Nine months after the GENIUS Act became law, three federal agencies have published proposed rules that together form the operational blueprint for a $320 billion stablecoin market. The Office of the Comptroller of the Currency (OCC) led in February, the Federal Deposit Insurance Corporation (FDIC...
"This proposal will protect the U.S. financial system from national security threats without hindering American companies' ability to forge ahead in the payment stablecoin ecosystem." — Scott Bessent, U.S. Secretary of the Treasury
Nine months after the GENIUS Act became law, three federal agencies have published proposed rules that together form the operational blueprint for a $320 billion stablecoin market. The Office of the Comptroller of the Currency (OCC) led in February, the Federal Deposit Insurance Corporation (FDIC) followed on April 7, and the Treasury's Financial Crimes Enforcement Network (FinCEN) with the Office of Foreign Assets Control (OFAC) filed a joint notice on April 8. Comment periods close between June 2 and June 9, 2026. Final rules must be issued by July 18, 2026 — exactly one year after enactment. The GENIUS Act itself takes effect on January 18, 2027, or 120 days after final regulations, whichever comes first.
The combined rulemaking treats stablecoin issuers as bank-grade financial institutions: 1:1 reserve backing, $5 million minimum capital floors, two-business-day redemption windows, monthly audited reserve reports, and sanctions-compliance programs subject to $100,000-per-day civil penalties. For Tether — the $185 billion offshore incumbent — the rules force a structural split already underway. For U.S. banks eyeing issuance, the rules provide a chartering pathway that could reshape competitive dynamics by early 2027.
The GENIUS Act — signed July 18, 2025, after passing the Senate 68-30 and the House 307-122 — created a category called "Permitted Payment Stablecoin Issuers" (PPSIs). The law mandated that three primary federal regulators produce binding rules within 12 months. The April rulemaking wave completed the third and final set of proposed regulations.
The framework operates on two tiers. Issuers with more than $10 billion in outstanding stablecoins fall under direct federal supervision by the OCC or FDIC. Issuers below that threshold may elect state-level regulation, provided the state regime meets Treasury's "substantially similar" standard. As of April 2026, no state has yet been certified as substantially similar.
The stablecoin market these rules will govern stands at $320 billion, according to DefiLlama data from April 16, 2026. Tether's USDT holds $185.5 billion (57.96% share), Circle's USDC holds $78.6 billion, Sky Dollar (USDS) holds $8.6 billion, and Ethena's USDe holds $5.8 billion. The top five issuers account for $283 billion of the total.
The FDIC's April 7 notice of proposed rulemaking establishes prudential requirements across four domains: reserves, redemption, capital, and risk management.
Reserve requirements. PPSIs must maintain reserves that fully back outstanding stablecoins at a 1:1 ratio using eligible high-quality liquid assets — cash, Federal Reserve balances, demand deposits, short-dated U.S. Treasuries, qualifying repurchase agreements, and government money market funds. Exposure at any single eligible institution is capped at 40% of total reserve assets. Monthly reserve composition reports must be audited by a registered public accounting firm. Pledging or rehypothecating reserve assets is prohibited, with limited exceptions.
Redemption standards. Stablecoins must be redeemable at par within two business days. When redemption requests exceed 10% of outstanding issuance within a 24-hour period, the issuer must immediately notify the FDIC and may request an extension. The OCC's parallel rule allows a non-discretionary extension to seven calendar days under the same 10% threshold.
Capital requirements. A $5 million floor applies during a three-year de novo period. PPSIs must also maintain an operational backstop of highly liquid assets separate from reserves. For state-level issuers, Treasury requires state regimes to adopt capital frameworks anchored in common equity tier 1 and additional tier 1 capital.
Prohibited activities. Paying interest or yield on stablecoins is banned. Providing credit to customers for stablecoin purchases is prohibited. Permissible activities are limited to four functions: issuing payment stablecoins, redeeming payment stablecoins, managing reserves, and providing limited custody services.
The FDIC's comment period runs 60 days from Federal Register publication.
The April 8 joint proposal from FinCEN and OFAC treats PPSIs as financial institutions under the Bank Secrecy Act. The rule distinguishes between primary-market activity — where the issuer interacts directly with the user (issuing, converting, redeeming, burning) — and secondary-market activity conducted without the issuer as a direct party.
Customer due diligence. Required for primary-market activity only. PPSIs must establish risk-based procedures for customer identification and ongoing monitoring, directing resources toward higher-risk customers. Secondary-market activity may inform risk profiling but is not subject to mandatory CDD.
Suspicious activity reporting. SARs are required for primary-market transactions above a $5,000 threshold, increased from the prior $2,000 standard. Secondary-market transactions do not trigger SAR obligations.
Sanctions compliance. The rule imposes a five-pillar framework: senior management commitment, risk assessment, internal controls, testing and auditing, and training. Sanctions obligations extend to both primary and secondary markets. PPSIs must block, freeze, or reject transactions involving sanctioned persons — even when those persons interact only through smart contracts. The rule states that issuers "would control" stablecoins through smart contracts even in the secondary market, creating an affirmative duty to identify and block stablecoins held by blocked persons.
Penalties. Knowing violations of sanctions-compliance program maintenance requirements carry civil monetary penalties of $100,000 per day under a strict-liability regime — meaning liability can attach without knowledge of the specific violation.
Enforcement approach. FinCEN stated it is unlikely to pursue enforcement for AML program violations absent "significant or systemic failure." Other federal agencies must consult FinCEN before initiating AML-related supervisory action. Comments are due by June 9, 2026.
On April 3, Treasury published a separate NPRM addressing the GENIUS Act's provision allowing issuers under $10 billion in outstanding stablecoins to opt for state regulation. The proposal defines "substantial similarity" across two categories.
Uniform requirements — where states have no discretion — include reserve asset requirements, AML/BSA/sanctions programs, and disclosure and naming restrictions.
State-calibrated requirements — where states may tailor outcomes — include capital requirements, governance provisions, and risk management practices.
The federal baseline incorporates the GENIUS Act itself, OCC regulations, Treasury rules implementing BSA and sanctions requirements, and Federal Reserve anti-tying provisions. States may impose requirements beyond the federal floor so long as they do not conflict with federal law or undermine substantial similarity.
Comments on this proposal are due by June 2, 2026.
The OCC published its proposed rule on February 25, 2026, establishing the application and licensing framework for OCC-chartered PPSIs. The rule specifies eligible reserve assets — cash, Fed balances, demand deposits, short-dated Treasuries, qualifying repos, and government money market funds — and requires total fair value to equal or exceed outstanding issuance at all times.
The OCC mirrors the GENIUS Act's prohibition on paying interest or yield to stablecoin holders. It sets a seven-calendar-day non-discretionary redemption extension when requests exceed 10% of outstanding issuance in 24 hours.
All three agencies' final rules must be issued by July 18, 2026. Industry participants have approximately two months to file comments before the regulatory architecture is locked in.
Tether, the $185.5 billion incumbent operating from the British Virgin Islands, has adopted a dual-track strategy to navigate the GENIUS Act.
On January 27, 2026, Tether launched USAT, a federally regulated dollar-backed stablecoin issued through Anchorage Digital Bank. USAT is purpose-built for U.S. institutional use under the GENIUS Act framework. USDT continues to serve global crypto liquidity as an offshore instrument.
The structural split reflects a provision in the GENIUS Act that allows foreign issuers to offer stablecoins in the U.S. through a reciprocity pathway. However, Senator Jack Reed introduced legislation in February 2026 to close what he characterized as a loophole allowing USDT to circulate domestically without full reserve disclosure requirements.
According to Outlook India, capital flows are shifting from unregulated to regulated stablecoins, with Tether's USDT dominance falling 2.5% since the start of 2026 according to Bitcoin.com data. Standard Chartered forecasts $500 billion in total capital migration from traditional bank deposits into stablecoins by 2028.
Circle's USDC, at $78.6 billion, is positioned as the compliance-ready incumbent. Circle has published GENIUS Act compliance documentation and holds state money transmitter licenses alongside its positioning for OCC or FDIC oversight.
The FDIC's December 19, 2025 rulemaking established application procedures for FDIC-supervised insured depository institutions seeking to issue payment stablecoins through subsidiaries. The April 2026 prudential standards complete the operational framework.
BNY Mellon has positioned itself as a primary custodian for the reserves that the GENIUS Act requires. JPMorgan is piloting tokenized deposit tokens and has revealed plans to test stablecoin services alongside its deposit tokenization efforts. The first bank-issued stablecoins are expected to appear by late 2026 or early 2027.
The compliance burden embedded in the rules — monthly audited reserve reports, $5 million capital floors, two-day redemption windows, five-pillar sanctions programs — creates structural advantages for well-capitalized institutions. According to a Brookings Institution analysis, smaller issuers operating through DAOs cannot meet these requirements, effectively consolidating the market around regulated entities.
Projected market growth reinforces the stakes. According to ainvest.com, the GENIUS Act is expected to add $25 billion to $75 billion in stablecoin issuance. Industry analysts project the total stablecoin market could reach $500 billion by the end of 2026 as regulatory clarity draws institutional capital.
Three agencies, one deadline. The OCC, FDIC, and FinCEN/OFAC have each published proposed rules. All final rules must land by July 18, 2026. Comment periods close between June 2 and June 9.
Bank-grade compliance. Stablecoin issuers face 1:1 reserve requirements, $5 million capital floors, 40% single-institution exposure caps, monthly audited reserve reports, and sanctions penalties of $100,000 per day.
Two-day redemption standard. PPSIs must redeem at par within two business days, with extensions permitted only when 10% of outstanding issuance is requested in 24 hours.
Primary vs. secondary market distinction. AML/CDD requirements apply to primary-market activity. Sanctions obligations extend to both markets, including smart-contract-mediated transactions.
Tether's structural split. USAT serves the U.S. regulated market; USDT remains the offshore instrument. USDT's market share has declined 2.5% year-to-date.
State pathway available but uncertified. Issuers under $10 billion may opt for state regulation, but no state has yet met Treasury's "substantially similar" standard.
Bank entry imminent. JPMorgan and BNY Mellon are positioning for stablecoin issuance or custody roles. First bank-issued stablecoins expected late 2026.
The April 2026 rulemaking wave transforms the GENIUS Act from statute to operational reality. The combined framework imposes bank-level compliance on an industry that has operated with minimal federal oversight. The 60-day comment windows represent the final opportunity for industry input before rules are finalized.
The economic implications are structural. Compliance costs will consolidate market share among well-capitalized issuers — Circle, Tether (via USAT), and incoming bank entrants. The sanctions framework's extension into secondary-market smart contracts creates obligations without clear precedent in traditional finance. And the state-federal boundary remains undefined until Treasury certifies its first "substantially similar" regime.
The $320 billion stablecoin market is about to learn what bank-grade regulation actually costs.