The GENIUS Act, signed into U.S. federal law on July 18, 2025, sets the first binding federal framework for payment stablecoins and triggers two deadlines that matter for any business handling digital dollars: a June 9, 2026 public comment window on the joint FinCEN-OFAC anti-money-laundering proposal, and implementing rules that take full effect on July 18, 2026. According to CoinGecko data from May 2026, stablecoins now represent a market exceeding $240 billion, making this far from an American domestic story.
What the GENIUS Act Changes for Stablecoins
The GENIUS Act restricts payment stablecoin issuance to licensed entities whose reserves consist exclusively of cash, insured bank deposits, and short-dated U.S. government securities. A payment stablecoin is a dollar-pegged token designed for payments and settlement, not for yield. The Senate passed the bill 68 to 30 on June 17, 2025, with the law taking effect July 18, 2025. Issuers crossing the $10 billion market-cap threshold must transition to OCC federal oversight within 360 days or apply for an exemption. Direct interest payments from issuers to holders are prohibited outright. That prohibition sits at the center of every compliance debate currently happening on Wall Street and in Brussels.
The market scale is real. According to CoinGecko data from May 2026, total stablecoin supply exceeds $240 billion, with Tether's USDT holding above 67% market share and Circle's USDC at roughly 27%. The remainder splits between PayPal USD, DAI, and smaller issuers. SpazioCrypto has covered the full agency framework in a separate analysis of OCC, FDIC and FinCEN roles under the GENIUS Act.
GENIUS Act and MiCA: Two Regimes, One Operating Reality
Functionally, for any business straddling the U.S. and European markets, the question is not which framework to follow. Both apply simultaneously. MiCA has been operational across the EU since early 2025, and enforcement has sharpened considerably. In France, AMF chairwoman Marie-Anne Barbat-Layani gave roughly 90 unlicensed crypto firms until June 30, 2026 to regularize or exit, as SpazioCrypto reported in its coverage of crypto firms at risk of a regulatory blackout. Running GENIUS Act and MiCA compliance in parallel is now the practical baseline for any transatlantic operation.
Source: GENIUS Act; MiCA Regulation (EU) 2023/1114, June 2026
The full GENIUS Act text is available via the U.S. Treasury, which has also published the joint FinCEN-OFAC anti-money-laundering proposal. The EU reference document remains MiCA Regulation (EU) 2023/1114.
On the yield question, Coinbase CEO Brian Armstrong has weighed in repeatedly. His recent posts on X lay out the industry position on why prohibiting issuer-paid interest distorts competition between regulated stablecoins and money-market funds.
What U.S. and EU Businesses Must Watch Now
Two dates define the near-term calendar. June 9, 2026 is the deadline for submitting comments on the joint FinCEN-OFAC rulemaking, covering anti-money-laundering obligations for stablecoin issuers. Any business with exposure to USDT or USDC in cross-border transactions should review that proposal and consider filing. July 18, 2026 is when the full implementing ruleset takes effect. For large issuers already above the $10 billion threshold, the 360-day OCC transition clock is already running.
The Tether question remains the most watched variable. Tether, which according to CoinGecko held roughly 67% of total stablecoin supply as of May 2026, is domiciled outside the United States. Whether OFAC enforcement reach extends to foreign-domiciled issuers serving U.S. persons is one of the open questions the comment period is specifically designed to resolve. European firms using USDT for settlement should flag that uncertainty with their legal counsel before June 9.
For MiCA-licensed operators in the EU, the GENIUS Act creates a secondary compliance layer with no automatic equivalence recognition. A stablecoin that is compliant under MiCA as an e-money token is not automatically GENIUS Act-compliant, and vice versa. The two regimes share a structural logic around reserves and interest prohibition. Diverge on licensing pathways, supervision hierarchies, and enforcement triggers. Monitoring the OCC's guidance publications between now and July 18 is the clearest practical step for any transatlantic treasury or payments team.
