Marqeta, a modern card issuing platform, has taken over processing of the Square Credit Card, Block’s business credit product for Square sellers, which operates on the American Express Network. The move brings Square’s debit, prepaid and credit card programmes onto a single issuer processor, aiming to simplify operations and accelerate the rollout of new financial products for small businesses.

The consolidation is designed to help Square streamline its card infrastructure and introduce new credit features more quickly. Marqeta’s portfolio migration technology enabled existing accounts and card credentials to transfer to the platform without requiring cardholders to change how they use their cards.

The agreement builds on a relationship dating back to 2019, when the companies launched the Square Card, a business debit card that gives small business owners immediate, fee-free access to their earnings. The Square Credit Card provides sellers with a credit line that can grow alongside their business activity.

Research from Marqeta’s 2026 State of Credit report points to demand for credit products that adapt as businesses develop. Among the small and medium-sized businesses surveyed, 96% said they deliberately choose which payment method to use for each transaction. A further 34% had switched credit products as their business changed, while 64% wanted a clear path from basic to more advanced offerings.

Marqeta’s commercial credit platform combines card issuance and transaction processing with underwriting, rewards, risk controls and dispute management through a single integration. Its capabilities include detailed spending controls, flexible account structures and real-time decisions informed by more than 300 data attributes.

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