How do stablecoin payments work?

#What is a stablecoin payment, in plain words?

A stablecoin is a crypto token meant to hold a steady value, such as one US dollar. US law defines a payment stablecoin as a digital asset that is, or is designed to be, used as a means of payment or settlement, whose issuer is obligated to convert, redeem or repurchase it for a fixed amount of monetary value⁠^[1]. Paying with one means sending that token, rather than moving money between bank accounts.

That is the key difference from the payments covered elsewhere in this channel. A card payment moves through card networks and banks, as explained in how card payments work. An instant bank transfer moves bank money between accounts, as in instant payments explained. A stablecoin payment changes who holds a token on a shared ledger; whether and when anyone touches a bank account depends on what the receiver does next.

#What happens step by step when you pay with a stablecoin?

#Who stands behind the $1, and can the price slip?

Under the GENIUS Act, a payment stablecoin issuer must maintain identifiable reserves on an at least 1 to 1 basis, in assets such as cash, insured bank deposits and short-dated Treasury bills⁠^[1]. The same law says payment stablecoins shall not be backed by the full faith and credit of the United States or be subject to FDIC deposit insurance⁠^[1]. The promise behind the $1 is the issuer's, backed by its reserves.

The price you can get on a trading platform is a separate matter. The BIS notes that stablecoins are traded in secondary markets at an 'exchange rate' that can deviate from par⁠^[2]. A Federal Reserve note on the March 2023 Silicon Valley Bank failure records that Circle was unable to withdraw $3.3 billion of USDC reserves from SVB and that, at its trough, USDC traded at 86 cents to the dollar, before fully recovering once Circle began processing redemptions on Monday, March 13⁠^[3].

#How are stablecoins actually used for payments today?

Mostly not for shopping yet. In February 2025, Fed Governor Christopher Waller said stablecoins are involved in over 80 percent of trading volume on major centralized crypto exchanges and that, at present, stablecoin use for retail payments is very limited⁠^[4]. In March 2026, Governor Michael Barr said stablecoins are mostly used to facilitate crypto-trading activities, and that they might also be used to reduce the costs of remittances between some countries⁠^[5].

The BIS describes a similar path: stablecoins emerged as an on- and off-ramp to the crypto ecosystem and, more recently, as a cross-border payment instrument for residents in emerging market economies lacking access to the dollar⁠^[2]. For how traditional cross-border payments work and what they cost, see cross-border payments explained.

#What risks should payers and merchants know about?

Governor Barr has said stablecoins will be stable only if they can be reliably and promptly redeemed at par in a wide range of conditions⁠^[5], and Governor Waller has said that, like any form of private money, they are subject to run risk⁠^[4]. The BIS adds that as digital bearer instruments on borderless public blockchains, stablecoins have been the go-to choice for illicit use⁠^[2] — one reason platforms run identity checks, explained in KYC explained.