The short answer: SoFiUSD is now being used behind the scenes to settle SoFi Bank card activity across Mastercard’s network. This is a settlement-layer change, not a new checkout method: cardholders still pay normally, and SoFi says merchants can receive funds in a SoFi Bank account and convert them to cash without holding SoFiUSD themselves. The $25 billion figure is expected annualized card-program volume, not $25 billion already settled onchain.
What SoFi and Mastercard confirmed
On September 22, 2026, SoFi Technologies and Mastercard announced that stablecoin settlement was live across SoFi Bank, N.A.’s debit and credit card program. SoFi said it is migrating the full card program to blockchain-based settlement using SoFiUSD, a payment stablecoin issued by SoFi Bank.
The companies describe this as production settlement rather than a pilot. Their announcement says transactions are live on blockchain today and that the program is expected to process more than $25 billion in annualized volume.
How does SoFiUSD settlement work?
A card payment and the settlement of that payment are different layers. The customer can still tap, swipe or enter a normal card. The stablecoin is used in the infrastructure that moves value after the payment rather than requiring the shopper to acquire a token or connect a crypto wallet.
| Layer | What happens |
|---|---|
| Customer payment | The customer uses the existing SoFi debit or credit card experience. |
| Card network | Mastercard continues to provide the payment-network infrastructure and controls expected from its card system. |
| Settlement asset | SoFi Bank uses SoFiUSD for blockchain-based settlement of its card program. |
| Merchant access | SoFi says merchants using its business banking infrastructure can receive settlement funds without holding stablecoins and can withdraw to cash around the clock. |
This distinction matters because “stablecoin payments” can mean a customer paying a merchant directly with a token, or a regulated institution using a stablecoin behind the scenes for settlement. The SoFi-Mastercard launch is the second model. Our stablecoin payments guide explains the separate checkout, settlement and reconciliation layers.
What does the $25 billion figure mean?
The companies say SoFi is migrating its entire card program, which is expected to process more than $25 billion in annualized volume, to stablecoin settlement. That is a forward-looking scale measure for the card program. It should not be described as $25 billion of SoFiUSD already transferred, minted or settled onchain.
The launch is still notable because it attaches bank-issued stablecoin settlement to an existing card program at meaningful projected scale. It also creates a live example of a stablecoin being used as financial infrastructure while remaining largely invisible to the end customer.
What is SoFiUSD?
SoFiUSD is a payment stablecoin issued by SoFi Bank, N.A., a nationally chartered bank regulated by the Office of the Comptroller of the Currency. SoFi says the token is redeemable 1:1 for U.S. dollars and supported by reserves consisting primarily of cash.
Bank issuance does not make the token the same thing as an insured bank deposit. SoFi’s disclosure states that SoFiUSD is not a deposit, is not FDIC- or SIPC-insured, is not bank guaranteed and is not legal tender. Those distinctions belong alongside the 1:1 redemption claim when evaluating the asset.
For a broader comparison of legal claims, see our guide to stablecoins vs tokenized deposits. For asset-level checks, use the stablecoin selection framework.
Do merchants need to hold SoFiUSD?
Not for the merchant workflow SoFi describes. The company says merchants do not need to hold stablecoins, build blockchain infrastructure or change how they operate. Through SoFi’s Big Business Banking platform, participating merchants can receive settlement funds in a SoFi Bank account and withdraw to cash around the clock.
That design is important for adoption because it separates blockchain settlement from merchant treasury preference. A business can potentially benefit from a different settlement rail without taking an intentional long-term stablecoin position.
However, the announcement does not say that every Mastercard merchant automatically receives SoFiUSD settlement. SoFi says it is in discussions with large U.S. merchants about stablecoin-based settlement arrangements. No complete merchant list or rollout timetable was published with the September 22 announcement.
What changes compared with traditional card settlement?
The clearest operational promise is timing. SoFi says merchants using its business platform can access settlement funds and withdraw to cash around the clock rather than being limited to conventional banking windows. The blockchain layer can therefore change when settlement value is available even though authorization and the customer-facing card transaction still use familiar payment infrastructure.
That does not mean every part of the card lifecycle becomes instant or irreversible. Card authorization, disputes, refunds, fraud controls and network rules remain distinct processes. “Onchain settlement” should not be interpreted as eliminating the rest of the card system.
What does the launch not prove?
- It does not prove $25B has already settled onchain. The figure is expected annualized card-program volume.
- It does not mean every Mastercard transaction uses SoFiUSD. The confirmed launch concerns SoFi Bank’s card program.
- It does not make SoFiUSD an insured deposit. SoFi explicitly says it is not FDIC- or SIPC-insured.
- It does not guarantee every merchant gets 24/7 settlement immediately. SoFi describes its own business-banking path and says broader merchant discussions are ongoing.
- It does not remove stablecoin or blockchain risk. Issuer, operational, smart-contract, network and regulatory risks still need to be evaluated.
Our stablecoin risk guide separates issuer, reserve, custody, contract, bridge and network risk so a faster settlement claim is not mistaken for a risk-free payment rail.
Why this matters for stablecoin payments
The launch is a useful example of stablecoins moving from a customer-facing crypto product into back-end financial plumbing. Instead of asking millions of cardholders to change behavior, a bank and card network can change the settlement asset underneath an existing payment experience.
That architecture also makes comparisons more precise. A bank-issued stablecoin used for institutional settlement is not the same product as a consumer stablecoin wallet, a direct merchant crypto checkout, a tokenized bank deposit or an unregulated bridged token. Each can use blockchain technology while creating different legal claims and operational dependencies.
Sources and verification status
SoFi Technologies, September 22, 2026 — primary joint announcement confirming live settlement, the expected $25B+ annualized card-program volume, merchant workflow, SoFiUSD issuer and risk disclosures.
The Block, September 22, 2026 — independent confirmation of the live launch, card-program migration and merchant settlement model.
Barron's, September 23, 2026 — independent reporting on the live Mastercard settlement program and SoFiUSD’s role.
For broader context, return to the stablecoin guides hub or start with how to buy stablecoin.