Solana's stablecoin supply hit a record $17.51 billion in September 2026, according to the Solana Foundation, and the chain drew several high-profile launches this year, including Open USD, Western Union's USDPT and MoneyGram's cash ramps. On Base, the official payment tools lead with USDC, and since the Beryl upgrade in June 2026 the chain has a native token standard, B20, with a dedicated stablecoin variant. If you create tokens, remember one date: under the GENIUS Act, issuing a payment stablecoin in the US without being a permitted issuer is unlawful from January 18, 2027 at the latest.

Key takeaways

  • Solana's stablecoin supply reached a record $17.51 billion in September 2026, per the Solana Foundation citing DefiLlama. Other trackers and other dates give different totals.
  • Open USD (OUSD) went live on Solana on September 30, 2026. Its founding partners are Coinbase, Mastercard, Shopify, Stripe and Visa. Origin Protocol's unrelated Origin Dollar uses the same OUSD ticker, so check the mint address.
  • Real payment rails run on both chains: MoneyGram, Visa, Mastercard and Western Union on Solana; the Commerce Payments Protocol and one-call USDC payments on Base.
  • Headline stablecoin volume is not the same as payments. Solana card payments were $262.7 million in Q3 2026 to date, against $37.51 billion in stablecoin loan volume in September alone.
  • The GENIUS Act applies no later than January 18, 2027. A community token should never be named or marketed as a stablecoin.

Stablecoins on Solana and Base at a glance

As of October 9, 2026.

Solana Base
Dollar stablecoins to know USDC, USDT, PYUSD, USDG, plus 2026 arrivals OUSD, USDPT and SoFiUSD USDC, the token Base's payment SDK and guides lead with
Payments and cash access MoneyGram Ramps, Visa and Mastercard stablecoin settlement, Solana Pay Commerce Payments Protocol, plus one-call USDC payments and subscriptions
Agent payments x402 and Solana Payment Channels x402 routes in Base's payment docs
Issuer tooling Token-2022, used by PayPal, Western Union and OUSD B20 Stablecoin variant (fixed 6 decimals, currency code), live since June 2026
Big non-payment use $37.51B stablecoin loan volume in September 2026 USDC lending guides for Morpho and Aave in Base's docs

Why supply numbers disagree

Even the Solana Foundation's own posts give different figures: $17 billion in March (citing Artemis), $16.4 billion in May, $16 billion in late July, a record $17.51 billion for September (citing DefiLlama) and $17.4 billion, up 18.8% year over year, in its September 30 OUSD post. Some of the gap is real money moving in and out. Some is method: trackers can differ in which tokens they count as stablecoins and on which day they take their snapshot.

So quote any figure with its source and date, and compare chains on the same tracker on the same day. DefiLlama's stablecoin dashboard, the source behind the Foundation's September figure, is a common choice.

Holders are growing too. Stablecoin-holding wallets on Solana reached 13.07 million in the last week of September 2026, up 16% from the start of the third quarter, per the Foundation's September roundup.

What is Open USD (OUSD)?

Open USD is a dollar stablecoin from Open Standard, issued by Bridge. Its five founding partners, Coinbase, Mastercard, Shopify, Stripe and Visa, took equal initial stakes and together committed more than $1 billion to its liquidity. Open Standard announced it on June 30, 2026, and it went live natively on Solana on September 30.

  • Free business minting. Businesses can mint and burn OUSD 1:1 for dollars at no cost.
  • Reserves and reporting. Reserves are held at BlackRock, Lead Bank and BNY, with monthly attestations published at reserves.bridge.xyz/ousd.
  • Native, not wrapped. On Solana it is issued directly as a Token-2022 token. There is no wrapped version.
  • Wide integration plans. As of its Solana launch, more than 200 companies planned to integrate it, including UBS, SBI Holdings and Jeeves, per the Solana Foundation.

Watch the ticker. Origin Protocol's Origin Dollar also uses the symbol OUSD. It is a separate, yield-earning dollar token with a rebasing supply, and it has nothing to do with Open USD. Same four letters, different issuer and design. The Open USD mint on Solana is ousd2mJsPEckLHcSCDxyKD7NDGARZcfLbDZkKiatYHB. If you want OUSD on Base or any other network, get the contract address from Open Standard or Bridge directly rather than searching by name.

New stablecoin issuers on Solana in 2026

Banks, payment companies and regional issuers launched stablecoins on Solana this year:

  • Western Union USDPT (May). A dollar stablecoin issued by Anchorage Digital Bank, N.A. Rollout began in initial markets and is expected to expand across Western Union's network through 2026. In August, Western Union added Stablecard, a digital wallet and Visa card powered by Rain that uses USDPT, in 37 markets.
  • SoFiUSD (late May). The Solana Foundation calls it the first stablecoin issued by a US national bank to be available directly inside a banking app, where SoFi's roughly 15 million members can buy, sell, hold and convert it.
  • Non-dollar stablecoins. The Korean won KRWQ (May), the Canadian dollar CADC via Paytrie (June), AllUnity's Swiss franc CHFAU (August), and Tetra's Canadian dollar CADD and Supercoin's South African rand ZARSC (both September) all arrived on Solana.

Payment rails people actually use

On Solana

  • MoneyGram Ramps (August 11, 2026). One API gives Solana apps cash deposits in more than 25 countries and withdrawals in more than 170 countries and territories, through a network MoneyGram puts at nearly half a million retail locations. Rift was the first wallet to integrate it.
  • Visa. Visa launched USDC settlement on Solana for US issuer and acquirer partners in December 2025, with Cross River Bank and Lead Bank as the first participants.
  • Mastercard (June 3, 2026). Mastercard added onchain settlement in regulated stablecoins, with Solana among the supported networks.
  • Solana Pay in Korea (July 2026). KSNET signed a memorandum of understanding to integrate Solana Pay across more than 330,000 merchants. That is a plan, not live coverage.

On Base

  • Commerce Payments Protocol. This MIT-licensed protocol mirrors card-style "authorize and capture": charge immediately, or hold funds in escrow and then capture, void or refund. Base's payment guides, rebuilt around the protocol in late September 2026, also cover payouts, splits and scheduled charges. Coinbase Protocol Security and Spearbit audited it.
  • One-call USDC payments. The Base Account SDK (@base-org/account) offers pay() for a single USDC payment and subscribe() for recurring USDC charges. Its README notes that Base Account is now called Coinbase Wallet; the package name has not changed. If you sell anything, check each payment on your server with getPaymentStatus(), passing the expected amount and recipient, before fulfilling the order.

Both chains also support x402, the standard for paying per request over HTTP, which matters for AI agents and paid APIs. Our x402 explainer covers it.

Payments vs. trading and lending

Big stablecoin volume numbers are not the same as payments. The Solana Foundation's September 2026 roundup shows the gap: $37.51 billion in stablecoin loan volume in September alone, against $262.7 million in Solana card payments for the whole third quarter to date. Its OUSD post adds that Solana processed more than $5 trillion in stablecoin volume in 2026, on a supply of about $17 billion. That works out to each dollar changing hands roughly 300 times in nine months. Card spending is a tiny share of that; the total also includes lending, trading and transfers between apps and exchanges.

Base's docs reflect the same split. They walk apps through supplying USDC to Morpho and Aave lending markets, right next to the checkout guides.

None of this makes the payment rails above less real. But when a headline says "billions in stablecoin payments," check whether it counts lending, trading and transfers.

US rules: the GENIUS Act timeline

The GENIUS Act (Public Law 119-27), signed on July 18, 2025, is the US law for payment stablecoins. It covers digital assets used for payment or settlement whose issuer must redeem them for a fixed amount of money and says it will keep their value stable. The dates that matter:

  1. Effective date. The law takes effect on the earlier of January 18, 2027 (18 months after enactment) or 120 days after federal regulators issue final implementing regulations. Either way, it applies no later than January 18, 2027.
  2. Issuer licensing. From the effective date, it is unlawful for anyone other than a permitted payment stablecoin issuer to issue a payment stablecoin in the US.
  3. Platforms. From July 18, 2028, exchanges and other digital asset service providers generally may not offer or sell payment stablecoins to people in the US unless a permitted issuer issued them, with limited exceptions.

Several federal regulators have to write implementing rules, so check the Federal Register for where they stand. This is a summary, not legal advice.

Can I create my own stablecoin on Solana or Base?

Technically, anyone can deploy a token called "SomethingUSD." Legally, a token used for payments whose issuer promises to redeem it at a fixed value is a payment stablecoin, and once the GENIUS Act applies, issuing one in the US requires being a permitted issuer.

A community or meme token is not a stablecoin. Don't put "USD" in its name, don't claim a peg and don't promise redemption. That can mislead buyers and invite regulatory trouble.

Base's B20 standard, live on mainnet since the Beryl upgrade on June 25, 2026, has a Stablecoin variant with decimals fixed at 6 and an immutable currency code such as USD, built for stablecoin issuers. Base's docs note that B20 checks only the code's format, not whether the currency is real. The standard gives you issuer controls, not a license. Our B20 vs ERC-20 guide explains it.

The same applies to launchers. Don't use any launcher, Solbase included, to create a token named or marketed as a stablecoin. Solbase is a non-custodial tool for community tokens: on Solana it creates an SPL token with Metaplex metadata and revokes mint authority by default, and on Base it deploys a fixed-supply ERC-20 with no owner and no mint function. You can launch one here on Solana or Base.

Using stablecoins with a new token

When you add liquidity for a new token, you'll usually pair it with the chain's native asset (SOL or ETH) or with a stablecoin such as USDC. Solbase mints the supply to your wallet but does not provide liquidity or list tokens, so any pool is something you set up yourself on a DEX.

Before you swap into a stablecoin or create a pool, check the address, not the name or logo. Anyone can create a token called USDC. The official addresses:

  • USDC on Solana: EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
  • USDC on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
  • Open USD on Solana: ousd2mJsPEckLHcSCDxyKD7NDGARZcfLbDZkKiatYHB

Cross-check new ones on the issuer's own site. Once you've confirmed the address, you can swap into it on Solana or Base.

FAQ

What is OUSD, and is it the same as Origin's OUSD?

Open USD is a dollar stablecoin issued by Bridge for Open Standard, whose founding partners are Coinbase, Mastercard, Shopify, Stripe and Visa. It went live on Solana on September 30, 2026. Origin Protocol's Origin Dollar is a separate, yield-earning token with the same OUSD ticker, so always check the mint or contract address.

Which chain has more stablecoins, Solana or Base?

Solana's stablecoin supply hit a record $17.51 billion in September 2026, per the Solana Foundation, with a wide mix of issuers, from USDC, USDT and PYUSD to newer arrivals such as USDPT and OUSD. Base's own payment tools center on USDC. For a fair side-by-side figure, check both chains on one tracker, such as DefiLlama, on the same day.

Can I pay in shops with stablecoins on Solana or Base?

Sometimes. On Solana, Solana Pay and stablecoin-backed Visa cards such as Western Union's Stablecard connect stablecoins to real spending, and MoneyGram Ramps turns them into cash. On Base, merchants can accept USDC through the Commerce Payments Protocol and the Base Account SDK. Acceptance depends on the merchant and your country.

When do the GENIUS Act rules apply?

No later than January 18, 2027, or 120 days after regulators issue final rules if that comes first. From then, issuing a payment stablecoin in the US requires being a permitted issuer. From July 18, 2028, platforms generally can't offer payment stablecoins from non-permitted issuers to US users.

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