The US moved first. President Biden signed the GENIUS Act into law on July 18, 2025, giving the country its first federal framework specifically designed for payment stablecoins. The UK followed with its own set of moves in mid-2026, with the Bank of England publishing a detailed policy statement on June 22 and the Financial Conduct Authority finalizing its crypto asset regime rules on June 30.

What the rules actually say

The GENIUS Act is built around one core principle: if you issue a stablecoin in the US, it needs to be backed one-to-one by US dollars or similarly low-risk assets. There’s a notable restriction baked into the law. Issuers are prohibited from paying interest or yield to stablecoin holders. It draws a hard line between stablecoins as payment instruments and stablecoins as investment products, keeping them firmly in the former category. Full implementing rules are expected by mid-2026, with enforcement kicking in from January 2027.

The UK’s approach layers in more nuance. The BoE and FCA framework distinguishes between systemic issuers, those large enough to pose risks to financial stability, and non-systemic issuers. Systemic issuers fall under dual oversight from both the BoE and FCA. Non-systemic issuers deal primarily with the FCA. Both categories face strict requirements around backing assets and redemption rights, but the prudential oversight is proportionally heavier for the big players. The application gateway for the new UK regime is targeted to open in late 2026, with the full framework taking effect in 2027.

Backing asset requirements in the UK also involve statutory trust arrangements, meaning the assets backing tokens must be legally ring-fenced for holders. If an issuer runs into trouble, holders have a direct legal claim on the assets, not just a creditor position in a bankruptcy queue.

Why this timing matters

The EU beat both countries to the punch with its MiCA regulation. The BoE and FCA have explicitly flagged the importance of regulatory consistency to avoid putting UK-based issuers at a disadvantage relative to their MiCA-compliant European counterparts.

Dollar-denominated stablecoins already dominate the global stablecoin market by a wide margin, but that dominance has existed in a regulatory grey zone. The GENIUS Act attempts to formalize that dominance and extend it, creating a legal foundation that makes US-based issuers more attractive to institutional partners and international payment networks.

What this means for the market

The interest-yield prohibition in the US effectively limits one of the yield-generation mechanisms that decentralized finance protocols have relied on. That’s a friction point for DeFi platforms built around dollar-pegged tokens.

The risk for the UK, flagged by the BoE and FCA themselves, is timeline slippage. The application gateway opening in late 2026 with full effectiveness in 2027 is workable, but it’s a tight window. If the process gets delayed, the gap between MiCA-compliant European issuers and UK applicants widens. Investors watching this space should treat the UK’s late-2026 gateway opening as a meaningful milestone.