Fintechs Verticalize to Own Infrastructure
Fintech investor on how banking-as-a-service platforms build partnerships
Verticalization in BaaS and card issuing is mainly a margin and control play. As fintechs scale, every outside vendor in the stack, sponsor bank, issuer processor, fraud tool, KYC vendor, card printer, takes a cut and slows product changes. Building more of that stack in house lets companies like Brex keep more interchange economics, tune approval and fraud logic themselves, and reduce dependence on infrastructure partners whose product roadmap may not match their own.
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The stack is layered. A sponsor bank provides the charter, an issuer processor connects the bank to Visa and Mastercard and handles authorizations, clearing, and settlement, and other vendors handle KYC and fraud. All in one BaaS platforms often bundle these third parties under one contract, which speeds launch but adds cost and limits customization.
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The money reason is straightforward. Interchange is split across the fintech, bank, network, and infrastructure providers. Research on BaaS unit economics shows that at scale the bank take can be pushed down to just a few basis points, with more economics flowing to the fintech and platform. That creates a strong incentive to renegotiate or replace partners as volume grows.
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Brex and Ramp are solving the same core problem, free corporate cards tied to expense software, but the deeper competition is over who owns more of the machinery underneath. In adjacent fintech markets the same pattern shows up as companies push into narrower customer segments and purpose built workflows, like franchise or agency banking, to raise margins and make the product harder to copy.
The next phase is fewer pure wrappers and more companies that either own critical infrastructure or pair generic rails with very specific workflows. The winners will be the ones that can both lower their cost per account and make the card, account, and software experience feel tightly integrated for a defined customer segment.