ECB Holds Firm on Euro Stablecoin Reserve Rules, Cites Banking Risk

Euro stablecoins, such as Circle’s EURC, represent only 0.3 % of the roughly $300 billion global stablecoin market, translating to about $900 million in outstanding value. By contrast, the leading USD‑backed stablecoins USDC and USDT hold market caps of roughly $28 billion and $83 billion, respectively. The ECB’s stance comes as the EU’s Markets in Crypto‑Assets Regulation (MiCAR) already mandates that stablecoin issuers keep 30 % of reserves in banks, rising to 60 % for larger issuers.

At the informal ECB meeting in Nicosia, officials warned that lowering the bank‑reserve threshold would encourage disintermediation—moving deposits from banks into less‑regulated crypto venues. That shift would reduce bank funding bases, increase their borrowing costs, and tighten lending, thereby blunting the ECB’s ability to steer interest rates into the real economy. The ECB also noted that a run‑risk on multi‑issuer stablecoin platforms could amplify systemic stress.

The ECB’s decision reinforces the existing MiCAR framework and signals a preference for bank‑backed digital assets over pure‑crypto stablecoins. Market participants should watch two developments: the ECB’s digital euro, slated for a 2029 launch, and the planned 2026 debut of a euro stablecoin by the Qivalis bank consortium, which aligns with the ECB’s vision of bank‑issued solutions.