Key takeaways
- Both regimes require full backing, a right to redeem, and a ban on paying holders interest for simply holding the token. They differ most on who may issue, how reserves are held, who supervises, and how foreign issuers are treated.
- The GENIUS Act was signed July 18, 2025 and takes effect on the earlier of 18 months after enactment or 120 days after final implementing rules. The Fed proposed its rules September 24, 2026.
- MiCA's stablecoin rules have applied since June 2024. On October 8, 2026, ESMA told authorized EU platforms to stop serving non-compliant stablecoins within three months.
- Commentators describe MiCA as more restrictive on who can issue and the GENIUS Act as comparatively flexible, with tiers of eligible issuers. Neither description settles which regime is better; they reflect different priorities.
| Aspect | GENIUS Act (U.S.) | MiCA (EU) |
|---|---|---|
| What it covers | “Payment stablecoins.” Under the Act these are neither securities nor commodities, so they sit outside SEC and CFTC jurisdiction. | E-money tokens (EMTs), which reference one official currency, and asset-referenced tokens (ARTs), which reference other assets or baskets. |
| Who may issue | Permitted issuers only: subsidiaries of insured banks, federal qualified issuers approved by the OCC, and state qualified issuers under certified state regimes. | For EMTs, only credit institutions or electronic money institutions authorized in the EU (Art. 48). |
| Reserves | At least 1:1 backing in permitted assets such as U.S. currency, demand deposits at insured institutions, and Treasury securities of 93 days or less. Reserves cannot be rehypothecated. | For EMTs, at least 30% of funds held in separate bank accounts and the rest in low-risk assets in the same currency (Art. 54). |
| Redemption | Issuers must publish redemption terms and redeem on request. The Fed's proposal would require redemption within two business days. | Holders have a claim on the issuer and can redeem at face value on request, typically without fees (Art. 49). |
| Interest to holders | Issuers may not pay interest or yield to holders solely for holding the stablecoin. | Issuers and crypto-asset service providers may not grant interest, and any benefit tied to how long a token is held counts as interest (Art. 50). |
| Disclosure | Monthly reserve reports with third-party review and CEO and CFO certification. | A white paper notified to the authority at least 20 working days before publication, with no prior approval, and issuer liability for misleading content (Arts. 51-52). |
| Who supervises | Federal banking regulators such as the OCC, FDIC and Federal Reserve, plus state regulators for state qualified issuers. Issuers above $10 billion outstanding move to joint federal-state oversight. | One national competent authority per member state. The EBA takes over supervision of EMTs classified as significant (Arts. 56-58). |
| Foreign issuers | May register with the OCC if their home country has a comparable regime, and must meet operational requirements such as U.S.-based reserves. | Foreign entities offering tokens to EU persons must have an EU entity and comply with MiCA. Authorized platforms must not serve non-compliant tokens (ESMA opinion, Oct. 8, 2026). |
| Timing | Signed July 18, 2025. Effective the earlier of 18 months after enactment or 120 days after final rules. Rules still in the proposal stage. | Stablecoin rules have applied since June 2024. ESMA's three-month wind-down for non-compliant tokens ends around January 8, 2027. |
Sources: Fenwick's summary of the GENIUS Act; Lindemann Law's article-by-article summary of MiCA's e-money token rules; Mondaq's comparison of the two regimes; Georgetown Journal of International Law blog; ChainBrief reporting on the Fed's proposal and ESMA's opinion. Check the statutes for the authoritative text.
Where the two regimes agree
Both treat a stablecoin as a promise to hand back money, and both write that promise into law. A holder is supposed to be able to redeem at par, the issuer is supposed to hold matching assets, and the issuer is not supposed to pay holders interest for simply holding the token. Those three ideas, backing, redemption and no yield, are the core of both rulebooks. The Georgetown Journal of International Law blog describes MiCA's e-money token rules as the closest match to the GENIUS Act's treatment of payment stablecoins.
Where they differ most
Who can issue. MiCA channels dollar- and euro-pegged tokens through banks and electronic money institutions. The GENIUS Act has three doors: bank subsidiaries, federally approved non-bank issuers, and state-regulated issuers under a certified regime, with a $10 billion threshold above which a state issuer moves toward federal oversight. The Georgetown blog calls MiCA and Japan more restrictive on issuer eligibility and the GENIUS Act comparatively flexible, while noting it still imposes tiers.
How reserves are held. MiCA requires at least 30% of funds from token sales to sit in separate bank accounts, with the rest in low-risk assets. The GENIUS Act instead lists the assets that count as reserves and requires at least one dollar of them for each dollar of stablecoin. The practical result is different kinds of risk: MiCA ties a portion of reserves to bank balances, while the U.S. regime leans on short-dated Treasuries and similar assets.
Who supervises. The EU concentrates supervision in one national authority per country and shifts large tokens to the EBA. The U.S. splits it among federal banking regulators and states. Our profiles of the OCC and the Federal Reserve explain the U.S. side.
Foreign issuers. Both regimes try to keep non-compliant stablecoins from reaching local users, in different ways. The GENIUS Act lets foreign issuers register with the OCC if their home regime is comparable. In the EU, the lever is the platform: ESMA's opinion told authorized crypto-asset service providers to stop serving non-compliant tokens, as we reported in our coverage of the three-month deadline.
What is still unsettled
The GENIUS Act's operating details are not final. The Fed's September 24 proposal would set tiered capital charges and a two-business-day redemption window, and it has a comment period before anything is final (see our report on the proposal). State regimes must be certified as substantially similar to the federal standard, and critics worry that standards could diverge between states. On the EU side, the effect of the ESMA deadline will depend on how national regulators enforce it. This page will be updated as those pieces move.
How to use this comparison
If you are trying to understand why one stablecoin is available on a European platform and another is not, start with issuer authorization: MiCA asks whether the issuer is an authorized EU entity, and the platform's licence depends on it. If you are trying to understand what the U.S. rules will change, start with the three issuer categories and the reserve list. For the wider EU picture, see our MiCA explainer. For definitions, see our glossary entries on stablecoins and the GENIUS Act. This is general information, not legal or investment advice.
Frequently asked
Is a stablecoin that follows MiCA automatically allowed in the U.S.?
No. The GENIUS Act sets its own issuer categories and reserve rules. A foreign issuer may register with the OCC if its home country has a comparable regime and it meets operational requirements, but being compliant in one jurisdiction does not make a token compliant in the other.
Can a stablecoin issuer pay interest under either regime?
Under both, the issuer may not pay holders interest or yield solely for holding the token. MiCA's ban extends to crypto-asset service providers and treats any benefit tied to holding time as interest. How the U.S. rules apply to third parties such as platforms is a question to check against the final regulations.
Which regime is stricter?
It depends on the dimension. Commentators describe MiCA as more restrictive about who may issue and the GENIUS Act as more flexible on that point, while the GENIUS Act's reserve list and monthly certification are detailed. We do not rank them.
Further reading
- Fenwick: Congress enacts comprehensive stablecoin legislation (GENIUS Act key provisions)
- Lindemann Law: Regulation of e-money tokens under MiCAR
- Georgetown Journal of International Law: Reserve standards vs. issuer restrictions
- ChainBrief: The Fed just wrote the actual rulebook for stablecoins
More comparisons: SEC vs. CFTC · Trust vs. bank charter vs. state license · Spot ETF vs. staking ETF · Hardware vs. software vs. custodial wallets · All comparisons · Glossary