Investor Presentaiton

Strong balance sheet and capital position • CET1 Ratio of 13.4%, up 40bps Q/Q; Total Capital Ratio of 17.4% • Sound leverage and liquidity ratios Leverage Ratio 5.0% -Liquidity Coverage Ratio 125% CET1 Ratio³ Credit Ratings Moody's S&P DBRS Fitch Long term deposits / legacy senior debt¹ Aa2 A+ AA AA Senior debt² Outlook +3 bps +48 bps -2 bps 13.0% Q2'21 Internal capital generation Lower source currency RWA Other A2 A- AA (low) AA- Stable Stable Stable Negative 13.4% 4.40% 9% Current OSFI expectation 1.00% Domestic Stability Buffer4 1.00% D-SIB Surcharge 2.50% Capital Conservation Buffer 4.50% Minimum CET1 Q3'21 1 Long term deposits / legacy senior debt includes: (a) Senior debt issued prior to September 23, 2018; and (b) Senior debt issued on or after September 23, 2018 which is excluded from the Bank Recapitalization (Bail-In) Regime 2 Subject to conversion under the Bank Recapitalization (Bail-In) Regime 3 Chart is not to scale 4 On June 17, 2021, OSFI announced that the Domestic Stability Buffer will increase to 2.5% from 1.0%, this change will take effect on October 31, 2021 BMO Financial Group Investor Presentation • October 2021 16

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