TL;DR
The EU’s Markets in Crypto-Assets regulation (MiCA) became applicable to stablecoins on 30 June 2024 and to most other crypto-asset services on 30 December 2024. The regulation distinguishes between “e-money tokens” (single-fiat stablecoins like USDC and EURC) and “asset-referenced tokens” (multi-asset baskets). It imposes reserve, governance and disclosure requirements on issuers, caps transaction volumes for non-EUR stablecoins used as a medium of exchange, and effectively bars unauthorized issuers from EU exchange listings. The most visible market effect was Tether (USDT) delisting from several EU venues in early 2025, while Circle obtained an Electronic Money Institution authorization to issue USDC and EURC under the regulation.
What MiCA actually requires
MiCA’s stablecoin chapter (Title III for ARTs, Title IV for EMTs) imposes three core requirements on issuers. Authorization: e-money token issuers must be a credit institution or an authorized Electronic Money Institution; asset-referenced token issuers need a separate MiCA authorization granted by national competent authorities. Reserves: issuers must hold backing assets in segregated accounts at qualified credit institutions, with specified composition rules — at least 30 % of EMT reserves in bank deposits (60 % for “significant” tokens), with restrictions on Treasury bill maturity. Disclosure: issuers must publish a regulator-approved white paper, quarterly reserve reports, and ongoing complaint-handling procedures.
For non-EUR stablecoins used as a means of exchange within the EU, MiCA caps daily transaction volumes at 1 million transactions and €200 million per day. Exceeding these thresholds requires the issuer to stop new issuance for EU users — a provision aimed at preventing widespread substitution of euro-denominated payment instruments by foreign stablecoins.
What changed for USDC
Circle was the first major issuer to obtain MiCA authorization, registered in France as an Electronic Money Institution in mid-2024. USDC and EURC are both compliant EMTs under the regulation. Circle restructured its reserves to meet the deposit-composition rules, expanded its EU operations team, and continues to issue both tokens normally for EU-based users.
The practical consequence: USDC remains broadly accessible at EU venues, with EURC available as a fully-regulated EUR-pegged alternative that previously had little adoption. EURC issuance grew several-fold in 2024-2025 as EU-based applications began offering it alongside USDC.
What changed for USDT
Tether did not seek MiCA authorization, citing reserve composition incompatibilities (specifically the bank deposit requirements at large reserve sizes). As a result, by January 2025, MiCA-regulated CASPs — including major exchanges like Coinbase Europe, Crypto.com and Kraken’s EU entities — delisted USDT trading pairs for EU users. Binance restricted USDT availability for EEA customers and pushed FDUSD as the default.
USDT itself remains in circulation and accessible via non-MiCA venues, peer-to-peer transfers and self-custody wallets. The supply on Ethereum and Tron is unaffected. But the practical experience for an EU retail user has shifted: USDC and EURC are now the default stablecoins offered, and obtaining USDT requires more deliberate steps.
Asset-referenced tokens and the death of EU algorithmic stablecoins
MiCA’s asset-referenced token category — designed for stablecoins backed by baskets of assets — imposes much stricter requirements than EMTs: minimum capital requirements, frequent stress testing, and explicit restrictions on algorithmic mechanisms. The practical effect has been that algorithmic stablecoins are effectively prohibited from EU issuance, and no major asset-referenced stablecoin has obtained MiCA authorization to date.
DAI and other crypto-backed stablecoins exist in a regulatory gray area: MakerDAO/Sky is not an EU entity, DAI is not formally “issued” in a MiCA sense, but exchanges that list DAI for EU users must consider whether the listing constitutes facilitation of an unauthorized stablecoin.
Implications for the rest of the market
Three patterns emerge. First, regulatory clarity at the cost of issuer concentration: EU users primarily transact in stablecoins issued by entities that can pass MiCA scrutiny, which means USDC, EURC and a small number of regulated EUR stablecoins. Tether’s market share in the EU declined; Circle’s grew. Second, fragmentation between regulated and unregulated venues: the same stablecoin can be available on a non-MiCA DEX and unavailable on a MiCA-licensed centralized exchange. Third, influence beyond the EU: MiCA has become a reference template for other jurisdictions — Singapore’s MAS framework, the UK’s draft stablecoin regulations, and various Latin American proposals draw on MiCA’s structure.
What’s next
The European Banking Authority continues to publish technical standards refining MiCA’s implementation. The 2027 review will reassess transaction volume caps and consider whether the regulation needs updating for tokenized deposits and CBDCs, both of which were nascent in 2024 when MiCA was finalized. For non-EU users, MiCA mostly matters indirectly — as a precedent that other regulators copy.