Polygon's Open Money Stack Adds Solana, Linking US Bank Rails to USDC, USDT and PYUSD Through One API

Polygon Labs' Open Money Stack (OMS) now supports Solana SOL$102.09+1.7%, the company said in a blog post on 29 October 2026. The stack is a single API that takes in money from bank transfers, cards and cash, holds it as stablecoins in wallets, routes it across chains and pays it back out to bank accounts, cards, cash locations or wallets. "Businesses on @solana can now take a customer from a bank payin to a stablecoin balance to a payout, all through one API," Polygon's official account posted at 13:02 UTC. Solana's own account followed a minute later: "Bank rails, wallets and conversion, connected to Solana through one integration."

The practical change is for fintechs, payment apps and marketplaces that run on Solana and want dollars in and out of bank accounts without holding US money transmitter licences themselves. "Every bank and fintech that wants to use crypto faces the same problem: connecting them to the accounts and payment systems its customers already use," Polygon co-founder Sandeep Nailwal said, as quoted by Decrypt. Polygon's answer is to sell those connections as one integration, backed by its own licences.

What Polygon's Open Money Stack does on Solana

Polygon's Open Money Stack lets a Solana business accept fiat, hold it as stablecoins, move it between chains and pay it out, all through one API. According to the Polygon blog, the Solana integration covers:

• deposits by bank transfer, card, cash or crypto, with conversion between fiat and crypto on Solana
• custodial or embedded wallets on Solana, with the same account features OMS already offers on EVM chains
• programmable rules for when and where money moves, which Polygon calls orchestration
• routing between Solana and Polygon, Ethereum, Tron, Base, Arbitrum or Optimism
• payouts to bank accounts, cards, cash locations or wallets

Polygon lists the supported assets as Circle USDC$1.000+0.1%'s USDC, Tether USDT$0.999+0.1%'s USDT, PayPal PYUSD$1.000+0.0%'s PYUSD, SOL and wrapped SOL. Polygon Labs CEO Marc Boiron gave the same four-part summary in his own post: deposit in fiat by bank transfer, card or cash; hold and earn in embedded or custodial wallets; route crypto to and from Solana; and pay out in fiat to bank accounts, cards and cash.

Coinme's licences in 48 US states sit underneath the Solana launch

The regulated part of OMS comes from Coinme, the US payments business Polygon bought. Polygon completed that acquisition on 14 October 2026, and said the business gives it coverage across 48 US states through 37 state money transmitter licences and 11 applicable exemptions, plus registration with FinCEN as a money services business. The wallet and cross-chain routing pieces come from Sequence, whose team announced its move to Polygon on 13 January 2026, bringing its enterprise wallets and the Trails routing engine.

The mechanism is the familiar one from card payments, where a small online shop takes cards through a processor's licences and bank relationships instead of becoming a bank. A Solana company using OMS relies on Polygon's licensed ramp infrastructure for the fiat legs, and the licensed footprint Polygon has stated is the United States. Solana itself gains no licences from the deal; the businesses building on it gain a licensed partner.

Kira, a cross-border payments firm and one of the first OMS customers Polygon named in October, is the named early user on Solana. "We already use Solana to move stablecoins, and working with Polygon helps us turn those transfers into dollars in our clients' bank accounts when they need to pay suppliers," Kira CEO Edrizio De La Cruz told The Block.

Tron first, then Solana: OMS adds a second non-EVM stablecoin network

Solana is the second non-EVM network added to OMS in October 2026, three weeks after Tron. Polygon brought Tron in through a press release dated 7 October 2026, in which Boiron called Tron "one of the deepest pools of USDT liquidity." With Solana, the stack picks up a network where USDC, USDT and PYUSD all circulate. On Solana, USDC sits in more than 9.7 million holder accounts with about 7.5 billion tokens in supply, according to Solana Compass token data on 29 October 2026. The same data counts more than 3.1 million USDT holder accounts and more than 61,000 for PYUSD. These figures count token accounts, not people.

Polygon sells the money movement and leaves the choice of chain to its customers. "Moving all money onchain was always going to take more than one chain," Nailwal wrote on X, opening with a nod to the two ecosystems' history: "If you'd told me six years ago I'd be encouraging people to use Solana for payments, I probably would've started an argument with you." The launch followed teaser posts from Polygon's account on 27 and 28 October 2026, and Nailwal's 28 October post that "Polygon and Solana had lore." Polygon has a commercial reason to stay chain-neutral, since every network it adds widens the market for its API.

On the Solana side, Solana Foundation Chief Product Officer Vibhu Norby framed OMS as one option among several. Norby told The Block that Solana had processed more than $5.5 trillion in stablecoin volume in 2026, and said OMS "provides another path for businesses," complementing payment infrastructure already on Solana.

Solana businesses already have other routes between bank accounts and stablecoins. Column N.A., a US bank, launched stablecoin rails with Solana as its default chain in September, and Ramp opened stablecoin accounts to its business customers with Solana among seven networks in July. OMS differs in packaging: one vendor covers pay-ins, wallets, cross-chain routing and payouts across Solana, Tron and five EVM chains.

OMS pricing, access and non-US payouts remain undisclosed

Polygon's announcement gives no pricing or fee schedule, and access runs through "Request a Demo" and "Talk to Sales" buttons, so OMS on Solana is sold through Polygon's sales team. The licensed fiat coverage Polygon describes is the 48 US states, and the announcement does not list non-US payout countries or currencies for Solana businesses. Custody terms for the custodial wallet option are not detailed in the announcement either.

For Solana builders, the draw is the last mile. Kira already moves stablecoins on Solana and now uses Polygon to turn them into dollars in its clients' bank accounts. OMS offers companies like Kira that step without a separate licensing project, while the stablecoin settlement stays on Solana.