Stablecoin regulation is still settling globally, but a clear pattern is emerging. Here's how the major regimes treat them:
United States — the most defined framework
- GENIUS Act (signed July 2025): establishes a federal regulatory framework. Stablecoins backed 1:1 by reserve assets with a total market cap above $10B are treated as payment stablecoins and fall under Federal Reserve oversight; smaller issuers can choose state-level regulation.
- Core requirements: 1:1 reserve backing, reserves held in cash, short-term Treasuries, and central bank deposits; monthly reserve attestations; and redemption on demand at par. Full segregation of customer funds from issuer assets is mandatory.
- Notably, "algorithmic" or unbacked stablecoins (like the old TerraUSD model) are effectively prohibited — no issuer can claim "stable" without actual backing.
European Union — MiCA
- Took effect June 2024 for issuers, with stricter rules from mid-2025. Classifies stablecoins as e-money tokens (EMTs) or asset-referenced tokens (ARTs).
- Caps on daily transaction volume, mandatory reserve requirements, and a prohibition on algorithmically stabilized tokens. Foreign issuers must have an EU-registered entity and hold reserves in EU banks.
UK — in progress
- The FCA is finalizing its regime; the stablecoin bill (payments regulation) became law in 2025, with full rules expected through 2026. It leans on the same core principle: regulated issuance, backed reserves, redemption rights.
Other notable jurisdictions
- Japan was early (2023 PSA): stablecoins must be pegged to legal tender and issued only by licensed banks/trust companies.
- Singapore (MAS), Hong Kong, and the UAE have each introduced licensing and reserve rules for fiat-backed stablecoins.
- El Salvador takes the opposite approach — its 2025 law permits USD-backed and Bitcoin-pegged stablecoins, treating them as a legal-tender class.
What's common across all of them
- Backing is the whole game — reserve quality and 1:1 backing are the universal requirement.
- Redemption rights — holders must be able to redeem at par, on demand.
- Transparency/audits — monthly or quarterly attestation of reserves.
- Algorithmic stablecoins are essentially banned everywhere post-Terra.
The broad direction: fiat-backed stablecoins are being legitimized as payment infrastructure, while unbacked/algorithmic ones are being pushed out. The main open questions are cross-border harmonization and whether the custody of reserves (Treasuries, bank deposits) ends up creating new systemic risks.
If you'd like, I can pull live market data on the largest stablecoins (USDC, USDT, DAI) — current market caps, trading volume, and how their pegs are holding today.