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Marqeta runs the software that lets other companies issue their own payment cards and process the transactions behind them.
Marqeta is a behind-the-scenes payments company. It doesn't put its name on any card you'd carry. Instead, it sells the software and plumbing that lets other businesses — fintech startups, banks, and big brands — launch their own cards and handle every swipe, tap, and online payment that follows.
Here's the basic problem it solves. To offer a payment card, a company traditionally needed a bank partner, a card network, and a pile of old, clunky payment technology. Marqeta built a modern, cloud-based platform with open APIs — meaning its customers' own engineers can plug into it and build exactly the card program they want. The company issues the cards, approves or declines each transaction in real time, and manages the money movement. It makes money mainly by charging fees on the transactions and programs it powers. Customers pick Marqeta because it's flexible and fast to build on, which matters enormously in a world where a new card product can be the difference between winning and losing customers. Marqeta became famous for powering Block's Block Cash App Card and is also known for its work with Uber and other fintechs and brands. The trouble is that concentration: a small number of large customers have long made up a huge share of its revenue, so when one of them changes course — as Block did by bringing more of its card processing in-house — Marqeta feels it. The company has been working to diversify, signing up new partners in areas like buy-now-pay-later and expense management, and expanding into credit card issuing, but it's still a business whose fortunes swing on a handful of big relationships.
Marqeta went public in 2021 at the peak of fintech excitement and has since had to prove it can grow without leaning on a few whales. It's headquartered in Oakland, California. The whole bet is that every company will eventually want to offer some kind of payment card, and when they do, they'll want modern tools rather than a bank's dusty back office. Whether that bet pays off depends on how well Marqeta turns its early customer wins into a broad, durable base of business.
Saved answer · last researched 15 Nov 2026