Exhibit 99.1

BMO Financial Group Reports Fourth Quarter and Fiscal 2024 Results

Fourth Quarter 2024 Earnings Release

BMO’s 2024 audited annual consolidated financial statements and accompanying Management Discussion and Analysis (MD&A) are available online at www.bmo.com/investorrelations and at www.sedarplus.ca.

Financial Results Highlights

Fourth Quarter 2024 compared with Fourth Quarter 2023:

Fiscal 2024 compared with Fiscal 2023:

Toronto, December 5, 2024 – For the fourth quarter ended October 31, 2024, BMO Financial Group recorded net income of $2,304 million or $2.94 per share on a reported basis, and net income of $1,542 million or $1.90 per share on an adjusted basis.

“In 2024, BMO delivered good pre-provision pre-tax earnings growth across all operating groups and we met our commitment to positive operating leverage in each of the last three quarters and for the full year. Our overall results were impacted by elevated provisions for credit losses, and we expect quarterly provisions to moderate through 2025 as the business environment improves,” said Darryl White, Chief Executive Officer, BMO Financial Group.

“We’re entering 2025 with a strong foundation and significant balance sheet capacity for growth. We grew customer deposits across our franchise by $61 billion, up 9% from last year. Our CET1 ratio strengthened meaningfully to 13.6%, creating capacity to support our clients and return excess capital to our shareholders. Our scale, investments in technology, talent and client solutions are driving strong loyalty and core customer growth, and we remain focused on helping customers navigate a complex economic and geopolitical environment. We are confident in the execution of our strategy to drive profitable growth and enhanced return on equity over the medium term.”

“At BMO, employee engagement and winning culture are critical enablers to sustained business performance and advancing our Purpose, to Boldly Grow the Good in business and life, and we’re proud to have been recognized as one of the Most Admired Corporate Cultures in Canada by Waterstone Human Capital in 2024, a testament to our focus on inclusiveness and empowerment,” concluded Mr. White.

Concurrent with the release of results, BMO announced a first quarter 2025 dividend of $1.59 per common share, an increase of $0.08 or 5% from the prior year, and an increase of $0.04 or 3% from the prior quarter. The quarterly dividend of $1.59 per common share is equivalent to an annual dividend of $6.36 per common share.

On December 5, 2024, we announced our intention to establish a NCIB for up to 20 million common shares, subject to the approval of the Office of the Superintendent of Financial Institutions (OSFI) and the Toronto Stock Exchange. Once approvals are obtained, the NCIB will permit us to purchase common shares for the purpose of cancellation. The timing and amount of purchases under the NCIB are subject to regulatory approvals and to management discretion, based on factors such as market conditions and capital levels.

Caution

The foregoing section contains forward-looking statements. Please refer to the Caution Regarding Forward-Looking Statements.

Note: All ratios and percentage changes in this document are based on unrounded numbers.

Fourth Quarter 2024 Performance Review

Adjusted results and ratios in this section are on a non-GAAP basis. Refer to the Non-GAAP and Other Financial Measures section for further information on adjusting items. The order in which the impact on net income is discussed in this section follows the order of revenue, expenses and provision for credit losses, regardless of their relative impact.

Canadian P&C

Reported net income was $750 million, a decrease of $172 million or 18% from the prior year, and adjusted net income was $765 million, a decrease of $161 million or 17%. Results reflected a 5% increase in revenue, driven by higher net interest income due to balance growth, with a 6% increase in average loans and 10% increase in average deposits, partially offset by lower non-interest revenue, higher expenses and higher provisions for credit losses.

U.S. P&C

Reported net income was $256 million, a decrease of $335 million or 57% from the prior year, and adjusted net income was $326 million, a decrease of $344 million or 51%.

On a U.S. dollar basis, reported net income was $191 million, a decrease of $242 million or 56% from the prior year, and adjusted net income, which excludes amortization of acquisition-related intangible assets, was $242 million, a decrease of $248 million or 51%. Results reflected a 1% decrease in revenue primarily due to lower net interest margins, lower expenses primarily reflecting realized cost synergies and higher provisions for credit losses, primarily in Commercial Banking.

BMO Wealth Management

Reported net income was $326 million, a decrease of $25 million or 7% from the prior year, and adjusted net income was $328 million, a decrease of $24 million or 7%. Wealth and Asset Management reported net income was $273 million, an increase of $71 million or 35%, reflecting higher revenue due to growth in client assets, including stronger global markets, higher expenses and higher provisions for credit losses. Insurance net income was $53 million, a decrease of $96 million from the prior year, primarily due to changes in portfolio positioning during the transition to IFRS 17.

BMO Capital Markets

Reported net income was $251 million, a decrease of $221 million or 47% from the prior year, and adjusted net income was $270 million, a decrease of $205 million or 43%. Results reflected lower revenue, primarily in Investment and Corporate Banking, higher expenses and higher provisions for credit losses.

Corporate Services

Reported net income was $721 million, compared with reported net loss of $626 million in the prior year, and adjusted net loss was $147 million, compared with adjusted net loss of $180 million. Reported net income increased, primarily due to the reversal of a fiscal 2022 legal provision related to a lawsuit associated with a predecessor bank, M&I Marshall and Ilsley Bank, and lower acquisition and integration costs. Adjusted net loss was lower due to lower revenue, more than offset by lower expenses.

Capital

BMO’s Common Equity Tier 1 (CET1) Ratio was 13.6% as at October 31, 2024, an increase from 13.0% at the end of the third quarter of fiscal 2024, primarily due to the impact of the reversal of the fiscal 2022 legal provision associated with a predecessor bank, M&I Marshall and Ilsley Bank.

Regulatory Filings

BMO’s continuous disclosure materials, including interim filings, annual Management’s Discussion and Analysis and audited annual consolidated financial statements, Annual Information Form and Notice of Annual Meeting of Shareholders and Proxy Circular, are available on our website at www.bmo.com/investorrelations, on the Canadian Securities Administrators’ website at www.sedarplus.ca, and on the EDGAR section of the U.S. Securities and Exchange Commission’s website at www.sec.gov. Information contained in or otherwise accessible through our website (www.bmo.com), or any third-party websites mentioned herein, does not form part of this document.

Bank of Montreal uses a unified branding approach that links all of the organization’s member companies. Bank of Montreal, together with its subsidiaries, is known as BMO Financial Group. In this document, the names BMO and BMO Financial Group, as well as the words “bank”, “we” and “our”, mean Bank of Montreal, together with its subsidiaries.

Financial Review

Management’s Discussion and Analysis (MD&A) commentary is as at December 4, 2024 for the year ended October 31, 2024. The material that precedes this section comprises part of this MD&A. The MD&A should be read in conjunction with the unaudited interim consolidated financial statements for the period ended October 31, 2024, included in this document, as well as the audited annual consolidated financial statements for the year ended October 31, 2024, and the 2024 annual MD&A, contained in BMO’s 2024 Annual Report.

BMO’s 2024 Annual Report includes a comprehensive discussion of its businesses, strategies and objectives, and can be accessed on our website at www.bmo.com/investorrelations. Readers are also encouraged to visit the site to view other quarterly financial information.

Table of Contents

Bank of Montreal’s management, under the supervision of the Chief Executive Officer and the Chief Financial Officer, has evaluated the effectiveness, as at October 31, 2024, of Bank of Montreal’s disclosure controls and procedures (as defined in the rules of the U.S. Securities and Exchange Commission and the Canadian Securities Administrators) and has concluded that such disclosure controls and procedures are effective.

There were no changes in our internal control over financial reporting during the quarter ended October 31, 2024, which materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Because of inherent limitations, disclosure controls and procedures and internal control over financial reporting can provide only reasonable assurance and may not prevent or detect misstatements.

As in prior quarters, Bank of Montreal’s Audit and Conduct Review Committee reviewed this document and Bank of Montreal’s Board of Directors approved the document prior to its release.

Caution Regarding Forward-Looking Statements

Bank of Montreal’s public communications often include written or oral forward-looking statements. Statements of this type are included in this document and may be included in other filings with Canadian securities regulators or the U.S. Securities and Exchange Commission, or in other communications. All such statements are made pursuant to the “safe harbor” provisions of, and are intended to be forward-looking statements under, the United States Private Securities Litigation Reform Act of 1995 and any applicable Canadian securities legislation. Forward-looking statements in this document may include, but are not limited to: statements with respect to our objectives and priorities for fiscal 2025 and beyond; our strategies or future actions; our targets and commitments (including with respect to net zero emissions); expectations for our financial condition, capital position, the regulatory environment in which we operate, the results of, or outlook for, our operations or the Canadian, U.S. and international economies; and include statements made by our management. Forward-looking statements are typically identified by words such as “will”, “would”, “should”, “believe”, “expect”, “anticipate”, “project”, “intend”, “estimate”, “plan”, “goal”, “commit”, “target”, “may”, “might”, “schedule”, “forecast”, “outlook”, “timeline”, “suggest”, “seek” and “could” or negative or grammatical variations thereof.

By their nature, forward-looking statements require us to make assumptions and are subject to inherent risks and uncertainties, both general and specific in nature. There is significant risk that predictions, forecasts, conclusions or projections will not prove to be accurate, that our assumptions may not be correct, and that actual results may differ materially from such predictions, forecasts, conclusions or projections. We caution readers of this document not to place undue reliance on our forward-looking statements, as a number of factors – many of which are beyond our control and the effects of which can be difficult to predict – could cause actual future results, conditions, actions or events to differ materially from the targets, expectations, estimates or intentions expressed in the forward-looking statements.

The future outcomes that relate to forward-looking statements may be influenced by many factors, including, but not limited to: general economic and market conditions in the countries in which we operate, including labour challenges and changes in foreign exchange and interest rates; changes to our credit ratings; cyber and information security, including the threat of data breaches, hacking, identity theft and corporate espionage, as well as the possibility of denial of service resulting from efforts targeted at causing system failure and service disruption; technology resilience, innovation and competition; failure of third parties to comply with their obligations to us; political conditions, including changes relating to, or affecting, economic or trade matters; disruptions of global supply chains; environmental and social risk, including climate change; the Canadian housing market and consumer leverage; inflationary pressures; changes in laws, including tax legislation and interpretation, or in supervisory expectations or requirements, including capital, interest rate and liquidity requirements and guidance, and the effect of such changes on funding costs and capital requirements; changes in monetary, fiscal or economic policy; weak, volatile or illiquid capital or credit markets; the level of competition in the geographic and business areas in which we operate; exposure to, and the resolution of, significant litigation or regulatory matters, the appeal of favourable outcomes and our ability to successfully appeal adverse outcomes of such matters and the timing, determination and recovery of amounts related to such matters; the accuracy and completeness of the information we obtain with respect to our customers and counterparties; our ability to execute our strategic plans, complete proposed acquisitions or dispositions and integrate acquisitions, including obtaining regulatory approvals, and realize any anticipated benefits from such plans and transactions; critical accounting estimates and judgments, and the effects of changes in accounting standards, rules and interpretations on these estimates; operational and infrastructure risks, including with respect to reliance on third parties; global capital markets activities; the emergence or continuation of widespread health emergencies or pandemics, and their impact on local, national or international economies, as well as their heightening of certain risks that may affect our future results; the possible effects on our business of war or terrorist activities; natural disasters, such as earthquakes or flooding, and disruptions to public infrastructure, such as transportation, communications, power or water supply; and our ability to anticipate and effectively manage risks arising from all of the foregoing factors.

We caution that the foregoing list is not exhaustive of all possible factors. Other factors and risks could adversely affect our results. For more information, please refer to the discussion in the Risks That May Affect Future Results section, and the sections related to credit and counterparty, market, insurance, liquidity and funding, operational non-financial, legal and regulatory, strategic, environmental and social, and reputation risk, in the Enterprise-Wide Risk Management section of BMO’s 2024 Annual MD&A, and the Risk Management section in this document, all of which outline certain key factors and risks that may affect our future results. Investors and others should carefully consider these factors and risks, as well as other uncertainties and potential events, and the inherent uncertainty of forward-looking statements. We do not undertake to update any forward-looking statements, whether written or oral, that may be made from time to time by the organization or on its behalf, except as required by law. The forward-looking information contained in this document is presented for the purpose of assisting shareholders and analysts in understanding our financial position as at and for the periods ended on the dates presented, as well as our strategic priorities and objectives, and may not be appropriate for other purposes.

Material economic assumptions underlying the forward-looking statements contained in this document include those set out in the Economic Developments and Outlook section of BMO’s 2024 Annual MD&A, as well as in the Allowance for Credit Losses section of BMO’s 2024 Annual MD&A. Assumptions about the performance of the Canadian and U.S. economies, as well as overall market conditions and their combined effect on our business, are material factors we consider when determining our strategic priorities, objectives and expectations for our business. In determining our expectations for economic growth, we primarily consider historical economic data, past relationships between economic and financial variables, changes in government policies, and the risks to the domestic and global economy.

Financial Highlights

TABLE 1

Certain comparative figures have been reclassified for changes in accounting policy.

Non-GAAP and Other Financial Measures

Results and measures in this document are presented on a generally accepted accounting principles (GAAP) basis. Unless otherwise indicated, all amounts are in Canadian dollars and have been derived from our audited annual consolidated financial statements, prepared in accordance with International Financial Reporting Standards (IFRS), as issued by the International Accounting Standards Board. References to GAAP mean IFRS. We use a number of financial measures to assess our performance, as well as the performance of our operating segments, including amounts, measures and ratios that are presented on a non-GAAP basis, as described below. We believe that these non-GAAP amounts, measures and ratios, read together with our GAAP results, provide readers with a better understanding of how management assesses results.

Non-GAAP amounts, measures and ratios do not have standardized meanings under GAAP. They are unlikely to be comparable to similar measures presented by other companies and should not be viewed in isolation from, or as a substitute for, GAAP results.

Certain information contained in BMO’s 2024 Annual Management’s Discussion and Analysis (MD&A) as at December 4, 2024 for the period ended October 31, 2024 is incorporated by reference into this document. For further information regarding the composition of our supplementary financial measures, refer to the Glossary of Financial Terms section of BMO’s 2024 Annual MD&A, which is available online at www.bmo.com/investorrelations and at www.sedarplus.ca.

Our non-GAAP measures broadly fall into the following categories:

Adjusted measures and ratios

Management considers both reported and adjusted results and measures to be useful in assessing underlying ongoing business performance. Adjusted results and measures remove certain specified items from revenue, non-interest expense, provision for credit losses and income taxes, as detailed in the following table. Adjusted results and measures presented in this document are non-GAAP. Presenting results on both a reported basis and an adjusted basis permits readers to assess the impact of certain items on results for the periods presented, and to better assess results excluding those items that may not be reflective of ongoing business performance. As such, the presentation may facilitate readers’ analysis of trends. Except as otherwise noted, management’s discussion of changes in reported results in this document applies equally to changes in the corresponding adjusted results.

Tangible common equity and return on tangible common equity

Tangible common equity is calculated as common shareholders’ equity, less goodwill and acquisition-related intangible assets, net of related deferred tax liabilities. Return on tangible common equity (ROTCE) is calculated as net income available to common shareholders, adjusted for the amortization of acquisition-related intangible assets, as a percentage of average tangible common equity. ROTCE is commonly used in the North American banking industry and is meaningful because it measures the performance of businesses consistently, whether they were acquired or developed organically.

Measures net of insurance claims, commissions and changes in policy benefit liabilities

For periods prior to November 1, 2022, we presented adjusted revenue on a basis net of insurance claims, commissions and changes in policy benefit liabilities (CCPB), and our efficiency ratio and operating leverage were calculated on a similar basis. Beginning the first quarter of fiscal 2023, we no longer report CCPB, given the adoption and retrospective application of IFRS 17, Insurance Contracts (IFRS 17). For periods prior to November 1, 2022, adjusted operating leverage was calculated based on revenue, net of CCPB. Measures and ratios presented on a basis net of CCPB are non-GAAP amounts. For more information, refer to the Insurance Claims, Commissions and Changes in Policy Benefit Liabilities section of the 2023 Annual MD&A.

Caution

This Non-GAAP and Other Financial Measures section contains forward-looking statements. Please refer to the Caution Regarding Forward-Looking Statements.

Non-GAAP and Other Financial Measures

TABLE 2

Adjusted results exclude the following:

Certain comparative figures have been reclassified for changes in accounting policy.

For further information refer to the Non-GAAP and Other Financial Measures section and the Accounting Matters and Disclosure and Internal Control section of BMO’s 2024 Annual Report.

Summary of Reported and Adjusted Results by Operating Segment

TABLE 3

Certain comparative figures have been reclassified to conform with the current year’s presentation and for changes in accounting policy.

Return on Equity and Return on Tangible Common Equity

TABLE 4

Certain comparative figures have been reclassified for changes in accounting policy.

Return on Equity by Operating Segment (1)

TABLE 5

na – not applicable

Certain comparative figures have been reclassified to conform with the current year’s presentation and for changes in accounting policy.

Capital is allocated to the operating segments based on the amount of regulatory capital required to support business activities. Effective the first quarter of fiscal 2024, our capital allocation rate increased to 11.5% of risk weighted assets, compared with 11.0% in fiscal 2023, to reflect increased regulatory capital requirements. Unallocated capital is reported in Corporate Services. Capital allocation methodologies are reviewed at least annually.

Foreign Exchange

TABLE 6

Adjusted results in this table are on a non-GAAP basis and are discussed in the Non-GAAP and Other Financial Measures section.

The table above indicates the relevant average Canadian/U.S. dollar exchange rates and the impact of changes in those rates on BMO’s U.S. segment reported and adjusted results.

The Canadian dollar equivalents of BMO’s U.S. segment results that are denominated in U.S. dollars decreased in the fourth quarter of fiscal 2024, relative to the third quarter of fiscal 2024 and the fourth quarter of fiscal 2023, due to changes in the Canadian/U.S. dollar exchange rate. References in this document to the impact of the U.S. dollar do not include U.S. dollar-denominated amounts recorded outside of BMO’s U.S. segment.

Economically, our U.S. dollar income stream was not hedged against the risk of changes in foreign exchange rates during fiscal 2024 and fiscal 2023. Changes in exchange rates will affect future results measured in Canadian dollars, and the impact on those results is a function of the periods in which revenue, expenses and provisions for (or recoveries of) credit losses and income taxes arise.

Refer to the Enterprise-Wide Capital Management section of BMO’s 2024 Annual MD&A for a discussion of the impact that changes in foreign exchange rates can have on BMO’s capital position.

Net Income

Q4 2024 vs. Q4 2023

Reported net income was $2,304 million, an increase of $594 million or 35% from the prior year, and adjusted net income was $1,542 million, a decrease of $701 million or 31%. Reported earnings per share (EPS) was $2.94 an increase of $0.75 from the prior year, and adjusted EPS was $1.90, a decrease of $1.03.

Adjusted results in the current quarter, the prior year and prior quarter excluded the following items:

Reported net income increased from the prior year, primarily due to the items noted above, which in aggregate increased net income by $762 million in the current year, compared with a reduction of $533 million in the prior year. The decrease in adjusted net income reflected a higher provision for credit losses, partially offset by lower expenses, with revenue relatively unchanged from the prior year. Reported and adjusted net income decreased across all operating segments. Corporate Services recorded net income on a reported basis, compared with a net loss in the prior year, and a lower net loss on an adjusted basis.

Q4 2024 vs. Q3 2024

Reported net income increased $439 million or 24% from the prior quarter, and adjusted net income decreased $439 million or 22%. Reported EPS increased $0.46 from the prior quarter, and adjusted EPS decreased $0.74, including the impact of higher dividends on preferred shares and distributions on other equity instruments.

Reported net income increased, primarily due to the adjusted items noted above. The decrease in adjusted net income reflected a higher provision for credit losses and higher expenses, partially offset by higher revenue. Reported and adjusted net income decreased across all operating segments. Corporate Services recorded net income on a reported basis, compared with a net loss in the prior quarter, and a lower net loss on an adjusted basis.

For further information on non-GAAP amounts, measures and ratios in this Net Income section, refer to the Non-GAAP and Other Financial Measures section.

Revenue

Effective the first quarter of fiscal 2024, the bank adopted IFRS 17, Insurance Contracts (IFRS 17) and retrospectively applied it to fiscal 2023 results. Insurance results are now presented in non-interest revenue under insurance service results and insurance investment results. Fiscal 2023 results may not be fully representative of our future earnings profile, as we were not managing our insurance portfolio under the new standard. For additional information, refer to Note 1 of the audited annual consolidated financial statements in BMO’s 2024 Annual Report.

Q4 2024 vs. Q4 2023

Reported revenue was $8,957 million, an increase of $638 million or 8% from the prior year, due to the reversal of accrued interest on the fiscal 2022 legal provision in the current year. Adjusted revenue was $8,368 million, relatively unchanged from the prior year, with higher non-interest revenue partially offset by lower net interest income. Revenue increased in Canadian P&C and BMO Wealth Management, and decreased in Corporate Services, BMO Capital Markets and U.S. P&C.

Reported net interest income was $5,438 million, an increase of $497 million or 10% from the prior year, and adjusted net interest income was $4,849 million, a decrease of $106 million or 2% from the prior year. The increase in reported net interest income primarily reflected the reversal of accrued interest on the legal provision in the current year. Adjusted net interest income decreased, primarily due to lower trading-related net interest income and lower net interest income in Corporate Services due to lower net accretion of purchase accounting fair value marks, partially offset by higher net interest income in Canadian P&C and higher non-trading interest income in BMO Capital Markets. Trading-related net interest loss was $55 million, compared with net interest income of $213 million in the prior year, and was offset in trading non-interest revenue.

BMO’s overall reported net interest margin of 1.70% increased 3 basis points from the prior year. Adjusted net interest margin, excluding trading-related net interest income, trading and insurance assets, was 1.90%, unchanged from the prior year, with higher margins in BMO Capital Markets and volume growth in Canadian P&C offset by lower net interest income in Corporate Services and lower margins in U.S. P&C and BMO Wealth Management. The impact of higher interest rates on deposit pricing and deposit mix was largely offset by the reinvestment of earning assets at higher yields.

Reported and adjusted non-interest revenue was $3,519 million, an increase of $141 million or 4% from the prior year, primarily driven by higher trading revenue, investment management and custodial fee revenue and mutual fund fee revenue, partially offset by lower insurance-related revenue reflecting changes in portfolio positioning during the transition to IFRS 17, the impact of mark-downs on the held-for-sale loan portfolio and lower lending fee revenue, largely offset in net interest income reflecting the transition of bankers’ acceptances exposures to loans, and lower card fee revenue.

Q4 2024 vs. Q3 2024

Reported revenue increased $765 million or 9% from the prior quarter, and adjusted revenue increased $162 million or 2%.

Reported net interest income increased $644 million or 13% from the prior quarter, primarily driven by the reversal of accrued interest on the legal provision. On an adjusted basis, net interest income increased $41 million or 1%, driven by higher net interest income in Corporate Services and Canadian P&C, and higher non-trading interest income in BMO Capital Markets, partially offset by lower trading-related net interest income. Trading-related net interest income decreased $137 million from the prior quarter, largely offset in trading non-interest revenue.

BMO’s overall reported net interest margin increased 19 basis points from the prior quarter. Adjusted net interest margin, excluding trading-related net interest income, and trading and insurance assets, increased 7 basis points, primarily due to higher net interest income and lower low-yielding assets in both Corporate Services and BMO Capital Markets.

Reported and adjusted non-interest revenue increased $121 million or 4% from the prior quarter. The increase was primarily driven by higher trading revenue and underwriting and advisory fee revenue, partially offset by lower card and lending fee revenue. Compared with the prior quarter, insurance investment results increased primarily due to changes in assumptions, with the increase largely offset in insurance service results.

For further information on non-GAAP amounts, measures and ratios, and results presented on a net revenue basis in this Revenue section, refer to the Non-GAAP and Other Financial Measures section. The foregoing sections contain forward-looking statements. Please refer to the Caution Regarding Forward-Looking Statements.

Change in Net Interest Income, Average Earning Assets and Net Interest Margin (1)

TABLE 7