Citigroup and Coinbase on September 28 announced an expanded partnership that routes stablecoin payment acceptance through Citi's merchant-processing infrastructure, covering a network that moves approximately $6 trillion daily. Under the arrangement, Citi's institutional clients — including larg...
"This partnership with Coinbase is a pivotal step in our ongoing Services strategy to provide optionality for our clients." — Shahmir Khaliq, Head of Services, Citigroup
Citigroup and Coinbase on September 28 announced an expanded partnership that routes stablecoin payment acceptance through Citi's merchant-processing infrastructure, covering a network that moves approximately $6 trillion daily. Under the arrangement, Citi's institutional clients — including large multinational corporations — can accept stablecoin payments at checkout via Spring by Citi, while Coinbase handles token-to-fiat conversion and Citi settles in traditional currency as bank of record. Merchants never hold digital assets directly.
The deal also introduces Coinbase Virtual Accounts, powered by Citi's Virtual Account Wallet, which provide bank-account-like functionality with automatic fiat-to-stablecoin conversion — described by both firms as an industry first. The products launch initially in the United States. No launch date or pricing has been disclosed.
The announcement arrives during Sibos 2026 in Miami, where Citi CEO Jane Fraser used her keynote to frame stablecoin infrastructure as a solution for what she described as "trapped liquidity" — a friction point that, according to Citi's internal analysis, drives more than 70% of corporate client pain points. Citi simultaneously expanded its tokenized-deposit platform, Citi Token Services, to Japan and the UAE, bringing its cross-border instant-settlement footprint to seven markets.
The partnership has two components.
Spring by Citi — Merchant Stablecoin Acceptance. Citi's institutional clients can accept stablecoin payments through Spring by Citi, the bank's integrated platform for merchant acquiring, gateway technology, and settlement. When a buyer pays in stablecoins, Coinbase's payment infrastructure converts the tokens to fiat in real time. Citi, acting as bank of record, credits the merchant in traditional currency. The merchant's treasury never touches a digital asset. The companies said the setup opens merchants to more than 150 million stablecoin holders globally.
Coinbase Virtual Accounts. Coinbase selected Citi's Virtual Account Wallet — a banking-as-a-service product — to power a new class of accounts that accept, hold, and pay funds while automatically converting incoming fiat into stablecoins. Alec Lovett, Coinbase's head of infrastructure product, described the result as "bank-account-like functionality with the speed of stablecoins underneath it." Brett Tejpaul, head of Coinbase Institutional, said the collaboration moves the digital asset economy "from experimentation to everyday commerce."
The two firms first announced a partnership in October 2025 focused on fiat-to-crypto payment infrastructure for institutional clients. The September 2026 expansion moves the relationship from back-office plumbing into merchant-facing checkout flows. Both companies said additional capabilities would follow in coming months without specifying what those capabilities would be.
The Coinbase deal is one piece of a broader digital-asset infrastructure buildout at Citi.
On the same day, Citi extended its tokenized-deposit platform — Citi Token Services — to Japan (supporting USD transactions) and the UAE (supporting USD and euro liquidity management with 24/7 access). The platform now operates in seven markets: the United States, Ireland, Hong Kong, Singapore, the United Kingdom, Japan, and the UAE.
Citi Token Services runs on a private, permissioned blockchain solely owned and managed by Citi. It enables programmable, near-instantaneous liquidity movement outside conventional banking cut-off times and holiday calendars. Clients connect existing Citi accounts to the tokenized cash infrastructure without managing separate tokens. The platform processes approximately $1 billion daily, according to reporting from CryptoTimes.
For comparison, JPMorgan's competing Kinexys platform — which performs a similar function using tokenized deposits — processed over $3 trillion since inception and averaged more than $5 billion daily as of April 2026.
Citi CEO Fraser confirmed in July 2026 that the bank is "looking at the issuance of a Citi stablecoin." The bank is also among 21 financial institutions committed to participating in a shared tokenized-deposit network with JPMorgan and Bank of America, targeting the first half of 2027.
Citi's move places it in a widening field of banks and payment processors embedding stablecoin infrastructure into existing corporate payment rails.
JPMorgan. Kinexys, JPMorgan's digital-asset division, rolled out the JPMD deposit token to institutional clients on Base in November 2025 and extended it to the Canton Network in 2026. Kinexys processes approximately $7 billion daily, according to Citi competitor filings.
SoFi. In April 2026, SoFi extended its stablecoin token into a full enterprise product — Big Business Banking — where companies hold deposits, move money, and settle in fiat or crypto around the clock over Mastercard rails. SoFi's card program represents approximately $25 billion in annual volume.
Circle Arc. Circle's USDC-native Layer 1 chain, Arc, went live on public mainnet on September 16 with founding validators including BlackRock, DTCC, Galaxy, Global Payments, ICE, Mastercard, MoneyGram, SBI Group, Standard Chartered, Sumitomo Corporation, and Visa.
Card Networks. Visa and Mastercard have both announced products that maintain their positions as intermediaries linking stablecoin payments with fiat settlement, aiming to capture transaction fees on stablecoin volumes the same way they do on card swipes.
The common thread: incumbents are not building around stablecoins. They are building stablecoins into existing infrastructure, preserving their fee-capture positions while absorbing the settlement-speed advantages of blockchain-based tokens.
The timing aligns with a maturing U.S. regulatory framework. The GENIUS Act — signed into law in 2025 — assigns primary federal supervision of permitted payment stablecoin issuers to the OCC, the Federal Reserve, and the FDIC, depending on the issuer's charter. Three federal agencies have issued proposed rules for implementation:
Comments on the Treasury's proposed rule are due October 19, 2026. The Fed separately published final stablecoin reserve and redemption rules in September 2026, as previously reported.
The regulatory clarity has removed the primary barrier that kept large banks from treating stablecoin services as a compliance-approved product line. Citi banks 90% of top eCommerce companies and 15 of the world's 20 largest fintech firms, according to its press release — all of which now have a regulatory-compliant path to accept stablecoin payments through existing banking relationships.
The total stablecoin market capitalization stands at approximately $302.8 billion as of September 10, 2026, according to StablecoinBeat, down 4.5% from a May 2026 all-time high of $322.4 billion. USDT leads with $183.4 billion (60.6% market share), followed by USDC at $74.2 billion. USD-pegged tokens account for 99.4% of total supply.
In the first seven months of 2026, approximately $4 trillion in stablecoins were processed — an 83% increase year-over-year — with monthly payment flows exceeding $10 billion and business-to-business transactions representing 63% of total volume, according to FinanceX Magazine.
The volume data suggests that stablecoin usage has shifted from speculative trading toward commercial settlement. Citi's decision to open its merchant-processing network to stablecoin acceptance reflects that shift. When 63% of stablecoin flow is corporate rather than retail trading, the product belongs in a corporate bank's payment stack — not in a speculative-asset wrapper.
Debopama Sen, Citi's head of payments services, said the goal is building "next generation payments infrastructure, one that is seamless, interoperable and operates across both traditional and digital payments instruments." The word choices — seamless, interoperable — describe plumbing, not products. That framing is consistent with how large banks have historically absorbed new payment technologies: by embedding them into existing pipes rather than creating standalone offerings.
The Citi-Coinbase deal marks a specific moment in the stablecoin market's maturation: a top-five global bank embedding stablecoin payment acceptance into the same merchant-processing platform it uses for card transactions and wire transfers. The integration does not create a new payment product. It adds a new input format — stablecoins — to an existing settlement system.
The economic logic is straightforward. Citi retains its position as bank of record and settlement provider. Coinbase captures conversion fees and broadens its institutional revenue base. Merchants gain access to 150 million stablecoin holders without operational exposure to digital assets. The arrangement preserves existing value-capture relationships while extending the addressable payment surface.
Whether this model — incumbent absorption rather than displacement — becomes the dominant pattern for stablecoin commercialization depends on whether the fee economics remain competitive with native stablecoin settlement. For now, Citi, JPMorgan, and SoFi are betting that corporate treasurers will pay for the compliance wrapper and the familiar banking interface. The first seven months of 2026 volume data — $4 trillion processed, 63% corporate — suggests those treasurers are showing up.