Coinbase and Marqeta expand card deal to settle stablecoin spend on Base

Marqeta and Coinbase on October 16 announced an expanded, six-year-deep collaboration to issue stablecoin-backed payment cards for both crypto-native and traditional businesses. Coinbase custodies the stablecoins and converts them to fiat, with onchain settlement running on Base, Coinbase's L2. Marqeta handles card issuance, processing, and bank and card-network relationships. The release went out via Business Wire, with coverage from The Block and Benzinga.

What the deal does

Marqeta's customers — Marqeta is a card-issuing platform used by neobanks, fintechs, and marketplaces — can now spin up cards whose funding source is a stablecoin balance held at Coinbase. At the point of sale, Coinbase converts the stablecoin into fiat; Marqeta hands that fiat to the merchant through the usual card-network rails. The acquiring side sees a normal card payment. The user side spends stablecoins at any merchant that takes cards.

The split is clean:

• Coinbase: custody of the stablecoin balance, conversion between stablecoin and fiat, onchain settlement on Base.
• Marqeta: card issuance, payment processing, issuing-bank and card-network relationships.
• Program sponsors (Marqeta's customers): define the card program (branded cards, spend controls, rewards), can fund card programs 24/7.

The release does not name a card network, an issuing bank, or a first country of launch. It also does not say which stablecoins the stack supports at launch; neither does it commit to a rollout date or publish fees.

Alec Lovett, Coinbase's Head of Infrastructure Products, framed the pitch in the release: "Our collaboration with Marqeta will combine our stablecoin payment rails with their powerful issuing and processing capabilities."

Context: three Marqeta stablecoin deals in three months

Marqeta is now carrying three overlapping stablecoin-card partnerships announced in the last three months:

1. Zerohash — July 23, 2026. Zerohash supplies custody, compliance, liquidity and settlement; Marqeta issues the cards.
2. BVNK — September 9, 2026. BVNK supplies the stablecoin stack; Marqeta issues the cards. Since Mastercard closed its $1.8B acquisition of BVNK on August 3, that deal effectively made Marqeta a launch customer of Mastercard's Global Money Platform (covered October 15).
3. Coinbase — October 16, 2026. Coinbase supplies the stablecoin custody, conversion and onchain settlement; Marqeta issues the cards.

Marqeta already processed Coinbase's own U.S. debit card in 2020, which let users spend crypto balances with Visa-rail routing. The new deal rebuilds that relationship around stablecoin-denominated accounts rather than directly-held crypto, and extends it from Coinbase's own card to Marqeta's hundreds of program-sponsor customers.

What to watch

1. Which stablecoins ship first. USDC — Coinbase's house stablecoin via Circle — is the base case, but the release deliberately did not name tokens. The first live program will tell.
2. The card network. Mastercard-rail cards would collide awkwardly with Mastercard's own Marqeta–BVNK pathway. A Visa-rail launch would read as a counter to Mastercard's Global Money Platform.
3. Base as the settlement chain. Coinbase will route the stablecoin leg across Base; the chain's throughput and fee behaviour at card-payment volumes is the real test. Nothing on the public roadmap flags any new Base changes for stablecoin-payment traffic.
4. Marqeta's three-stack problem. Zerohash, BVNK (Mastercard), and now Coinbase. Program sponsors signing with Marqeta from here on have to choose which stack carries them, and Marqeta has not said whether it will converge the three or sell them as parallel options.

Context

Stablecoin card issuance has consolidated into a card-plus-stablecoin pattern across the last twelve months: an issuer-processor (Marqeta, Stripe Issuing), paired with a stablecoin custodian-and-converter (Coinbase, BVNK, Zerohash, Bridge). Mastercard's Global Money Platform collapsed one pair into a network product on October 15; Visa Direct went live with USDC prefunding the same morning, per The Block. The Coinbase-Marqeta deal is Coinbase's answer at the custodian layer: not building a card program itself, but plugging into the biggest independent card-issuer platform. Who hits the first large-bank program sponsor is now the data point.