A card programme settling in stablecoin

SoFi Bank has gone live with stablecoin settlement across Mastercard's network, migrating its full card programme to blockchain settlement using SoFiUSD, the bank's own stablecoin.

The word to notice is full. Card settlement pilots have been announced regularly for several years, almost always confined to a corridor, a product line or a merchant category. Moving an entire programme means the settlement path is no longer an experiment running beside the production one.

The arrangement was set up in advance rather than assembled quickly. SoFi's own press record lists the partnership with Mastercard to enable SoFiUSD settlement across the network as announced on 3 March 2026 — roughly six months between agreement and production.

Settlement is the unglamorous half of a card transaction and the half where the money actually moves. The authorisation a cardholder experiences takes a second; the settlement between issuer, network and acquirer takes a day or more and involves prefunded balances sitting idle against it. That idle balance is the cost a settlement stablecoin is aimed at, not the checkout experience.

What makes this case different from most stablecoin payment announcements is the issuer. SoFiUSD is issued by a regulated bank settling its own card programme, which places the instrument inside bank supervision rather than beside it — the same structural distinction now being drawn around tokenised deposits.