The European Securities and Markets Authority (ESMA) has submitted a policy response asking the European Commission to ban all licensed crypto-asset service provider (CASP) services—including custody and transfers—for stablecoins that fail to meet Markets in Crypto-Assets (MiCA) rules. Submitted on September 30, 2026, during the EU Commission's MiCA review, the proposal marks a significant tightening of the bloc's regulatory framework.
Shift From Previous MiCA Framework
The new submission departs from ESMA’s previous guidance issued on January 17, 2025. Under the earlier framework, platforms were required to halt trading pairs and public offerings for non-compliant tokens—leading to acquisition restrictions by late January 2025 and sell-only modes through Q1 2025—while allowing mere custody and withdrawals to continue. For instance, Binance announced plans in March 2025 to delist 9 non-compliant token trading pairs for European Economic Area (EEA) users by March 31, 2025, while maintaining deposit, withdrawal, and custody functionality.
ESMA's September 30, 2026 proposal replaces that activity-based model with a total asset-compliance test, arguing that service exceptions facilitate regulatory arbitrage and create disparities between compliant and non-compliant issuers. This expanded reach relies on MiCA Article 3 definitions of custody and transfer, alongside Article 59 authorization rules and Article 82 transfer requirements. Similar to how other global regulators are evaluating custody obligations for digital asset funds, ESMA asserts that provider permissions should not insulate non-compliant tokens from service-level restrictions.
Unresolved Exit Mechanics and Market Impact
The submission currently lacks an implementation timetable, transition window, or wind-down mechanism, creating legal questions around asset returns. Under MiCA Article 75 and a February 18, 2026 European Commission clarification, custodians must return client assets in kind unless the client specifically requests conversion into fiat or compliant crypto assets.
Academic research from July 2026 by Nicola Borri and Kirill Shakhnov—which analyzed daily USDT and USDC trading data across 14 top exchanges from January 1, 2024, to December 7, 2025—highlighted how trading volume can fragment between regulated-facing venues (such as Bitstamp, Coinbase, Gemini, and Kraken) and offshore platforms without altering broader market liquidity as stablecoin adoption continues globally.
Key Takeaways
- ESMA proposed prohibiting custody and transfer services for non-compliant stablecoins on September 30, 2026.
- The proposal removes the prior January 17, 2025 allowance that permitted holders to retain non-compliant stablecoins in licensed custody after delisting.
- Article 75 mandates prompt return of client assets, creating operational friction if custodians cannot hold or transfer non-compliant tokens.
- Academic data from Nicola Borri and Kirill Shakhnov shows regulated venues face distinct trading shifts compared to global venues.
Why It Matters
If the European Commission adopts ESMA's recommendation into law, European crypto service providers will no longer act as passive safekeepers for non-compliant tokens like Tether (USDT). This shift would effectively force EU-based retail and institutional investors to migrate capital into compliant alternatives or move holdings to self-custody wallets and unregulated offshore venues. Moreover, the lack of an explicit wind-down mechanism poses immediate operational hurdles for exchanges required under Article 75 to return customer assets in kind while simultaneously forbidden from processing their transfer.
