“Can a partner-bank fintech graduate into a chartered national bank and become the financial OS for venture-backed and SMB companies?”
Mercury started in 2019 as a partner-bank business-banking product for YC-era startups, riding the SVB collapse in 2023 to mass adoption. From 2022 onward it broadened beyond deposit accounts into venture debt, corporate cards, treasury yield, working-capital loans for ecommerce, and AI-powered accounting automation — becoming the financial OS for venture-backed and SMB companies. The 2025–2026 arc is the most consequential pivot: filing for and securing conditional OCC approval for its own national bank charter (Mercury Bank, Utah), which would move it off the partner-bank dependence that defined its first eight years.