Brex underwrites startup cash balances
Brex: the $400M/year anti-Amex
This was the opening that made Brex possible. Big banks and card issuers were built to like predictable borrowers, companies with revenue, profits, long operating history, and owners willing to back the card personally. Startups looked backwards on those screens. They often had no revenue and negative cash flow, but they had millions of venture dollars sitting in the bank. SVB built a specialized business around that mismatch, and Brex turned it into software by underwriting the cash balance directly and issuing cards without the founder putting personal credit on the line.
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For incumbents, startup accounts were awkward economics. Large deposits were attractive, but the company often did not borrow much, had no profits to underwrite, and needed exceptions to normal risk rules. SVB served that niche through deep venture relationships and became the default bank for much of the startup ecosystem.
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Brex attacked the pain point the incumbents left open. Instead of asking for years of financials and a founder guarantee, it connected to the company bank account, looked at cash on hand, and approved a card quickly. That let a newly funded startup spend company money immediately after a round closed.
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The broader market then shifted from who issued the card to who controlled the workflow around it. Expense and procurement software from players like Ramp and Teampay made the card less sticky and the approval engine more valuable, which is why Brex moved beyond cards into finance software and enterprise spend controls.
Going forward, the winner in startup finance is less likely to be the institution with the oldest balance sheet and more likely to be the product that can price risk from live cash data and then layer approvals, bill pay, travel, and accounting automation on top. The market is moving from relationship banking toward software led financial control.