The European Central Bank has drawn a line in the sand on euro stablecoins. At a meeting in Nicosia, Cyprus on May 22, ECB President Christine Lagarde and the Governing Council formally rejected proposals to relax regulatory constraints on euro-denominated stablecoin issuance, citing risks to banking stability and monetary policy transmission.
The decision lands at a moment when the global stablecoin market has swelled to roughly $300 billion in total supply, up one-third from 2025. Euro stablecoins, meanwhile, account for a grand total of 0.3% of that figure.
What the ECB is actually worried about
The core fear is disintermediation. If euro stablecoins become too easy and attractive to issue, money flows out of traditional bank deposits and into stablecoin reserves. Banks lose a critical funding source. The gears of monetary policy, which rely on banks transmitting rate changes through lending and deposit channels, start grinding.
The specific proposal the ECB shot down appears to stem from a February 2026 recommendation by Bruegel, the Brussels-based economic think tank, which suggested reducing the 30% reserve requirement currently imposed on euro stablecoins under MiCAR, the EU’s Markets in Crypto-Assets Regulation framework that has governed stablecoins since 2024.
