The European Securities and Markets Authority, known as ESMA, told licensed crypto firms on 8 October to stop offering stablecoins that no European regulator has approved, and gave them three months to clear the positions already sitting on their platforms. ESMA coordinates how the bloc's national financial supervisors police markets, and the document it published is an opinion addressed to those supervisors rather than a rule written for companies.
Stablecoins are designed to hold a fixed value, usually one dollar or one euro, and they carry the bulk of trading on crypto exchanges because traders park money in them between positions. Europe's crypto rulebook, the Markets in Crypto-Assets Regulation or MiCA, requires the issuer of such a token to hold a licence from an EU regulator and to file a disclosure document with it before any platform lists the token.
ESMA's position is that firms "should not provide crypto-asset services in relation to" tokens that meet neither condition. It listed the services that fall inside the restriction, from running a trading venue and exchanging tokens to executing orders, advising clients, transferring tokens, holding them in custody and managing portfolios.
ESMA Rules Out Risk Warnings
Most platforms had settled on keeping an unapproved token available alongside a risk warning and a signed client acknowledgement, and ESMA has now ruled that arrangement insufficient. Firms should instead build controls that stop clients acquiring or increasing a position in such a token, the opinion says, using technical, contractual and organisational means.
National regulators may allow what ESMA calls strictly limited residual services while a platform winds down, covering the liquidation, conversion, withdrawal, transfer or safekeeping of holdings a client already has. Those arrangements must be sell-only, time-limited, clearly communicated and closely supervised, ESMA says, and they cannot be used to promote a token or keep it visibly on sale.
Someone holding USDT in a wallet of their own sits outside the opinion's reach, because the duty falls on licensed firms rather than on the people who own the tokens. ESMA set no date by which a private holder must sell, and the document says nothing about clients outside the bloc.
Why Tether Sits Outside
An e-money token under MiCA tracks one official currency, and its issuer must be an authorised European bank or electronic money institution. An asset-referenced token tracks something else, such as a basket of currencies or commodities, and it carries heavier reserve and governance requirements.
Tether, the largest stablecoin issuer in the world, holds no European e-money licence and has filed no MiCA disclosure document for USDT, which leaves the token unapproved across the bloc. Circle took the opposite route when its French subsidiary registered as an electronic money institution and filed disclosure documents on 1 July 2024 for the dollar-pegged USDC and the euro-denominated EURC, so European platforms may still list both.
Trackers that compile the register of filed documents count around 50 approved e-money tokens from 25 issuers across 14 countries, against dozens of widely traded tokens whose status is either restricted or unclear. PayPal's PYUSD, the third-largest stablecoin in the world, also has no EU authorisation, and no European entity issues it.
Paolo Ardoino, who runs Tether, has argued for years that MiCA's reserve rules are the problem rather than the solution. He has said the requirement for a large share of reserves to sit in European bank deposits is "actually creating an incredibly big systemic risk". His evidence is the collapse of Silicon Valley Bank, which he cites as proof that bank deposits carry risks of their own. Circle asked the European Commission a week before the opinion to replace the fixed bank-deposit minimum with a looser liquidity test.
The 2025 Delistings Came First
Kraken, Binance and Crypto.com had already removed USDT for European customers in early 2025, after ESMA's first statement on the subject that January. Kraken dropped five tokens for clients in the European Economic Area and converted the remaining balances on 31 March, and Binance pulled nine trading pairs on the same date.
Custody and transfers escaped that round, and closing them is what the October opinion does. Both now sit inside the services a supervisor is expected to review, which removes the arrangement several platforms had used to keep unapproved tokens on their systems without trading them.
Two economists who studied the first round, Nicola Borri and Kirill Shakhnov, published figures in July 2026 showing USDC's share of combined USDT and USDC trading rising from 17.70% to 18.24% around the 31 March deadline. USDT trading ran about 20% lower across venues worldwide, while USDC volumes held steady.
Grandfathering under MiCA ran out on 1 July 2026, which had already shut unlicensed firms out of the European market before this opinion appeared. Revolut finished removing USDT for its customers on 31 August 2026, and Coinbase and Binance had tightened access for clients in the European Economic Area as the July date approached.
USDT's position outside Europe has barely shifted through all of this. DefiLlama data recorded the token at 57.96% of the global stablecoin market in April 2026, down from 60.46% a year earlier, with USDC second on $78.621B.
The euro stablecoins the rules favour remain a small corner of that market. Token Terminal counted $827.5M of them in the third quarter of 2026 against $298.2B in stablecoins worldwide, a share of roughly 0.28%, with Circle's EURC holding most of it.
How The Rule Gets Enforced
Nothing in the document sets a penalty, and ESMA conceded in its 2025 statement that neither it nor national authorities hold "any formal power to disapply a directly applicable EU legal text". Enforcement runs through the national regulators, who assess firms, require controls and set remediation, while ESMA says it will monitor how quickly the opinion is applied.
Fines come instead from MiCA's own penalty article, which obliges member states to give their regulators the power to impose them. A company faces a ceiling of at least €5M for the relevant breaches, or a share of annual turnover where that works out higher, and an individual faces at least €700,000 plus twice any profit gained. Member states may set higher levels than those floors.
Europe took the same approach with connected devices, legislating first and leaving manufacturers to work out what compliance required in practice. The crypto deadline, though, is a calculation rather than a date ESMA wrote down: the three months run from publication, and several outlets have put the end of them at 8 January 2027.
A Deadline ESMA Did Not Write
Tether and Circle said nothing publicly about the opinion in the days after it appeared, and no exchange or industry body responded either. ESMA's own announcement carried no quote from its chair or any official, listing only a press officer, so every account of the document so far rests on the text itself.
What the opinion fixes is which services a European platform may offer around a token nobody in Europe has licensed. Where the affected holders take their money next sits outside it.
