Stablecoins move into payments rails

A stablecoin started as a crypto trader’s parking spot, but in April 2026 it is being rebuilt into the plumbing behind card settlement, merchant checkout, and business payouts by companies that already move ordinary money at global scale. Visa said in January 2026 that United States issuers and acquirers can now settle with Visa in Circle’s USD Coin, and it said its stablecoin settlement volume had reached a $3.5 billion annualized run rate. That means the token is not just sitting in wallets; it is being used to close out obligations inside a major card network. Stripe is pushing the same shift from a different angle: checkout. Its current stablecoin payments docs say businesses can accept USD Coin, Pax Dollar, and Global Dollar from crypto wallets while Stripe settles the completed payment into the merchant’s balance in United States dollars. Stripe also rolled out stablecoin subscription payments in private preview for United States businesses, starting with USD Coin on Base and Polygon. That turns a token from a one-off transfer into something that can handle the boring recurring bill people usually pay with a card. Mastercard is wiring stablecoins into both acceptance and money movement. In June 2025 it said it would enable Global Dollar, PayPal USD, USD Coin, and Fiserv USD Coin across its network and add new capabilities through Mastercard Move and its Multi-Token Network. Then in March 2026 Mastercard agreed to buy BVNK for up to $1.8 billion. Mastercard said BVNK’s infrastructure would help connect ordinary bank money and stablecoins so financial institutions can handle stablecoins, tokenized deposits, and tokenized assets on the same rails. Banks are moving in because they do not want the new rails to belong only to crypto firms. FIS, one of the biggest banking technology vendors, partnered with Circle in July 2025 so bank clients using its Money Movement Hub can transact in USD Coin through infrastructure they already use for wires and real-time payments. FIS is also talking up tokenized deposits, which are bank deposits put onto digital ledgers instead of tokens issued outside the banking system. The International Monetary Fund said in April 2026 that tokenized deposits remain claims on regulated banks and stay embedded in the existing monetary system, which is exactly why banks see them as a bridge into this market. Washington is now building rules around that distinction. On April 10, 2026, the Federal Deposit Insurance Corporation published a proposed rule saying tokenized deposits are still deposits and laying out standards for FDIC-supervised payment stablecoin issuers, including reserve assets, capital, liquidity, and custody. The retail piece is moving too. Reports on April 9 said MoonPay, WalletConnect, and Ingenico are working on in-store stablecoin payments where the shopper pays from a crypto wallet, MoonPay converts the funds, and the merchant receives ordinary currency settlement through the banking system. Even startup infrastructure is being packaged around this. CoinsPaid said on April 9 that it partnered with The Residency so early-stage companies can plug into stablecoin payment and cross-border settlement tools from the start, instead of adding them years later after building around cards and bank transfers. The pattern is that stablecoins are no longer being pitched as an alternative financial universe. Visa is using them for settlement, Stripe is putting them into checkout, Mastercard is buying the pipes, FIS is selling them to banks, and regulators are writing rules that treat them as something institutions are expected to handle.