolidatedBankingSubsidiaries" xlink:label="mtb_InvestmentsInConsolidatedBankingSubsidiaries" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="mtb_InvestmentsInConsolidatedBankingSubsidiaries" order="100" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_DueFromSubsidiaries" xlink:label="mtb_DueFromSubsidiaries" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="mtb_DueFromSubsidiaries" order="120" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Cash" xlink:label="loc_Cash" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Assets" xlink:to="loc_Cash" order="140" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_DueFromSubsidiariesMoneyMarketSavings" xlink:label="mtb_DueFromSubsidiariesMoneyMarketSavings" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_DueFromSubsidiaries" xlink:to="mtb_DueFromSubsidiariesMoneyMarketSavings" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_DueFromSubsidiariesIncomeTaxReceivable" xlink:label="mtb_DueFromSubsidiariesIncomeTaxReceivable" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_DueFromSubsidiaries" xlink:to="mtb_DueFromSubsidiariesIncomeTaxReceivable" order="20" use="optional" weight="1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/ParentCompanyFinancialStatementsDetails1" xlink:title="06261 - Disclosure - Parent Company Financial Statements (Details 1)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_NetIncomeLoss" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_EquityInUndistributedIncomeOfSubsidiaries" xlink:label="mtb_EquityInUndistributedIncomeOfSubsidiaries" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetIncomeLoss" xlink:to="mtb_EquityInUndistributedIncomeOfSubsidiaries" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesDividendOrInterestCreditedToIncome" xlink:label="loc_InvestmentsInAndAdvancesToAffiliatesDividendOrInterestCreditedToIncome" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_EquityInUndistributedIncomeOfSubsidiaries" xlink:to="loc_InvestmentsInAndAdvancesToAffiliatesDividendOrInterestCreditedToIncome" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_NetIncomeOfSubsidiaries" xlink:label="mtb_NetIncomeOfSubsidiaries" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_EquityInUndistributedIncomeOfSubsidiaries" xlink:to="mtb_NetIncomeOfSubsidiaries" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_IncomeLossBeforeEquityInUndistributedIncomeOfSubsidiaries" xlink:label="mtb_IncomeLossBeforeEquityInUndistributedIncomeOfSubsidiaries" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetIncomeLoss" xlink:to="mtb_IncomeLossBeforeEquityInUndistributedIncomeOfSubsidiaries" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_IncomeTaxExpenseBenefit" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_IncomeLossBeforeEquityInUndistributedIncomeOfSubsidiaries" xlink:to="loc_IncomeTaxExpenseBenefit" order="40" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_IncomeLossBeforeIncomeTaxesAndEquityInUndistributedIncomeOfSubsidiaries" xlink:label="mtb_IncomeLossBeforeIncomeTaxesAndEquityInUndistributedIncomeOfSubsidiaries" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_IncomeLossBeforeEquityInUndistributedIncomeOfSubsidiaries" xlink:to="mtb_IncomeLossBeforeIncomeTaxesAndEquityInUndistributedIncomeOfSubsidiaries" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_NetExpense" xlink:label="mtb_NetExpense" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_IncomeLossBeforeIncomeTaxesAndEquityInUndistributedIncomeOfSubsidiaries" xlink:to="mtb_NetExpense" order="40" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NoninterestExpense" xlink:label="loc_NoninterestExpense" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_NetExpense" xlink:to="loc_NoninterestExpense" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpenseLongTermDebt" xlink:label="loc_InterestExpenseLongTermDebt" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_NetExpense" xlink:to="loc_InterestExpenseLongTermDebt" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_NetIncome" xlink:label="mtb_NetIncome" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_IncomeLossBeforeIncomeTaxesAndEquityInUndistributedIncomeOfSubsidiaries" xlink:to="mtb_NetIncome" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherIncome" xlink:label="loc_OtherIncome" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_NetIncome" xlink:to="loc_OtherIncome" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_IncomeLossFromEquityMethodInvestments" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_NetIncome" xlink:to="loc_IncomeLossFromEquityMethodInvestments" order="60" use="optional" weight="1" priority="1" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_NetIncome" xlink:to="loc_InvestmentsInAndAdvancesToAffiliatesDividendOrInterestCreditedToIncome" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries" xlink:label="loc_CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="mtb_NetIncome" xlink:to="loc_CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries" order="40" use="optional" weight="-1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/ParentCompanyFinancialStatementsDetails2" xlink:title="06262 - Disclosure - Parent Company Financial Statements (Details 2)">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/OtherIncomeAndOtherExpenseDetails" xlink:title="0616 - Disclosure - Other income and other expense (Details)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/OtherIncomeAndOtherExpenseTables" xlink:title="0516 - Disclosure - Other income and other expense (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/OtherIncomeAndOtherExpense" xlink:title="0216 - Disclosure - Other income and other expense" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/CommitmentsAndContingenciesDetails1" xlink:title="06211 - Disclosure - Commitments and Contingencies (Details 1)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="loc_OperatingLeasesFutureMinimumPaymentsDue" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="loc_OperatingLeasesFutureMinimumPaymentsDueThereafter" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="loc_OperatingLeasesFutureMinimumPaymentsDueThereafter" order="120" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="loc_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="loc_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" order="100" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="loc_OperatingLeasesFutureMinimumPaymentsDueInFourYears" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="loc_OperatingLeasesFutureMinimumPaymentsDueInFourYears" order="80" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="loc_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="loc_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" order="60" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="loc_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="loc_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" order="40" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:label="loc_OperatingLeasesFutureMinimumPaymentsDueCurrent" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="loc_OperatingLeasesFutureMinimumPaymentsDueCurrent" order="20" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/CommitmentsAndContingenciesDetailsTextual" xlink:title="06212 - Disclosure - Commitments and Contingencies (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/InvestmentSecuritiesDetails5" xlink:title="06035 - Disclosure - Investment Securities (Details 5)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/InvestmentSecuritiesDetails6" xlink:title="06036 - Disclosure - Investment Securities (Details 6)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PremisesAndEquipment" xlink:title="0206 - Disclosure - Premises and equipment" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PremisesAndEquipmentDetails" xlink:title="0606 - Disclosure - Premises And Equipment (Details)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_PropertyPlantAndEquipmentNet" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_PropertyPlantAndEquipmentNet" xlink:to="loc_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" order="40" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_PropertyPlantAndEquipmentGross" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_PropertyPlantAndEquipmentNet" xlink:to="loc_PropertyPlantAndEquipmentGross" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FurnitureAndFixturesGross" xlink:label="loc_FurnitureAndFixturesGross" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_PropertyPlantAndEquipmentGross" xlink:to="loc_FurnitureAndFixturesGross" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LeaseholdImprovementsGross" xlink:label="loc_LeaseholdImprovementsGross" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_PropertyPlantAndEquipmentGross" xlink:to="loc_LeaseholdImprovementsGross" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_BuildingsAndImprovementsGross" xlink:label="loc_BuildingsAndImprovementsGross" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_PropertyPlantAndEquipmentGross" xlink:to="loc_BuildingsAndImprovementsGross" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Land" xlink:label="loc_Land" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_PropertyPlantAndEquipmentGross" xlink:to="loc_Land" order="20" use="optional" weight="1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/CapitalizedServicingAssets" xlink:title="0207 - Disclosure - Capitalized servicing assets" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/CapitalizedServicingAssetsTables" xlink:title="0507 - Disclosure - Capitalized servicing assets (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/CapitalizedServicingAssetsDetails" xlink:title="0607 - Disclosure - Capitalized servicing assets (Details)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/CapitalizedServicingAssetsDetails1" xlink:title="06071 - Disclosure - Capitalized servicing assets (Details 1)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PremisesAndEquipmentTables" xlink:title="0506 - Disclosure - Premises and equipment (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/CapitalizedServicingAssetsDetailsTextual" xlink:title="06072 - Disclosure - Capitalized servicing assets (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/GoodwillAndOtherIntangibleAssets" xlink:title="0208 - Disclosure - Goodwill and other intangible assets" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/GoodwillAndOtherIntangibleAssetsTables" xlink:title="0508 - Disclosure - Goodwill and other intangible assets (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/GoodwillAndOtherIntangibleAssetsDetails" xlink:title="0608 - Disclosure - Goodwill and Other Intangible Assets (Details)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_FiniteLivedIntangibleAssetsNet" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_FiniteLivedIntangibleAssetsAccumulatedAmortization" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_FiniteLivedIntangibleAssetsNet" xlink:to="loc_FiniteLivedIntangibleAssetsAccumulatedAmortization" order="40" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_FiniteLivedIntangibleAssetsGross" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_FiniteLivedIntangibleAssetsNet" xlink:to="loc_FiniteLivedIntangibleAssetsGross" order="20" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/GoodwillAndOtherIntangibleAssetsDetails1" xlink:title="06081 - Disclosure - Goodwill and Other Intangible Assets (Details 1)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpense" xlink:label="loc_FiniteLivedIntangibleAssetsFutureAmortizationExpense" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FutureAmortizationExpenseAfterYearFive" xlink:label="loc_FutureAmortizationExpenseAfterYearFive" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_FiniteLivedIntangibleAssetsFutureAmortizationExpense" xlink:to="loc_FutureAmortizationExpenseAfterYearFive" order="120" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FutureAmortizationExpenseYearFive" xlink:label="loc_FutureAmortizationExpenseYearFive" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_FiniteLivedIntangibleAssetsFutureAmortizationExpense" xlink:to="loc_FutureAmortizationExpenseYearFive" order="100" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FutureAmortizationExpenseYearFour" xlink:label="loc_FutureAmortizationExpenseYearFour" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_FiniteLivedIntangibleAssetsFutureAmortizationExpense" xlink:to="loc_FutureAmortizationExpenseYearFour" order="80" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FutureAmortizationExpenseYearThree" xlink:label="loc_FutureAmortizationExpenseYearThree" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_FiniteLivedIntangibleAssetsFutureAmortizationExpense" xlink:to="loc_FutureAmortizationExpenseYearThree" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FutureAmortizationExpenseYearTwo" xlink:label="loc_FutureAmortizationExpenseYearTwo" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_FiniteLivedIntangibleAssetsFutureAmortizationExpense" xlink:to="loc_FutureAmortizationExpenseYearTwo" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FutureAmortizationExpenseYearOne" xlink:label="loc_FutureAmortizationExpenseYearOne" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_FiniteLivedIntangibleAssetsFutureAmortizationExpense" xlink:to="loc_FutureAmortizationExpenseYearOne" order="20" use="optional" weight="1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/GoodwillAndOtherIntangibleAssetsDetails2" xlink:title="06082 - Disclosure - Goodwill and Other Intangible Assets (Details 2)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/GoodwillAndOtherIntangibleAssetsDetailsTextual" xlink:title="06083 - Disclosure - Goodwill and Other Intangible Assets (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails1" xlink:title="061201 - Disclosure - Pension plans and other postretirement benefits (Details 1)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails2" xlink:title="061202 - Disclosure - Pension plans and other postretirement benefits (Details 2)">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails3" xlink:title="061203 - Disclosure - Pension plans and other postretirement benefits (Details 3)">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails4" xlink:title="061204 - Disclosure - Pension plans and other postretirement benefits (Details 4)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails5" xlink:title="061205 - Disclosure - Pension plans and other postretirement benefits (Details 5)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails6" xlink:title="061206 - Disclosure - Pension plans and other postretirement benefits (Details 6)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails7" xlink:title="061207 - Disclosure - Pension plans and other postretirement benefits (Details 7)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails8" xlink:title="061208 - Disclosure - Pension plans and other postretirement benefits (Details 8)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails9" xlink:title="061209 - Disclosure - Pension plans and other postretirement benefits (Details 9)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/InternationalActivities" xlink:title="0217 - Disclosure - International activities" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/InternationalActivitiesDetails" xlink:title="0617 - Disclosure - International activities (Details)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/BorrowingsDetailsTextual" xlink:title="06094 - Disclosure - Borrowings (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/BorrowingsDetails1" xlink:title="06091 - Disclosure - Borrowings (Details 1)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/BorrowingsDetails2" xlink:title="06092 - Disclosure - Borrowings (Details 2)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/BorrowingsDetails3" xlink:title="06093 - Disclosure - Borrowings (Details 3)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_LongTermDebt" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:label="loc_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LongTermDebt" xlink:to="loc_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" order="120" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:label="loc_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LongTermDebt" xlink:to="loc_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" order="100" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:label="loc_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LongTermDebt" xlink:to="loc_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" order="80" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="loc_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LongTermDebt" xlink:to="loc_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" order="60" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="loc_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LongTermDebt" xlink:to="loc_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" order="40" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="loc_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LongTermDebt" xlink:to="loc_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" order="20" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/BorrowingsTables" xlink:title="0509 - Disclosure - Borrowings (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/EarningsPerShareDetails1" xlink:title="06141 - Disclosure - Earnings Per Share (Details 1)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/StockBasedCompensationPlans" xlink:title="0211 - Disclosure - Stock-based compensation plans" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/StockBasedCompensationPlansTables" xlink:title="0511 - Disclosure - Stock-based compensation plans (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/StockBasedCompensationPlansDetails" xlink:title="0611 - Disclosure - Stock-based compensation plans (Details)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/StockBasedCompensationPlansDetails1" xlink:title="06111 - Disclosure - Stock-based compensation plans (Details 1)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/StockBasedCompensationPlansDetailsTextual" xlink:title="06112 - Disclosure - Stock-based compensation plans (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/IncomeTaxes" xlink:title="0213 - Disclosure - Income taxes" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/IncomeTaxesTables" xlink:title="0513 - Disclosure - Income taxes (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/IncomeTaxesDetails" xlink:title="0613 - Disclosure - Income taxes (Details)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_IncomeTaxExpenseBenefit" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_DeferredIncomeTaxExpenseBenefit" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_IncomeTaxExpenseBenefit" xlink:to="loc_DeferredIncomeTaxExpenseBenefit" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:label="loc_CurrentIncomeTaxExpenseBenefit" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_IncomeTaxExpenseBenefit" xlink:to="loc_CurrentIncomeTaxExpenseBenefit" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:label="loc_DeferredStateAndLocalIncomeTaxExpenseBenefit" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredIncomeTaxExpenseBenefit" xlink:to="loc_DeferredStateAndLocalIncomeTaxExpenseBenefit" order="20" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:label="loc_DeferredFederalIncomeTaxExpenseBenefit" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredIncomeTaxExpenseBenefit" xlink:to="loc_DeferredFederalIncomeTaxExpenseBenefit" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:label="loc_CurrentFederalTaxExpenseBenefit" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_CurrentIncomeTaxExpenseBenefit" xlink:to="loc_CurrentFederalTaxExpenseBenefit" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:label="loc_CurrentStateAndLocalTaxExpenseBenefit" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_CurrentIncomeTaxExpenseBenefit" xlink:to="loc_CurrentStateAndLocalTaxExpenseBenefit" order="20" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/IncomeTaxesDetails1" xlink:title="06131 - Disclosure - Income taxes (Details 1)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_IncomeTaxExpenseBenefit" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxReconciliationOtherReconcilingItems" xlink:label="loc_IncomeTaxReconciliationOtherReconcilingItems" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_IncomeTaxExpenseBenefit" xlink:to="loc_IncomeTaxReconciliationOtherReconcilingItems" order="120" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxReconciliationTaxCredits" xlink:label="loc_IncomeTaxReconciliationTaxCredits" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_IncomeTaxExpenseBenefit" xlink:to="loc_IncomeTaxReconciliationTaxCredits" order="80" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:label="loc_IncomeTaxReconciliationStateAndLocalIncomeTaxes" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_IncomeTaxExpenseBenefit" xlink:to="loc_IncomeTaxReconciliationStateAndLocalIncomeTaxes" order="60" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxReconciliationTaxExemptIncome" xlink:label="loc_IncomeTaxReconciliationTaxExemptIncome" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_IncomeTaxExpenseBenefit" xlink:to="loc_IncomeTaxReconciliationTaxExemptIncome" order="40" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:label="loc_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_IncomeTaxExpenseBenefit" xlink:to="loc_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_IncomeTaxReconciliationNonTaxableGainOnAcquisition" xlink:label="mtb_IncomeTaxReconciliationNonTaxableGainOnAcquisition" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_IncomeTaxExpenseBenefit" xlink:to="mtb_IncomeTaxReconciliationNonTaxableGainOnAcquisition" order="100" use="optional" weight="1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/IncomeTaxesDetails2" xlink:title="06132 - Disclosure - Income taxes (Details 2)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:label="loc_DeferredTaxAssetsLiabilitiesNet" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:label="loc_DeferredTaxLiabilities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredTaxAssetsLiabilitiesNet" xlink:to="loc_DeferredTaxLiabilities" order="40" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxLiabilitiesOther" xlink:label="loc_DeferredTaxLiabilitiesOther" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredTaxLiabilities" xlink:to="loc_DeferredTaxLiabilitiesOther" order="80" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxLiabilitiesFinancingArrangements" xlink:label="loc_DeferredTaxLiabilitiesFinancingArrangements" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredTaxLiabilities" xlink:to="loc_DeferredTaxLiabilitiesFinancingArrangements" order="60" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxLiabilitiesMortgageServicingRights" xlink:label="loc_DeferredTaxLiabilitiesMortgageServicingRights" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredTaxLiabilities" xlink:to="loc_DeferredTaxLiabilitiesMortgageServicingRights" order="40" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxLiabilitiesLeasingArrangements" xlink:label="loc_DeferredTaxLiabilitiesLeasingArrangements" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredTaxLiabilities" xlink:to="loc_DeferredTaxLiabilitiesLeasingArrangements" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxAssetsGross" xlink:label="loc_DeferredTaxAssetsGross" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredTaxAssetsLiabilitiesNet" xlink:to="loc_DeferredTaxAssetsGross" order="20" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxAssetsOther" xlink:label="loc_DeferredTaxAssetsOther" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredTaxAssetsGross" xlink:to="loc_DeferredTaxAssetsOther" order="180" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_DeferredTaxAssetsDepreciationAndAmortization" xlink:label="mtb_DeferredTaxAssetsDepreciationAndAmortization" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredTaxAssetsGross" xlink:to="mtb_DeferredTaxAssetsDepreciationAndAmortization" order="160" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxAssetsUnrealizedLossesOnTradingSecurities" xlink:label="loc_DeferredTaxAssetsUnrealizedLossesOnTradingSecurities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredTaxAssetsGross" xlink:to="loc_DeferredTaxAssetsUnrealizedLossesOnTradingSecurities" order="140" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" xlink:label="loc_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredTaxAssetsGross" xlink:to="loc_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" order="120" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits" xlink:label="loc_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredTaxAssetsGross" xlink:to="loc_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits" order="100" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_DeferredTaxAssetsInterestOnLoans" xlink:label="mtb_DeferredTaxAssetsInterestOnLoans" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredTaxAssetsGross" xlink:to="mtb_DeferredTaxAssetsInterestOnLoans" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation" xlink:label="loc_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredTaxAssetsGross" xlink:to="loc_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation" order="60" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_DeferredTaxAssetsLossesOnLoansAndOtherAssets" xlink:label="mtb_DeferredTaxAssetsLossesOnLoansAndOtherAssets" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredTaxAssetsGross" xlink:to="mtb_DeferredTaxAssetsLossesOnLoansAndOtherAssets" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="mtb-20111231.xsd#mtb_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementAndOtherEmployeeBenefits" xlink:label="mtb_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementAndOtherEmployeeBenefits" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_DeferredTaxAssetsGross" xlink:to="mtb_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementAndOtherEmployeeBenefits" order="20" use="optional" weight="1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/IncomeTaxesDetails3" xlink:title="06133 - Disclosure - Income taxes (Details 3)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/IncomeTaxesDetailsTextual" xlink:title="06134 - Disclosure - Income taxes (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/ComprehensiveIncomeDetailsTextual" xlink:title="06152 - Disclosure - Comprehensive income (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/RegulatoryMatters" xlink:title="0223 - Disclosure - Regulatory Matters" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/RegulatoryMattersTables" xlink:title="0523 - Disclosure - Regulatory Matters (Tables)">
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/RegulatoryMattersDetails" xlink:title="0623 - Disclosure - Regulatory Matters (Details)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/RegulatoryMattersDetailsTextual" xlink:title="06231 - Disclosure - Regulatory Matters (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/RelationshipWithAcquiree" xlink:title="0224 - Disclosure - Relationship of M&amp;T and AIB" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/RelationshipWithAcquireeDetails" xlink:title="0624 - Disclosure - Relationship of M&amp;T and AIB (Details)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AllowanceForCreditLosses" xlink:title="0205 - Disclosure - Allowance for Credit Losses" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AllowanceForCreditLossesDetails" xlink:title="0605 - Disclosure - Allowance for Credit Losses (Details)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AllowanceForCreditLossesTables" xlink:title="0505 - Disclosure - Allowance For Credit Losses (Tables)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AllowanceForCreditLossesDetails1" xlink:title="06051 - Disclosure - Allowance for Credit Losses (Details 1)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AllowanceForCreditLossesDetails2" xlink:title="06052 - Disclosure - Allowance for Credit Losses (Details 2)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AllowanceForCreditLossesDetails3" xlink:title="06053 - Disclosure - Allowance for Credit Losses (Details 3)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AllowanceForCreditLossesDetails4" xlink:title="06054 - Disclosure - Allowance for Credit Losses (Details 4)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AllowanceForCreditLossesDetails5" xlink:title="06055 - Disclosure - Allowance for Credit Losses (Details 5)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AllowanceForCreditLossesDetails6" xlink:title="06056 - Disclosure - Allowance For Credit Losses (Details 6)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/AllowanceForCreditLossesDetailsTextual" xlink:title="06057 - Disclosure - Allowance for Credit Losses (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/PensionPlansAndOtherPostretirementBenefitsDetails10" xlink:title="061210 - Disclosure - Pension Plans and other Postretirement Benefits (Details 10)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/ParentCompanyFinancialStatementsDetailsTextual" xlink:title="06263 - Disclosure - Parent Company Financial Statements (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/LoansAndLeasesDetails" xlink:title="0604 - Disclosure - Loans and leases (Details)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/LoansAndLeasesDetails1" xlink:title="06041 - Disclosure - Loans and leases (Details 1)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/LoansAndLeasesDetails2" xlink:title="06042 - Disclosure - Loans and leases (Details 2)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/LoansAndLeasesDetails4" xlink:title="06044 - Disclosure - Loans and leases (Details 4)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/LoansAndLeasesDetails3" xlink:title="06043 - Disclosure - Loans and leases (Details 3)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/LoansAndLeasesDetails5" xlink:title="06045 - Disclosure - Loans and leases (Details 5)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/LoansAndLeasesDetails6" xlink:title="06046 - Disclosure - Loans and leases (Details 6)">
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsReceivable" xlink:label="loc_CapitalLeasesFutureMinimumPaymentsReceivable" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableDueThereafter" xlink:label="loc_CapitalLeasesFutureMinimumPaymentsReceivableDueThereafter" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_CapitalLeasesFutureMinimumPaymentsReceivable" xlink:to="loc_CapitalLeasesFutureMinimumPaymentsReceivableDueThereafter" order="120" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableInFiveYears" xlink:label="loc_CapitalLeasesFutureMinimumPaymentsReceivableInFiveYears" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_CapitalLeasesFutureMinimumPaymentsReceivable" xlink:to="loc_CapitalLeasesFutureMinimumPaymentsReceivableInFiveYears" order="100" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableInFourYears" xlink:label="loc_CapitalLeasesFutureMinimumPaymentsReceivableInFourYears" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_CapitalLeasesFutureMinimumPaymentsReceivable" xlink:to="loc_CapitalLeasesFutureMinimumPaymentsReceivableInFourYears" order="80" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableInThreeYears" xlink:label="loc_CapitalLeasesFutureMinimumPaymentsReceivableInThreeYears" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_CapitalLeasesFutureMinimumPaymentsReceivable" xlink:to="loc_CapitalLeasesFutureMinimumPaymentsReceivableInThreeYears" order="60" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableInTwoYears" xlink:label="loc_CapitalLeasesFutureMinimumPaymentsReceivableInTwoYears" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_CapitalLeasesFutureMinimumPaymentsReceivable" xlink:to="loc_CapitalLeasesFutureMinimumPaymentsReceivableInTwoYears" order="40" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableCurrent" xlink:label="loc_CapitalLeasesFutureMinimumPaymentsReceivableCurrent" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_CapitalLeasesFutureMinimumPaymentsReceivable" xlink:to="loc_CapitalLeasesFutureMinimumPaymentsReceivableCurrent" order="20" use="optional" weight="1" priority="1" />
  </calculationLink>
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/LoansAndLeasesDetailsTextual" xlink:title="06047 - Disclosure - Loans and leases (Details Textual)" />
  <calculationLink xlink:type="extended" xlink:role="http://mtb.com/role/LoansAndLeasesTables" xlink:title="0504 - Disclosure - Loans and leases (Tables)" />
</linkbase>
</XBRL>
