Comment Period Closes as Implementation Rules Lag
The U.S. Treasury closed its public comment period on October 19, 2026, for proposed stablecoin regulations under the Guiding and Establishing National Innovation for U.S. Stablecoins Act (GENIUS Act), which President Trump signed into law on July 18, 2025. The NPRM posed 87 questions to industry covering issuer licensing, foreign stablecoin access, reserve composition, and exchange due diligence requirements.
The Act required regulators to finalize implementing rules by July 18, 2026—a deadline that passed without final rules from Treasury, the OCC, FDIC, or Federal Reserve. The statutory effective date has now defaulted to January 18, 2027, the earlier of that date or 120 days after primary federal regulators issue final rules.
Regulatory Timeline and Implementation Gaps
The OCC stated on August 19, 2026, that it expects to publish its final stablecoin rule by November 2026. If that timeline holds, the 120-day compliance clock would begin then, pushing the effective date to approximately March 2027. Until the OCC rule publishes, however, January 18, 2027 remains the operative enforcement date.
The OCC's February 2026 proposed rule attracted 47 formal comments including submissions from Visa, JPMorgan, and Coinbase. The final rule will establish the Federal Qualified Payment Stablecoin Issuer (FQPSI) designation, define capital requirements, and set redemption and disclosure standards.
The Federal Reserve's proposed capital and redemption requirements for stablecoin issuers under its supervision have not yet been finalized. If the Fed's rule publishes after the OCC's November target, entities under Federal Reserve supervision will have less time to reach compliance than those under OCC or FDIC jurisdiction.
Two Regulatory Categories and the $10 Billion Threshold
The Treasury proposal establishes a new regulatory framework under 12 CFR Part 1523 creating two categories: Permitted Payment Stablecoin Issuers (PPSIs) and Foreign Payment Stablecoin Issuers (FPSIs). A $10 billion market cap threshold serves as a structural dividing point. Issuers below this threshold may operate under qualifying state regimes, while those above must transition to the federal OCC regime within 360 days of the effective date or request an exemption.
USDT, at approximately $180 billion in global market cap, and USDC, at approximately $72 billion, both exceed this threshold and face mandatory federal compliance requirements.
Foreign Issuer Compliance and the Tether Path
The GENIUS Act bars foreign issuers from offering stablecoins to U.S. persons unless Treasury certifies their home jurisdiction maintains comparable regulatory standards. As of October 19, 2026, no foreign jurisdiction, including El Salvador, has received such a determination.
USDT is issued by Tether Limited, incorporated in El Salvador, making it a foreign issuer under the Act. Tether's structural response was the January 27, 2026 launch of USAT, a separate stablecoin issued by Anchorage Digital Bank, N.A., the only federally chartered crypto bank in the U.S. USAT is Tether's U.S.-qualified instrument.
USDC is issued by Circle, a U.S.-domiciled company that publishes monthly reserve attestations and has filed an OCC application for a trust bank license. USDC's reserve composition of short-duration U.S. Treasuries and cash equivalents aligns with the GENIUS Act's reserve requirements.
Immediate Compliance Obligations Take Effect January 18
Section 3(b)(2) of the GENIUS Act, effective January 18, 2027, prohibits offering foreign-issued stablecoins to U.S. persons unless the issuer can comply with lawful orders to freeze funds. The burden falls on digital asset service providers (DASPs)—exchanges, platforms, and on-ramps—to verify foreign issuers' capability to comply.
Treasury acknowledged in its proposal that DASPs may lack full insight into a foreign issuer's technological capability and cannot know with certainty whether the issuer will comply in the future. Treasury proposed instead a due diligence standard requiring platforms to have a reasonable basis to believe the foreign issuer can comply.
Section 4(e)(3) separately prohibits marketing a product as a payment stablecoin unless issued in compliance with the Act, carrying fines up to $500,000 per knowing violation. Section 3's issuer prohibition carries penalties up to $1 million per violation and up to five years imprisonment.
Platforms currently listing USDT must have documented compliance rationale by January 18 or face potential liability. USDT has until July 18, 2028 for full compliance, but the intermediate due diligence obligation takes effect 91 days from October 19.
Parallel Global Regulatory Deadlines
The EU's MiCA enforcement deadline for non-compliant stablecoin removal from exchanges follows a parallel January 2027 schedule. Both regulatory regimes reach their hard enforcement dates within weeks of each other, creating simultaneous compliance obligations for stablecoin issuers and platforms operating globally.
Current Status
As of October 19, 2026, Treasury's comment period has closed but the OCC final rule remains unpublished. No comparability determination for any foreign jurisdiction exists. Every stablecoin issuer, platform, and exchange operating in the U.S. market is currently complying with a law whose final operational rules do not yet exist. For USDT, the operational question remains binary: whether the OCC publishes before January 18, starting a 120-day clock that would extend the deadline to approximately March 2027, or whether the January 18 backstop activates with no comparability determination in place.
