Brussels is weighing a rule that would go well beyond anything crypto exchanges have faced in Europe so far. On September 30, the EU's securities watchdog ESMA sent the European Commission a package of proposed changes to MiCA, the bloc's crypto law — and one line could hit the core business of every major exchange: a full ban on custodying or transferring stablecoins that never got MiCA approval, not just selling them.
The current setup is oddly inconsistent. MiCA already bars licensed platforms from offering unauthorized stablecoins to new EU buyers, which is why Binance pulled USDT from trading for European users back in 2025, and why Revolut dropped Tether's token for its customers in the summer of 2026. But a loophole survived: holding or moving a token doesn't count as 'offering it to the public,' so Binance, Coinbase, Kraken, Gemini and Bitstamp kept letting EU clients store USDT and withdraw it.
That's exactly the gap ESMA wants closed. The proposal would spell out in the law itself that custody, transfers, accepting the token as collateral, and conversion services by a licensed firm are all off the table for non-compliant stablecoins. For an ordinary user the difference is stark: right now you can still pull USDT off an EU exchange, but if the change goes through, licensed platforms won't be allowed to hold the token on a client's balance at all — leaving only self-custody or a move to offshore venues.
Stablecoins aren't the only subject of the letter. ESMA also wants the power to freeze assets over suspected market manipulation, tighter rules on crypto marketing by influencers, and a new licensable service specifically for accessing DeFi protocols. Still, the stablecoin clause is the one that would land hardest on the millions of Europeans currently holding USDT.
For now this is a recommendation, not law — the European Commission can adopt it in full, water it down, or shelve it. Tether still hasn't applied for a MiCA license three months on, and what's at stake is no longer just trading the token, but the basic right to legally hold it inside the EU at all.
