Mercury's deposit-driven revenue model
Mercury
Mercury’s core economic engine is not checking accounts, it is concentrated startup cash balances. The product is free because the real money starts after a customer raises capital, parks millions in an operating account, and Mercury sweeps those deposits to partner banks that share the yield back. That makes Mercury closer to a software distribution layer for bank balance sheets than to a traditional lender, and it explains why deposit growth has been so powerful for revenue.
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The revenue stack has historically included four lines, deposit revenue share, card interchange, wire and FX fees, and venture debt participation. In newer reporting, the business is framed around three primary streams because deposit yield dominates, while fee and software lines are still smaller contributors.
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Mercury works especially well with venture backed startups because those companies often raise cash long before they spend it. A startup that closes a $10M round may keep most of that money idle for months, which creates a large, low cost deposit base that Mercury can monetize without taking lending risk itself.
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This is the main difference versus Ramp and Brex. Ramp built around spend software and bill pay, and Brex has a much larger interchange and SaaS mix. Mercury is more rate sensitive because its economics are tied more directly to deposit balances and the yield earned on them.
Going forward, Mercury is heading toward a broader finance stack layered on top of deposits, with cards, treasury, workflow software, and lending all designed to make the bank account harder to leave. If it keeps turning startup cash into a durable distribution advantage, it can deepen from a banking app into the default financial hub for venture backed companies.