Citi is widening a stablecoin checkout service built with Coinbase, pushing it into the US market first. The system lets institutional merchants accept stablecoin payments and convert them straight into fiat, so they never have to hold digital assets on their balance sheet.
The expansion was announced Tuesday, though Citi and Coinbase haven't said when the service will be broadly available or which stablecoins it will support.
How the checkout service works
The idea is simple enough: a customer pays in a stablecoin, and the merchant gets dollars. Coinbase handles the crypto side of the transaction — custody, conversion, settlement — while Citi provides the fiat payout rails that merchants already use for ordinary card and wire payments.
That fiat-payout piece is the part Citi is leaning on. Institutional merchants have been slow to accept crypto at checkout, partly because of price swings and partly because of accounting headaches. Stablecoins solve the price problem. The conversion service is meant to solve the accounting one.
For merchants, the appeal is a payment method that settles in fiat without the merchant ever touching a token. For Citi and Coinbase, it's a way to route crypto payments through traditional banking rather than around it.
US-first rollout, few specifics
Citi and Coinbase are keeping the details thin. The companies say the rollout starts in the United States, but they haven't named the merchants, the exact launch date, or the full list of supported stablecoins. General availability remains unspecified.
That leaves several open questions. Will the service support just one stablecoin, or several? Will it handle payments only, or payouts to merchants in other currencies? Citi and Coinbase aren't saying yet.
The lack of detail isn't unusual for a banking-crypto product in early rollout. Regulators on both sides of the Atlantic have been tightening rules around stablecoin issuance and payment processing, and banks tend to keep their crypto partnerships quiet until the compliance groundwork is settled.
Why banks are warming to stablecoin payments
Citi's move fits a broader shift among large banks. After years of keeping crypto at arm's length, several are now building payment services that use stablecoins as a settlement layer while keeping fiat as the end product. The pitch to institutional clients is that they get the speed of crypto settlement without the exposure.
Coinbase, for its part, has been signing up banking partners to extend its payment and custody infrastructure into traditional finance. The Citi partnership is one of the more visible examples of that strategy.
Stablecoins pegged to the dollar have become the crypto market's most-used payment instrument, mostly because they don't swing in value the way bitcoin or ether do. For a merchant accepting a $10,000 payment, that predictability matters more than the underlying blockchain.
What's still missing
The two companies haven't said how the service will be priced, whether merchants will pay a conversion fee, or how Coinbase and Citi will split the revenue. They also haven't said whether the service will eventually extend beyond the US.
For now, the expansion is US-first, fiat-payout only, and short on specifics. Merchants who want to accept stablecoins through Citi will have to wait for a launch date that hasn't been announced — and for a list of supported tokens that hasn't been published.
The next concrete step would be a general availability date or a pilot merchant list. Neither has been disclosed.
