Mercury three-year GAAP profit streak

Three straight years of GAAP profitability means Mercury is no longer behaving like a venture funded fintech experiment, it is behaving like a scaled bank like software company whose core deposit engine throws off real earnings. That matters because Mercury’s biggest revenue stream is interest income shared with partner banks on roughly $20B of deposits, with cards, wires, FX, venture debt, and $35 to $350 per month software adding smaller but diversifying layers on top.1 2 3 4

• Mercury said it was profitable by September 2022, then carried that through 2024, 2025, and 2026 as revenue scaled from about $254M annualized at the end of 2023 to $500M at the end of 2024, $720M at the end of 2025, and $1B by September 2026.1 4
• The reason profitability showed up early is that Mercury does not use deposits to make loans itself. Partner banks hold the deposits, do the bank balance sheet work, and share back interest revenue. That creates a leaner model than a traditional bank, while avoiding the cash burn common in fintechs that subsidize growth.2 3
• Compared with Ramp and Brex, Mercury has the most bank like earnings profile. Earlier research estimated about 90% of Mercury revenue came from deposit interest and about 10% from interchange, while Ramp leaned harder into software and Brex sat between the two. Mercury’s profits therefore track deposit scale and rates more directly.2 3 4

Going forward, profitability gives Mercury room to press its advantage by owning more of the stack. Its push toward a bank charter fits the logic of a company that already earns like a bank, because bringing the balance sheet in house can widen margins, harden infrastructure control, and turn startup banking into a broader finance system for business customers.3 4