Stablecoin supply has barely moved this year, but the money already circulating through the tokens' networks is busier than ever, changing hands in more payments than at any point in the sector's history.

The total value of stablecoins outstanding rose just 0.4% to $305 billion in the first nine months of 2026, according to blockchain data firm Allium. Over the same period, payments involving those tokens climbed 45% to $482 billion, while the number of transactions jumped 71% to 1.04 billion.

Circle, the issuer of USDC, the second-largest stablecoin behind Tether's USDT, reported a similar split in its third-quarter results on Wednesday. USDC's circulating supply ended September at $73.9 billion, unchanged from a year earlier, even as on-chain transaction volume surged 49% to $13.9 trillion.

"Balances were flat, but usage continues to grow," Circle CEO Jeremy Allaire said on the company's earnings call. The transfer figure, however, includes trading and other blockchain activity and should not be confused with payments to businesses or consumers.

The divergence has complicated expectations for an industry that entered 2026 anticipating rapid expansion. Because market capitalization serves as the sector's headline growth gauge, the stall has pushed issuers and analysts to argue their case with usage data instead.

Big forecasts meet a flat market

At the start of the year, stablecoins — digital tokens with values pegged to fiat currencies such as the U.S. dollar — looked like a sure bet. Their supply had just grown about 50% in 2025, and the industry believed the run would continue. SharpLink CEO Joseph Chalom predicted a $500 billion stablecoin market by the end of 2026. Solana co-founder Anatoly Yakovenko went further, saying the market could top $1 trillion with increasing adoption in both real-world use cases and trading.

Fast forward to today: supply hasn't budged. Outstanding stablecoin balances have been stuck between $300 billion and $320 billion over the past 12 months. Standard Chartered also recently pushed its forecast for a $2 trillion stablecoin market to 2030 from 2028, citing slower growth in supply.

Yet analysts and stablecoin executives say the flat market capitalization doesn't necessarily mean adoption has stalled. It may instead reflect a shift in how the tokens are used: fewer dollars being added for cryptocurrency trading, even as existing balances facilitate more payments.

Stablecoin supply measures the dollar value of tokens outstanding, not how often they are used. As a result, growing payment activity doesn't automatically require an equivalent increase in issuance.

"Stablecoin supply tells us how much is outstanding, but not necessarily how actively it is being used," said Tianwei Liu, CEO and co-founder of StraitsX, a Singapore-based firm that issues the XSGD and XUSD stablecoins and runs card programs that let people spend stablecoin balances on everyday purchases.

Not every transfer is a payment

There is a caveat to the transaction numbers. Blockchains record the movement of tokens, but not every transfer represents a customer paying a merchant, a business settling an invoice, or money moving between unrelated parties.

Allium counted $97.9 trillion in raw stablecoin transfers in the first nine months of the year. Only $482 billion of that — about 0.5% — was payments.

The figures show why eye-catching blockchain volume numbers may exaggerate the extent to which stablecoins are used in the wider economy. They also show that measured payments are growing from a much smaller base than the raw data suggests.

"I would be cautious about this argument as it is commonly made. It generally relies on raw transfer volume, which includes exchanges moving their own funds between wallets and automated activity recycling the same dollars repeatedly," ARP Digital's Kanoo said.

The Bank for International Settlements made the same point in its June working paper, which found that treating every stablecoin transfer as a standalone payment misclassified almost six in 10 transfer events, overstating both counts and volumes.

AI agents won't fill the gap either

One payment use that has drawn plenty of attention this year is agentic payments, where AI software shops or pays for goods and services on a user's behalf. It is often pitched as a natural fit for stablecoins, but experts say agents, too, will add transactions rather than stablecoin supply.

"Agent balances are small, capped and designed to turn over quickly. Agentic commerce will generate transaction counts rather than float, and anyone expecting it to lift market capitalization has the relationship the wrong way round," Kanoo said.

Aurora Labs CEO Declan Hannon said an AI agent paying just in time won't maintain a balance for long — it funds the purchase, pays, and is done. "So even when agentic payments work, they'll show up in volume long before they show up in supply," he said.

Early deployments show why. On Oct. 26, Stripe's Link began rolling out USDC-funded balances that allow eligible U.S. users of the Instinct shopping agent to make purchases without approving each checkout. When the agent buys something, Link turns that balance into a single-use virtual card, issued through Stripe's card-issuing service, so the merchant receives an ordinary card payment. The stablecoin funds the agent, and the card does the paying.

A purer version runs on x402, an open protocol developed by Coinbase that lets AI agents pay websites and services directly in stablecoins, without a card.

Even as agent payments multiply, the money involved stays tiny. Allium counted 68.3 million agent payments in the third quarter, double the previous quarter, worth just $3.7 million in total — about 5 cents per payment.

Why so small? Builders say moving the money is the easy part; the hard part is everything around it.

"Moving money onchain is becoming easier. The bigger challenge for agentic payments is establishing the trust and controls. Before businesses can adopt agentic payments at scale, they need clarity on who authorizes an agent to spend, what limits apply, and who is accountable if something goes wrong," Liu said.

Hannon said crypto still lacks the safeguards card networks took decades to build. "Refunds, disputes, accounting, getting money back into a bank account. Card networks spent decades building that layer. Crypto has mostly built the rail," he said.

Cost is another hurdle. Network fees and compliance checks don't shrink with the size of a payment, which hurts most when the payment is a few cents.

"On a $10 million trade, those costs are a rounding error. On a $50 purchase, they can wipe out the savings that were the point of using stablecoins in the first place," Kanoo said. "Payment-focused chains and protocols like x402 are bringing those costs down, and as compliance and wallet infrastructure catch up, retail and agentic adoption will follow."

Even then, the experts say, agents will mostly add more payments rather than more stablecoins.

Why supply stalled

Most stablecoins are minted to fund crypto trades and to serve as collateral in derivatives trading and decentralized finance. So when interest in trading drops, demand for new stablecoins falls — and that is what happened this year.

"With trading volumes down more than 50%, the reduction in demand for trading-related stablecoin liquidity has had a meaningful impact on net issuance. I would expect some of this demand to recover as market participation and trading activity improve," Howard said.

Standard Chartered's Kendrick sees it the same way. "We believe this sideways movement is cyclical rather than structural," he wrote, noting that past periods of flat or falling supply ended once crypto markets recovered.

This downturn has also looked very different from the last one. Stablecoin supply has slipped about 5% from its May record of $322.4 billion, even as bitcoin, at one point early this year, was down more than 50% from its October 2025 peak. In the 2022 bear market, the market capitalization of major stablecoins fell 26%, from about $166 billion in March 2022 to $122 billion by September 2023, according to RWA.xyz, a platform that tracks tokenized real-world assets.

"In 2022, supply contracted by roughly a quarter when prices fell, because the balances were sitting on exchanges waiting to be deployed. The fact that they have largely stayed this time suggests a considerable share of the float is now held for purposes that have nothing to do with the next trade," Kanoo said.

Circle's latest figures also illustrate how substantial flows can leave outstanding supply little changed. During the third quarter, the company reported minting $104 billion of USDC and redeeming another $104 billion. The newly created tokens were roughly offset by those returned to the issuer, leaving little net issuance despite $208 billion in combined activity.

Still, the shift from trading to payments hasn't been large enough to replace all the demand that has disappeared.

"Payments growth hasn't yet been large enough to make up for lower trading demand," Yang said.

The second reason is yield — and unlike trading, it won't reverse when prices recover. Three-month Treasury bills yield around 4.1%, which makes a token that pays nothing costly to hold. The GENIUS Act, the U.S. stablecoin law that bars issuers from paying interest to holders, takes effect in January 2027.

"GENIUS did not kill yield. It moved it one layer up," said Jason Dehni, co-founder and CEO of BlackOpal, which offers asset-backed finance in emerging markets. "The issuer cannot pay you, so the application does, and that is why tokenized Treasuries and credit vaults kept growing through a year when supply flatlined," he added.

Tokenized Treasuries — blockchain representations of government debt — and credit vaults, on-chain pools that lend deposited funds to borrowers, operate in exactly that layer above the tokens themselves.

For now, growing payment activity hasn't been enough to offset weaker demand for stablecoins used in trading. The result is a market in which transactions are multiplying even as the amount of money held in the tokens barely changes. How that gap evolves will show up first in net issuance, in payments' share of raw on-chain transfers, and in the average size of an agentic payment.

For Aurora Labs' Hannon, the apparent contradiction comes down to two businesses moving in different directions.

"What's worth separating out is that the flat line is the trading side going quiet. It isn't the payments side failing. Those are two different businesses sharing one chart," he said.