USDC Surpasses Tether in Euro Trading Volume Following MiCA Shift

Circle's $USDC has flipped Tether's $USDT to lead euro-denominated stablecoin trading, capturing 56% of market volume following regulatory constraints imposed under the European Union's Markets in Crypto-Assets (MiCA) framework ¹.

Data published by market analytics firm Kaiko indicates that USDC's share of euro trading rose from 10% in January 2024 to its current majority ¹. Euro-denominated liquidity also migrated, with USDC order books recording depths roughly 40% deeper than those of USDT ¹. The divergence gained momentum after digital asset exchanges curbed USDT access for European Economic Area residents to align with MiCA mandates, even as Tether maintains a global circulation approximately 2.5 times larger than USDC ¹. Kaiko highlighted these fiat-to-stablecoin pairs as a primary channel for European investors moving capital in and out of digital assets ¹. This transition mirrors ongoing structural debates around asset compliance examined in the USDT vs USDC landscape.

Supervisory Oversight and US Regulatory Parallels

The market shift follows a regulatory milestone two weeks prior, when the European Banking Authority formally designated USDC as the European Union's inaugural "significant e-money token" ¹. That classification places Circle under direct EBA oversight and introduces elevated regulatory mandates ¹.

Cross-border market dynamics may face similar realignments in North America under the GENIUS Act, Kaiko noted ¹. On Oct. 21, the Office of the Comptroller of the Currency issued its inaugural final framework under that statute, setting reserve and redemption mandates for regulated stablecoin issuers ¹. Those OCC rules take effect on Jan. 18, 2027, ahead of July 2028 statutory restrictions that will bar US trading platforms from listing stablecoins lacking statutory authorization ¹. While Circle has pursued direct compliance across both jurisdictions, Tether has opted to target the market by establishing a dedicated vehicle, USAT ¹.