SoFi is widening the reach of its digital dollar. The company has brought SoFiUSD—the first stablecoin issued by a U.S. national bank—onto Polygon's Open Money Stack, adding the network alongside Ethereum and Solana, the two blockchains where the token already operates, as banks and fintechs push stablecoins deeper into everyday money movement.

The move pushes SoFiUSD further into payments infrastructure, placing it alongside Circle's USDC, Tether's USDT and PayPal's PYUSD on a stack that Visa, Mastercard and Stripe already use for stablecoin payments. It also builds on SoFi's broader digital-money push, from the original SoFiUSD launch to its SoFi Earn tokenized deposit, and deepens Polygon's $3 trillion-plus stablecoin payments business.

According to a Thursday announcement from Polygon Labs, SoFiUSD is now live on the Polygon Open Money Stack, a payments layer that bundles fiat on- and off-ramps, embedded wallets and cross-chain settlement into a single integration. The expansion lets SoFi's more than 17 million members buy, sell, hold and convert the token on Polygon directly within the SoFi app, without opening a separate crypto wallet or manually bridging assets between chains.

"SoFi is well positioned to bring stablecoins into mainstream finance because it combines the regulatory foundation of a national bank with the reach of a major consumer and enterprise technology platform," said Marc Boiron, CEO of Polygon Labs, in the announcement.

The integration lands as stablecoins move beyond crypto trading into the plumbing used to settle card payments, pay businesses and send money across borders. On the Open Money Stack, SoFiUSD can connect to the wallets, banking rails and local currencies that businesses rely on for payouts, settlement and cross-border transfers, opening up uses well beyond consumer trading.

SoFiUSD is redeemable one-to-one for U.S. dollars and is issued by SoFi Bank, which is regulated by the Office of the Comptroller of the Currency, the U.S. regulator that charters and supervises national banks. SoFi launched the token late last year across Ethereum and Solana as the first stablecoin from a U.S. national bank, and it already settles the company's entire card program over Mastercard's network. The firm has also been building out a broader digital-money suite around the token, recently introducing SoFi Earn, a tokenized deposit—a blockchain representation of a deposit balance held at the bank—that pays a 4.40% yield and converts one-to-one into SoFiUSD.

For Polygon, the addition strengthens a payments business that has become one of the network's calling cards. The company recently extended the Open Money Stack to Solana as well, and Visa and Mastercard support stablecoin settlement on Polygon, while Stripe uses the network to route USDC payments for merchants in more than 150 countries.

SoFiUSD is a payment stablecoin, not a bank deposit, and is not FDIC- or SIPC-insured, bank-guaranteed or legal tender.