Four U.S. federal agencies — the Federal Reserve, OCC, FDIC, and Treasury — have now published proposed rules implementing the GENIUS Act, the first comprehensive federal stablecoin law enacted in July 2025. The rulemaking wave, which began with the OCC in March 2026 and culminated with the Fed's...
"Stablecoins will only be stable if they can be reliably and promptly redeemed at par in a range of conditions." — Michael S. Barr, Vice Chair for Supervision, Federal Reserve Board
Four U.S. federal agencies — the Federal Reserve, OCC, FDIC, and Treasury — have now published proposed rules implementing the GENIUS Act, the first comprehensive federal stablecoin law enacted in July 2025. The rulemaking wave, which began with the OCC in March 2026 and culminated with the Fed's twin proposals on September 24, imposes reserve, capital, redemption, and risk-management requirements on permitted payment stablecoin issuers (PPSIs). The law's effective date is January 18, 2027. No agency has yet finalized its rules.
The result is a compressed compliance window for a $301 billion market. Tether, whose USDT holds 59% of supply, does not currently qualify under the Act and is pursuing a dual-token strategy through its USA₮ product. Circle's USDC, at 24% of supply, enters the deadline with a national trust bank charter and Deloitte-audited reserve attestations already in place. Three new entrants — Agora, Catena, and Bastion — received conditional OCC charters in September. The practical question is whether the rulemaking apparatus can finalize in time, or whether the industry enters the effective date with proposed rules but no final framework.
The GENIUS Act — Guiding and Establishing National Innovation for U.S. Stablecoins — was signed into law in July 2025. It delegated implementation to four primary federal regulators, each responsible for its own supervised entities.
The OCC moved first. On March 2, 2026, it published a Notice of Proposed Rulemaking (NPRM) in the Federal Register establishing reserve, capital, liquidity, custody, and risk-management requirements for OCC-supervised PPSIs. The FDIC followed on April 10, 2026, with a substantially similar proposal for FDIC-supervised issuers and insured depository institutions. The Treasury published its Section 3 NPRM on August 18, 2026, covering issuance, offer, and sale of payment stablecoins — including the rules governing foreign issuers. Comments on that proposal are due October 19, 2026.
The Federal Reserve issued two companion NPRMs on September 24, 2026. The first establishes reserve, capital, redemption, risk management, and custodial requirements for Fed-supervised PPSIs. The second covers the application process for entities seeking to become Board-supervised issuers. The Fed is providing 60 days for public comment.
The statute's effective date is the earlier of January 18, 2027, or 120 days after primary regulators issue final implementing rules. As of October 9, 2026, no agency has finalized its rules. The compliance window is narrowing.
Across all four agencies, the proposed rules converge on several core requirements.
One-to-one reserve backing. Every dollar of outstanding stablecoin must be backed by at least one dollar of permissible reserve assets, recorded at fair value at least once per calendar day. Eligible assets include U.S. dollars, balances held at a Federal Reserve Bank, insured deposits at depository institutions, U.S. Treasury securities maturing within 93 days, and certain Treasury-backed repurchase agreements. Reserve assets must be segregated from other issuer assets.
Two-business-day redemption. The Fed's proposal defines "timely" redemption as no later than two business days following the date of a requested redemption. Issuers must publicly disclose their redemption policies and fee structures in plain, conspicuous language and provide at least seven days' notice before changing fees.
Reserve deficiency procedures. If reserves fall below one-to-one backing, the issuer must notify its primary regulator and either restore reserves under a remediation plan or liquidate and redeem all outstanding stablecoins.
Monthly audited reserve reporting. Issuers must publish monthly attestations of reserve composition and adequacy, subject to independent audit.
Risk management standards. The proposals impose principles-based risk management standards and custodial requirements for entities safekeeping reserve assets and private keys.
The Federal Reserve's September proposal introduces a tiered capital charge. According to the NPRM, PPSIs must hold capital equal to 2% of their first $20 billion in outstanding stablecoins and 1% on amounts above $50 billion. An additional 2% capital charge applies to reserve assets held as uninsured deposit claims or undercollateralized reverse repurchase agreements.
For context: Tether's USDT outstanding stands at approximately $178 billion, and Circle's USDC at approximately $72 billion. Under the Fed's proposed tiered structure, a hypothetical Fed-supervised issuer of USDT's size would face a capital requirement in the range of $2 billion to $2.5 billion, depending on reserve composition. Whether Tether or Circle would fall under Fed supervision — rather than OCC or state regimes — depends on their charter structure.
The OCC's March proposal contains its own capital and liquidity framework, though the specific charge percentages differ. The divergence between agency proposals is notable: the same issuer could face materially different capital requirements depending on which federal regulator it falls under.
Section 4 of the GENIUS Act prohibits PPSIs from paying interest or yield solely in connection with the holding, use, or retention of payment stablecoins. The prohibition takes effect on January 18, 2027.
The policy rationale, according to the Bank Policy Institute, is to prevent deposit flight from the banking system. If stablecoins offered yield competitive with bank deposits, the resulting disintermediation could "heighten bank liquidity and broader financial stability risks, limit credit availability to consumers and businesses, and increase the cost of bank deposits and funding," the BPI wrote in its analysis.
The OCC's February 2026 proposed rule attempts to close an affiliate-yield loophole: it introduces a rebuttable presumption that arrangements where an issuer pays an affiliate or third party who then routes yield to holders violate the statutory prohibition. This targets the practice, common among DeFi protocols, of wrapping stablecoins in yield-bearing instruments while claiming the issuer itself pays nothing.
The interest ban creates a structural asymmetry. Stablecoin issuers earn yield on their reserves — primarily short-duration Treasuries — but cannot pass that yield to holders. At current Treasury-bill rates, a $178 billion reserve portfolio generates substantial revenue for the issuer. The GENIUS Act codifies this margin as a regulatory feature, not a bug.
The Treasury's August 18 NPRM addresses a critical question: can offshore-domiciled stablecoins remain accessible to U.S. persons?
The answer is conditional. Beginning July 18, 2028, digital-asset service providers generally cannot offer or sell payment stablecoins to persons located in the United States unless the stablecoin was issued by a permitted issuer or a qualifying foreign issuer. Foreign issuers must obtain a reciprocity determination from the Treasury and demonstrate compliance with lawful orders and applicable arrangements.
Providers offering foreign-issued stablecoins would need to conduct reasonable due diligence before relying on an issuer's representation of compliance. The rule does provide a safe harbor for foreign issuers in certain cross-border transactions where they reasonably believe recipients are outside the United States and maintain appropriate controls.
For Tether, this creates a two-phase challenge. Phase one, effective January 2027, activates the issuance prohibition and the lawful-orders test. Phase two, July 2028, bars platforms from listing non-compliant stablecoins for U.S. users. Tether's response is its dual-token strategy: USA₮, launched January 27, 2026 through Anchorage Digital Bank, a federally chartered institution, is designed to meet GENIUS Act requirements. USDT continues circulating globally. According to Forbes, "USAT exists so USDT never has to comply."
USDT's reserve composition — which includes gold and Bitcoin alongside Treasuries — renders it structurally incompatible with the GENIUS Act's permissible-asset list. The dual-token approach sidesteps this constraint by creating a ring-fenced compliant product for the U.S. market.
The stablecoin market reached $300.9 billion in total capitalization as of October 1, 2026, according to the RWA Foundation, across 195 assets, 152 issuers, and 47 blockchains. Supply grew $715.8 million in the week ending October 4. The market's all-time high was $322.4 billion, set in May 2026.
USDT and USDC together account for approximately 83% of supply. The GENIUS Act's requirements will apply unevenly across this duopoly.
Circle enters the compliance sprint with structural advantages. Its USDC on-chain transaction volume surpassed USDT for the first time since 2019 earlier in 2026, moving more adjusted dollars per day than Tether despite holding roughly 42% of USDT's market cap. Circle holds a national trust bank charter, publishes Deloitte-audited reserve attestations, and maintains reserves in cash and short-duration Treasuries — fully consistent with the Act's permissible-asset requirements.
Tether's USDT supply contracted by approximately $3 billion in Q1 2026, its first quarterly decline since 2022, while USDC added approximately $2 billion in the same period. Whether this reflects early GENIUS Act positioning or broader market dynamics is not definitively established by available data.
Three new OCC-chartered entrants add competitive pressure. On September 18, 2026, the OCC granted conditional trust charters to Agora National Trust Bank (seeking to migrate its $230 million AUSD stablecoin from Bermuda), Catena (co-founded by Circle co-founder Sean Neville, building AI-native financial infrastructure), and Bastion (a white-label stablecoin issuer for banks). None may accept deposits. None qualify for FDIC insurance. All must receive final OCC approval before commencing business.
The GENIUS Act represents the first time the United States has imposed a comprehensive prudential framework on stablecoin issuers. The four-agency rulemaking apparatus — OCC, FDIC, Treasury, and now the Fed — has produced a detailed but unfinalized regulatory architecture covering $301 billion in outstanding supply. The compliance timeline is compressing: approximately 100 days separate today from the statutory effective date, and no final rule has been issued.
The economic structure the Act creates is clear. Issuers must hold dollar-denominated, short-duration reserve assets one-to-one against supply, cannot pay yield to holders, must redeem within two business days, and face tiered capital charges. The reserve-yield spread — currently the primary revenue model for stablecoin issuers — is preserved but regulated. The interest ban protects the banking system's deposit base at the cost of limiting stablecoin utility as a savings instrument.
For the $301 billion market, the question is not whether regulation is coming. It is whether the regulatory apparatus can finalize its own rules before the law it is implementing takes effect.