Polygon Adds Solana Support to Stablecoin Payments Infrastructure Across 48 U.S. States
Key Facts
Polygon announced on October 29, 2026, that it had added support for the Solana network to Open Money Stack, enabling businesses on the platform to process a stablecoin payment that starts with a bank deposit and ends with a withdrawal of funds to a bank. The company said the flow links a deposit to a stablecoin balance and then to a payment to a bank account, expanding the functions available on its payments infrastructure. The announcement comes after stablecoin volume on Solana exceeded $2 trillion each quarter, according to Polygon. The service includes receiving, converting and routing funds between networks, then sending them to a payment destination. The company said Solana is the latest network added to the service and that it will continue expanding to other blockchain networks.
Deposit options include bank transfers, cards, cash and cryptocurrencies, according to Polygon. Fiat currencies can be converted into digital assets on Solana and vice versa, then sent to bank accounts, cards, cash or wallets. This gives businesses a route that starts with multiple funding methods and ends with multiple payment methods, based on the capabilities the company announced. The routing service also supports USDC, USDT, PYUSD, SOL and wrapped SOL. Polygon says these assets can be transferred between Solana, TRON and EVM networks in a single transaction. The announcement did not specify whether these functions are available under regulations in markets outside the U.S. coverage the company announced.
Polygon added that embedded wallets on Solana use the same API as EVM wallets, allowing developers to work with both wallet types through the same interface. The company positioned this functionality alongside receiving, converting and routing funds among the tools now available to businesses on the network. Support for TRON preceded this step: on October 8, 2026, Polygon announced a business flow that starts with a deposit, passes through a wallet and cross-network routing, and ends with a withdrawal. The latest addition shows Open Money Stack continuing to expand to other networks, while the company said Solana support is not the final stop. Polygon did not say when the next networks would be added.
The announcement draws on Solana stablecoin activity: the Solana Foundation said supply reached a record $17.3 billion on September 25, 2026. Average daily active stablecoin addresses stood at 888,000 during the same month, up 269% from 333,000 in September 2025. The foundation also cited the integration of stablecoins into Column Bank’s core banking system during September, allowing USDC and USDT on Solana to be converted to and from dollars around the clock, with the network adopted by default. These figures reflect growth in supply and address activity compared with the previous year, while the Column example provides context on the network’s use for conversion between stablecoins and dollars. These indicators remain separate from the details of Open Money Stack’s usage announced by Polygon.
The Solana Foundation cited a payment-channel test announced in September, in which 100,000 unique wallets used a payment-channel prototype that simulated more than one million payments per second. This was a test result, not a measure of the network’s usual payment rate. In second-quarter 2026 data, stablecoin supply on Solana was $16.3 billion, up 48% year over year, according to a filing by DeFi Development Corp. with the U.S. Securities and Exchange Commission. During the same period, spot trading on decentralized exchanges on Solana totaled $160.8 billion, down 44% from the first quarter, when it reached $288.5 billion. The comparison places annual supply growth alongside a quarterly decline in trading, two different measures of network activity.
On regulatory coverage, Polygon said in its October 14, 2026, announcement that the money-transmission infrastructure associated with the service covered 48 U.S. states, based on 37 state-level money-transmitter licenses and 11 applicable exemptions. It added that the activity is registered with the U.S. Financial Crimes Enforcement Network as a money services business. In the same announcement, the company listed Kira among the early adopters of Open Money Stack, alongside Tazapay, Mesh and Toku, for applications including cross-border business payments, account funding, global payroll and access to the U.S. dollar. Polygon did not describe Kira as an early adopter of Solana support specifically. The company said Kira uses AI agents to provide U.S. banking and stablecoin services to fintech companies, over-the-counter trading desks and import brokers.
According to Polygon, Kira opens accounts within 72 hours of receiving a client’s documents, and 9 out of 10 payments are approved on first review. The company provided these figures in its description of Kira’s services when it announced the Open Money Stack adoption on October 14. The addition of Solana to the infrastructure follows Polygon’s September 29 announcement that the cumulative value of stablecoin transfers on Polygon Chain had exceeded $3 trillion since September 2020. That figure concerns transfers on Polygon Chain through the announcement date and does not represent transaction volume resulting from Solana support. The service expansion therefore brings together a new payment flow on Solana and the U.S. money-transmission coverage announced by Polygon, alongside earlier institutional adoption that the company says includes Kira.