Citi, Coinbase launch stablecoin tie-up

Citigroup has announced a new partnership with Coinbase (COIN) that enables the bank’s institutional and large corporate clients to accept stablecoin payments through Citi’s existing merchant acquiring and merchant-processing services. The collaboration, disclosed on September 28, 2026, brings together Citi’s role as a global transaction bank with Coinbase’s crypto infrastructure to support digital-dollar transactions for merchants and enterprises.

Under the arrangement, stablecoin payments will flow over Coinbase’s blockchain rails while being integrated into the payment flows that Citi already manages for institutional clients. This is intended to let merchants accept stablecoins in a way that connects with the bank’s established processing channels rather than building separate crypto-specific systems.

Within the partnership, Coinbase will supply the stablecoin payment channel and underlying blockchain technology. Citigroup will handle settlement and act as the custodian bank that automatically converts incoming stablecoins into fiat currency for corporate recipients, so that end clients can receive conventional funds without directly managing digital assets.

This structure positions Citi as the bank of record for the payment flows while leaving the crypto-asset handling and blockchain execution to Coinbase. Corporate treasurers can thus interface with familiar banking processes while still accepting stablecoin payments from their own customers.

The collaboration is described as bidirectional, extending benefits to Coinbase payment clients as well. These clients will be able to access Citigroup’s banking tools to receive, hold and make payments in a manner similar to a traditional bank account, integrating their digital-asset activity more closely with regulated banking services.

Within this framework, cash balances held by Coinbase clients can be automatically converted into dollar-pegged stablecoins. Stablecoins held at Coinbase as part of the setup currently earn an annualized reward of 3.75%, creating an additional yield component on top of the payments functionality.

Despite the scope of the tie-up, several important operational specifics have not yet been disclosed. Initial reports did not provide a launch date for the service, nor did they outline the fee structure that merchants or Coinbase clients will face when using the new stablecoin payment capabilities.

The parties have also not detailed which stablecoins will be supported at launch, how broadly the service will be available across regions, or what transaction volumes are expected. As a result, while the strategic contours of the arrangement are clear, the practical reach and economics of the offering will depend on information that has not yet been made public.