There is no single U.S. fintech statute. A payment or lending product picks up obligations from a patchwork of federal regulators — the CFPB, FinCEN, the banking agencies, sometimes the SEC or CFTC — layered over fifty state licensing regimes. The result: two products that look identical to a user can carry completely different legal duties.
These guides are built around the questions examiners and bank partners actually ask: who touches the funds, who owns the customer relationship, what the fee really is, and which written agreement says so. Start with the guide that matches your product's mechanics, not its marketing label.