Stablecoins as Settlement Rails

Stablecoins are being recast as payment plumbing: digital dollars that move money between companies, wallets and banks, not just tokens for crypto trading. (federalreserve.gov) A stablecoin is a digital token designed to hold a fixed value, usually $1, and firms use it like a settlement chip to move funds around the clock on blockchain networks. The Federal Reserve wrote on March 30 that payment stablecoins are being used in cross-border transfers because they can shorten payment chains and reduce settlement frictions. (federalreserve.gov) The scale is no longer small. Bloomberg reported on January 8, citing Artemis Analytics data, that stablecoin transaction volume rose 72% to $33 trillion in 2025, with Circle’s USDC at $18.3 trillion and Tether’s USDT at $13.3 trillion. (bloomberg.com) Payment companies are wiring that infrastructure into products customers already use. Nium said on April 21 that its Coinbase integration is live, letting clients send, receive and convert USDC with fiat payouts across more than 190 countries. (nium.com) Nium said the setup also supports treasury management and stablecoin-funded card programs, with Coinbase providing wallet, liquidity and custody services. Nium says its network supports more than 100 currencies and operates with more than 40 licenses and registrations. (nium.com) Consultants and central bankers are now describing the same shift in more formal language. McKinsey wrote in July 2025 that tokenized cash, including stablecoins, was moving into cross-border payments, remittances, capital-markets settlement and treasury management. (mckinsey.com) The pitch is simple: instead of parking money in prefunded accounts in multiple countries, a company can fund in a stablecoin, move value onchain, and convert to local currency near the payout point. Nium said its product is designed for “just in time” settlement rather than prefunding. (nium.com) That does not settle the argument. The Federal Reserve said stablecoins can also complicate monetary policy implementation and raise questions about reserve assets, supervision and cross-border regulatory coordination. (federalreserve.gov) Regulation is moving alongside the business build-out. The Federal Reserve note says Congress passed the GENIUS Act in July 2025 to create a U.S. framework for payment stablecoins and define authorized issuers. (federalreserve.gov) The result is a payments story more than a crypto story. Firms are selling stablecoins as faster settlement rails for payouts and cross-border flows, while regulators are trying to decide how much of the financial system should run on them. (mckinsey.com)