Mastercard is Using a Bank-Issued Stablecoin to Settle Card Transactions on Ethereum

SoFi Technologies and Mastercard announced a partnership enabling SoFiUSD to serve as a settlement currency across Mastercard’s global payments network, marking the first time a stablecoin issued by a US nationally chartered FDIC-insured bank has been used for global network settlement on a public blockchain.

What the Partnership Does

The mechanics are straightforward. When a card transaction runs through Mastercard’s network, settlement traditionally happens through a series of correspondent banking relationships that operate on business day schedules with cutoff times and processing delays. SoFiUSD replaces that process with near-instant, 24/7 settlement on Ethereum.

SoFi Bank, N.A. will settle its own credit and debit card transactions using SoFiUSD directly. Galileo, SoFi’s payments technology platform that powers other fintechs and issuing banks, will be among the first platforms to offer its clients the option to settle using SoFiUSD as well.

The reach of Galileo means the partnership extends beyond SoFi’s own card transactions to whatever volume its fintech clients choose to route through the new settlement rail.

SoFiUSD is supported on Mastercard’s Multi-Token Network, a platform designed to bridge traditional finance with tokenized assets. The MTN is Mastercard’s infrastructure play for the tokenized payments world, and SoFiUSD becoming a settlement currency on it is a material validation of both the network and the stablecoin.

Why the FDIC-Insured Bank Detail Matters

The announcement describes SoFiUSD as the first stablecoin issued by a US nationally chartered, FDIC-insured bank to be used for global network settlement on a public, permissionless blockchain. That combination of qualifiers is doing significant work.

Most stablecoins are issued by non-bank entities. USDT is issued by Tether, a company incorporated in the British Virgin Islands. USDC is issued by Circle, a money services business. Neither is a nationally chartered bank. Neither carries FDIC insurance on its reserves.

SoFi Bank, N.A. is a nationally chartered bank. SoFiUSD reserves are held as cash for immediate redemption. The FDIC insurance backstop and the national bank charter create a regulatory foundation that distinguishes SoFiUSD from every other major stablecoin currently in circulation. For institutional counterparties and corporate clients evaluating stablecoin settlement risk, that foundation matters in ways that pure technical performance cannot address.

The Solana deposit enablement announced earlier this week was the first expression of SoFi’s crypto infrastructure. The Mastercard partnership is the second, and it operates at a fundamentally different scale.

The $30 Billion Daily Volume Context

Stablecoin transaction volume reached approximately $30 billion per day in 2025, according to the announcement. That figure is what prompted Mastercard to accelerate its on-chain settlement capabilities. Payment networks follow volume. When a payment category reaches $30 billion per day and is growing, building infrastructure to capture that volume is not optional for a global network.

The daily stablecoin volume figure also contextualizes the competitive pressure on traditional settlement infrastructure. SWIFT processes roughly $5 trillion per day in messages, but much of that is institutional FX and large-value transfers. For the consumer and SME payment categories where stablecoins are increasingly active, $30 billion per day represents meaningful market share that is bypassing traditional rails entirely.

Mastercard connecting SoFiUSD to its network is partly a defensive move, keeping that settlement volume within infrastructure Mastercard can monetize, and partly an offensive one, positioning the network as the bridge between traditional card payments and on-chain settlement.

The Use Cases

Cross-border remittances are the first-order use case. A SoFi cardholder sending money internationally currently pays fees and waits days for settlement through correspondent banks. SoFiUSD settlement on Mastercard’s network collapses that to near-instant at any hour.

B2B transfers are the higher-value use case. Large businesses settling invoices between each other currently face the same correspondent banking friction at much larger dollar values. Programmable treasury, where automated fund flows execute based on contract conditions rather than manual initiation, is the longer-term ambition that requires both the stablecoin infrastructure and corporate adoption of smart contract-based treasury management.

SoFiUSD launched in December 2025. The Mastercard partnership is the first major distribution announcement for the product. Whether the use cases beyond SoFi’s own card settlement materialize depends on Galileo client adoption and corporate treasury appetite for on-chain settlement, both of which are early-stage at this point.

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