Chime Internalizes Core Banking Infrastructure

This was a control move, not just a cost move. When SoFi bought Galileo in April 2020 for $1.2B, a direct competitor suddenly owned the processor handling core jobs like account setup, card issuance, direct deposit, ACH movement, and replacement cards for many fintechs. For Chime, building more of that stack in house meant less dependence on a vendor that sat directly in the critical path of product launches, reliability, economics, and roadmap speed.

• For a fintech like Chime, the backend is the machinery behind the app. It keeps the ledger straight, routes money movement, assigns users to accounts, and tells a card processor when to create or replace a card. If that layer is external, every new feature depends on another companys priorities and service levels.
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• The build decision is expensive because fintechs usually need their own KYC tools, ledger, processor, ops workflows, compliance staff, and bank integrations. But the switching costs are also huge, since moving providers can mean new account numbers, new cards, and customer disruption. That makes partial internalization attractive once a company is large enough.
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• This also sharpened the Chime versus SoFi split. Chime won by acquiring mass market debit users and monetizing interchange. SoFi moved upmarket and, through Galileo, captured infrastructure revenue from other fintechs too. One company owned distribution, the other added picks and shovels underneath the market.
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The next phase is more vertical integration. Large consumer fintechs are likely to keep pulling core banking functions in house while still buying modular tools for narrow jobs like identity, fraud, or direct deposit. That pushes the market toward a divide where the biggest apps own more of their stack, and infrastructure providers serve everyone below that scale.