US Treasury proposes GENIUS stablecoin rules

TLDR

The US Treasury has proposed its first GENIUS Act rules, defining how stablecoins will be regulated across states and the federal government.

1. Treasury released an 87-page GENIUS Act proposal that sets principles for state stablecoin regimes and opens a 60-day public comment period.
2. The rules create a dual-track system: issuers under 10 billion dollars may stay under strict state oversight, while larger issuers must move into a federal regime.
3. Key open issues include how tough the final standards will be, how yield-bearing stablecoins fit in, and how unlicensed stablecoins will be treated after 2028.

Deep Dive

1. Proposed GENIUS Framework

Treasury has published its first GENIUS Act notice of proposed rulemaking (NPRM), an 87-page document that starts formal implementation and invites comments for 60 days. The proposal focuses on how to judge whether a state regime is "substantially similar" to the federal framework for payment stablecoins, including reserve, disclosure and compliance standards.

Uniform federal requirements include 1:1 reserve backing with cash or high-quality liquid assets, monthly public reserve reports, strict anti-money-laundering and sanctions compliance, and bans on rehypothecating reserves, as summarized in recent coverage of the GENIUS Act proposal and state-stablecoin rules. States can be stricter, but not looser, on areas like liquidity and risk management.

2. Impact On Stablecoin Issuers

The framework formalizes a dual-track model. Issuers with less than 10 billion dollars in outstanding stablecoins may operate under approved state regimes if those regimes align with federal standards, while issuers above that threshold are pulled into federal oversight, likely via the Office of the Comptroller of the Currency, as described in analyses of the dual-track GENIUS system.

For major payment stablecoins like USDT and USDC, which already exceed that size, this points toward more bank-like supervision, tighter reserve rules and more intrusive reporting. Smaller or newer issuers gain a potential state-level path, but only if their state wins certification under the federal "substantially similar" test, which could favor a handful of stricter states and make regulatory arbitrage harder.

3. Key Dates And Open Questions

The comment period runs for 60 days after publication, after which Treasury will finalize rules, so meaningful changes are still possible. Crucially, once the GENIUS regime is fully in effect, it becomes unlawful after 18 July 2028 to offer or sell unlicensed payment stablecoins to US persons, according to summaries of the transition timeline.

Two big open questions matter for crypto users and builders: how harsh the final implementation will be for smaller, experimental issuers, and how yield-bearing or reward-paying stablecoins will be treated, which is being debated in parallel under the CLARITY market-structure bill. The tougher those answers are, the more pressure there will be on DeFi protocols and exchanges that rely on nontraditional or offshore stablecoins.

Conclusion

Treasurys GENIUS NPRM starts the shift from a patchwork of money-transmitter licenses to a structured national system for dollar stablecoins. The 10 billion dollar threshold and strict reserve, disclosure and AML rules will likely push large issuers into bank-like supervision and constrain how far smaller issuers can deviate under state regimes. How regulators handle yield-bearing products and unlicensed tokens will determine whether US stablecoins become a tightly controlled payments rail or remain a broad, innovation-heavy asset class.