MiCA vs the GENIUS Act: Stablecoin Rules Compared

Why two of the world's biggest economies are writing stablecoin rules at the same time

Stablecoins are the plumbing of crypto. Most on-chain activity, from token swaps to payments to remittances, settles in USDT, USDC, or a handful of similar tokens pegged to a fiat currency. Total stablecoin supply has crossed multiple hundreds of billions of dollars, and issuers like Tether and Circle have balance sheets larger than some mid-sized banks.

For years, regulators treated stablecoins as either "not securities, so not our problem" or "e-money, so apply old rules and hope for the best." That approach ended in 2023, when the European Union's Markets in Crypto-Assets Regulation (MiCA) took effect, and again in 2025, when US lawmakers moved forward with the Guiding and Establishing National Innovation for US Stablecoins (GENIUS) Act.

Both frameworks try to answer the same questions. Who can issue a stablecoin? What must they hold in reserve? How do users find out what's actually backing the token? What happens if the issuer fails? But they answer those questions very differently, because they start from different legal traditions, different market structures, and different theories of what could go wrong.

What MiCA actually is, and where it applies

MiCA is a regulation, not a directive. In EU law that distinction matters: a regulation applies directly and identically across all member states the moment it takes effect, while a directive requires each country to translate it into national law. The "single rulebook" effect is why MiCA is enforced the same way in Berlin, Paris, and Madrid without 27 parallel interpretations.

Geographically, MiCA covers the EU's 27 member states plus the three EEA countries (Iceland, Liechtenstein, and Norway) that adopt EU single-market rules through their EEA agreement. The UK and Switzerland have their own regimes. The practical effect is that a stablecoin issuer who wants to serve European retail customers needs authorization from a national authority in one EU/EEA state, and once granted, that authorization "passports" to all the others.

That passporting right is one of MiCA's biggest commercial features. An issuer authorized by Germany's BaFin can serve customers in France, Italy, and Sweden without a second license. The trade-off is that to get the passport, the issuer must satisfy all of MiCA's rules, including the strict ones that follow.

What the GENIUS Act is, and where it applies

The GENIUS Act is a US federal statute. It would apply across all 50 states and US territories, but only to issuers of "payment stablecoins" that are distributed to US persons. It does not attempt to regulate the broader crypto market the way MiCA does, leaving most other digital assets to the SEC, CFTC, or existing money-transmission frameworks.

Where MiCA is one regulation with one passport, GENIUS creates a dual-track licensing system. An issuer can either obtain a federal license from the OCC (for bank affiliates) or a primary federal regulator like the FDIC, or pursue a state license in a state whose regime is approved as "substantially similar" to the federal standard. The bill sets the federal floor; states can set higher bars but cannot fall below it.

Passporting in the MiCA sense does not exist under GENIUS. A federal license lets you serve US customers nationwide, but it does not, by itself, give you any rights in Europe, the UK, or anywhere else. Issuers who want global reach must comply with both regimes, and the cost of that dual compliance is now a defining feature of the stablecoin market.

How MiCA classifies stablecoins

MiCA recognizes two categories of stablecoins, and the rules differ sharply between them.

The first category is asset-referenced tokens (ARTs). These are tokens that reference a basket of assets, currencies, or a combination. A token pegged to a weighted mix of the dollar, euro, and gold would be an ART. The second category is e-money tokens (EMTs). These are tokens that reference a single fiat currency, with the issuer obligated to redeem at par. A USDC-style dollar token is the textbook EMT.

The distinction matters because EMTs are essentially treated as electronic money, which means they must comply with the EU's existing e-money directive. Among other things, that requires:

• Authorization as a credit institution or e-money institution, not just a crypto registration.
• Reserves held in segregated accounts at one or more EU credit institutions.
• At least 30% of reserves backing "highly liquid financial instruments" with minimal market risk.
• Own funds equal to at least 2% of the average outstanding float.

ARTs get a separate rulebook that is in some ways more flexible (the basket can hold other things) but in other ways more demanding on disclosure and supervision. Either way, the issuer must publish a white paper, get approval from a national competent authority, and comply with ongoing reporting and governance requirements.

How the GENIUS Act treats payment stablecoins

The GENIUS Act uses a single category: the payment stablecoin, defined as a digital asset used as a means of payment or settlement, pegged to a fixed value, and backed by reserves. That definition sweeps in USDT and USDC but not, for example, a tokenized money-market fund share that yields interest.

The core requirements include:

• 1:1 reserves in US dollars or short-dated US Treasuries with maturities of 90 days or less.
• Monthly reserve attestations by a registered public accounting firm, with full audited statements annually.
• At least 1:1 liquidity, meaning reserves can be converted to cash within one business day to meet redemptions.
• No rehypothecation of reserves, which closes the door on lending out customer backing.
• AML/KYC and sanctions compliance consistent with the Bank Secrecy Act.

The Act also bars yield-bearing features on the underlying token. A stablecoin cannot pay interest to the holder, although it can pay service providers separately. That is a direct shot at models like Ethena's USDe synthetic dollar or any future "yield-bearing stablecoin" that promises to pass through treasury income to holders.

Issuers who choose the federal route must be either an insured depository institution subsidiary, a non-bank approved by the OCC, or a special-purpose entity that meets capital and governance standards. State regimes must be "substantially similar" to the federal standard, which over time will likely force a floor up across the US.

The risks for issuers, exchanges, and users

Both regimes reduce risk in different ways and create new risks in others. Anyone evaluating a stablecoin under the new rules should pay close attention to several failure modes that history has already demonstrated.

Reserve mismatch. The original TerraUSD collapse in 2022 was a reserve failure: the token claimed to be backed 1:1 by dollar assets but was actually backed by a volatile sister token. Both MiCA and GENIUS attempt to prevent this by mandating reserves that are low-risk, liquid, and regularly attested, but the historical track record of issuers like Tether has included periods when reserves included commercial paper, secured loans to affiliated entities, and other illiquid instruments. Monthly attestations are better than annual audits, but they are still snapshots.

Concentration risk. A handful of issuers, principally Tether (USDT) and Circle (USDC), dominate the market. If one of them fails, the contagion through crypto markets is immediate because so much on-chain liquidity is denominated in their tokens. Both regimes try to address this through redemption guarantees and capital buffers, but neither can stop a bank run if confidence evaporates faster than reserves can be liquidated.

De-pegging and frozen redemptions. USDC briefly lost its peg in March 2023 when about $3.3 billion of its reserves sat at Silicon Valley Bank. The peg recovered within days because Circle confirmed the funds were ultimately accessible, but the episode showed how fast liquidity can vanish when reserves sit at a single point of failure. Both regimes require diversification across depository institutions, but the threshold for "enough" is still a judgment call.

Sanctions and freezing risk. Tether has frozen hundreds of millions of dollars in USDT at the request of law enforcement. That is sometimes presented as a feature (compliance) and sometimes as a bug (centralization). Under GENIUS, freezing becomes a legal obligation tied to OFAC sanctions screening. Under MiCA, the issuer's governance and AML obligations effectively require the same.

Regulatory arbitrage failures. The single biggest practical risk is what we are already seeing: an issuer can be fully compliant in one jurisdiction and effectively unsellable in the other. USDT was delisted from major EU exchanges like Binance and Kraken once MiCA's EMT rules took full effect, because Tether does not hold an e-money license in any EU state. From a European user's perspective, USDT went from available to banned almost overnight. The same dynamic is likely in reverse if the GENIUS Act pushes USDT out of the US market.

How each regime treats USDT specifically

USDT is the test case for both frameworks, and the case study is not flattering.

Under MiCA, Tether's USDT falls squarely into the EMT category because it is pegged to a single fiat currency and offered to European users. To continue serving EU retail customers, Tether would need to be authorized as an e-money institution, hold segregated reserves at EU credit institutions, and meet the 30% highly-liquid-assets threshold and 2% own-funds requirement. Tether has not pursued that authorization. The result, observed in late 2024, is that major EU-licensed exchanges removed USDT from their platforms.

Under the GENIUS Act, USDT would need to be issued by a federally or state-licensed US entity, hold reserves in cash and short-dated Treasuries, and submit to monthly attestations. Tether has historically structured itself to avoid US bank regulation. Even if it restructured, the Act's prohibition on non-US issuers serving US persons without a domestic license would likely force Tether to either seek a US charter or accept a fragmented, restricted presence in the world's largest stablecoin market.

USDC and EURC, by contrast, are positioned for both regimes. Circle is already an NYDFS-regulated limited purpose trust company in the US and has pursued MiCA compliance through its Irish and French entities. EURC, Circle's euro stablecoin, was specifically designed to fit the EMT mold. Whether by design or by accident, both firms look like the structural winners of the new regulatory environment.

What a non-compliant issuer must do in each jurisdiction

The practical playbook for an issuer who is currently not authorized differs by jurisdiction.

Under MiCA, an EMT or ART issuer serving EU users without authorization is in breach of the regulation from day one. National competent authorities (BaFin, AMF, etc.) can halt the offering, force delisting from EU crypto-asset service providers, and impose fines. To come into compliance, the issuer must appoint a legal representative in the EU, prepare a white paper, obtain authorization as an e-money institution or credit institution, set up segregated reserve accounts at EU banks, build the capital buffer, and demonstrate operational and governance maturity. That process routinely takes 12 to 24 months.

Under the GENIUS Act, the consequences depend on how the issuer is structured. A non-US issuer serving US persons through a US distribution partner without meeting the federal or state standard would find that partner in violation, and enforcement would likely target the US entity first. For a non-compliant domestic issuer, the OCC, FDIC, or state regulator can revoke authorization, force redemption at par, and impose civil penalties. The Act also includes a transition period during which existing issuers can come into compliance without immediately being shut down.

In both cases, the cost of compliance is not just regulatory fees. It is the cost of becoming a regulated financial institution, with the governance, capital, audit, and reporting overhead that implies. That overhead is a moat for established issuers like Circle, and a barrier for smaller projects that previously launched stablecoins with a smart contract and a multisig.

The bigger picture: a de facto global template and the smaller jurisdictions left behind

MiCA and GENIUS are not just two regimes. They are likely to become the templates that other jurisdictions copy, because most countries do not have the bandwidth to draft stablecoin rules from scratch and would rather harmonize with their largest trading partners.

Countries in the Gulf, in Latin America, and across much of Asia are already consulting MiCA-style frameworks. The UK is finalizing its own regime that borrows MiCA's ART/EMT split. Even jurisdictions that had previously positioned themselves as crypto-friendly are quietly tightening stablecoin rules to avoid becoming dumping grounds for tokens that cannot be sold in New York or Frankfurt.

The risk is that smaller markets, particularly in Africa and parts of Southeast Asia, get locked out of both templates. They may not have the supervisory capacity to enforce rules as detailed as MiCA, nor the Treasury market depth to support a GENIUS-style reserve regime. Their residents will then continue to use stablecoins that are illegal in the EU and US, often without the protections those rules were designed to provide. Regulators call this leakage; users call it access.

For exchanges, neobanks, and crypto startups building internationally, the message is that the next 24 months will reshape who can issue, list, and distribute stablecoins. Planning around that reshape now is cheaper than reacting to it later.

How to follow stablecoin regulation the smart way

Stablecoin regulation moves faster than almost any other corner of crypto, and the rules in Brussels and Washington are only the start of the story. Tracking which national authorities are enforcing MiCA, which US states have approved "substantially similar" regimes under GENIUS, and how issuers like Circle and Tether are responding is a full-time job. Zippfeed surfaces stablecoin headlines with sentiment scoring (bullish, neutral, or bearish) and an importance rating, so you can see the regulatory signal without drowning in the noise.