“Can Bank of Montreal build a top-tier U.S. national bank on the back of Chicago's Harris franchise and successive Midwest/West acquisitions?”
BMO Harris Bank is the U.S. commercial and retail bank subsidiary of Bank of Montreal, built up through decades of acquisitions of Chicago-area and Midwest banks — culminating in the 2011 Marshall & Ilsley deal and the 2023 Bank of the West acquisition, which extended its footprint into the U.S. West and made it the 15th-largest U.S. bank by assets. In 2024 the U.S. entity was rebranded from 'BMO Harris' to simply 'BMO' (legal name BMO Bank, N.A.), consolidating the parent group's global identity. As a full-service national bank it operates its own charter, card issuance, and payments infrastructure rather than relying on BaaS providers.
BMO Harris Bank discloses BMO Bank, N.A. (in-house) as its banking provider, according to the Embedded Finance Index 2026.
BMO Harris Bank does not disclose a bank charter of its own; its banking services are provided through BMO Bank, N.A. (in-house).
BMO Harris Bank's cards are issued through BMO Bank, N.A. (in-house) on the Mastercard network.
BMO Harris Bank's lending and capital products are provided by BMO Bank, N.A. (in-house) and BMO Commercial Bank (in-house).
BMO Harris Bank uses BMO Global Pay (in-house) for FX and cross-border payouts.
BMO Harris Bank's embedded insurance is provided by New Hampshire Insurance Company (AIG), Virginia Surety Company and Sedgwick Claims Management Services.
BMO Harris Bank's investing and wealth products are powered by BMO Wealth Management (in-house), BMO Family Office (in-house), Delaware Trust Company (in-house) and Stoker Ostler (in-house).
The Embedded Finance Index 2026 maps 8 layers in BMO Harris Bank's stack: Banking / BaaS (BMO Bank, N.A. (in-house)); Card issuing (BMO Bank, N.A. (in-house)); Card network (Mastercard); Lending (BMO Bank, N.A. (in-house) and BMO Commercial Bank (in-house)); Insurance (New Hampshire Insurance Company (AIG), Virginia Surety Company and Sedgwick Claims Management Services); FX & payouts (BMO Global Pay (in-house)); Investing (BMO Wealth Management (in-house), BMO Family Office (in-house), Delaware Trust Company (in-house) and Stoker Ostler (in-house)); Treasury (BMO Commercial Bank (in-house)).
BMO Harris Bank was founded by Norman Wait Harris and is founded in 1882, headquartered in Chicago, Illinois, USA.
BMO Harris Bank's acquisitions include Bank of the West (2023), Marshall & Ilsley (2011) and Suburban Bancorp (1994).
Get a read on where your own stack stands against BMO Harris Bank and the rest of its category — what they built versus bought, which providers they use, and where the gaps in your own strategy and competitive set actually are.