Woofun AI reports that the Markets in Crypto-Assets Regulation (MiCA) transition period concluded with a significant expansion in the euro stablecoin sector, as payments infrastructure firm Decta recorded a 128% growth in the market capitalization of compliant assets during the preceding year.

The quantitative shift was substantial across multiple metrics. By June 28, 2026, the combined market capitalization of eight MiCA-compliant euro stablecoins had climbed to $673.9 million, a sharp increase from the $295.6 million recorded on June 30, 2025. Trading activity mirrored this expansion, with volume rising 43.1% to reach $67.3 million, up from $47 million in the prior period. The scope of the compliant market also widened, as the number of tracked tokens increased from five to eight. Decta’s methodology focused exclusively on tokens that were actively issuing and maintaining measurable market capitalization and trading volume throughout the study period. This selective tracking contrasts with the broader interim register maintained by the European Securities and Markets Authority, which includes tokens that may not meet Decta’s specific activity criteria.

Woofun AI data shows that despite this growth, the euro-denominated segment remains marginal within the global stablecoin landscape. CoinGecko data indicates that US dollar-pegged stablecoins command a market capitalization of approximately $300 billion. In comparison, the combined value of Decta’s eight actively traded, MiCA-compliant euro stablecoins represented merely 0.22% of the dollar stablecoin market. The regulatory timeline further contextualizes this disparity; from July 1, firms offering crypto-asset services in the European Union were generally required to hold MiCA authorization. Decta’s data sample concludes just days before the final deadline for the crypto-asset service provider (CASP) transition period, capturing the market state at the precipice of full regulatory enforcement.

The data has fueled a contentious debate among policymakers and industry groups regarding whether MiCA’s stricter stablecoin rules are fostering ecosystem growth or stifling competitiveness against dollar-backed alternatives. On April 27, a report by Blockchain for Europe argued that while MiCA enhanced safety, it rendered euro stablecoins commercially weaker. The analysis highlighted that stringent reserve requirements and the prohibition on interest payments placed euro tokens at a distinct disadvantage. The discourse intensified in May when the Brussels-based think tank Bruegel published a policy paper advocating for eased liquidity requirements for stablecoin issuers. Bruegel further suggested that granting issuers access to European Central Bank funding could level the playing field against dollar-backed tokens.

However, the European Central Bank (ECB) issued a stark rebuttal to these proposals. On May 23, the ECB warned EU finance ministers that expanding the issuance of euro stablecoins could undermine bank lending and complicate the execution of monetary policy. The central bank also dismissed arguments that stricter EU regulations would accelerate digital dollarization, maintaining that current safeguards are sufficient to protect the integrity of the euro area’s financial system.