Stablecoin Institutionalization under the GENIUS Act and Regulators' Strict Implementation Rules: Conflict Between Innovation and Control

The "Guiding and Establishing New Innovations for US Stablecoins Act (GENIUS Act)," which took effect on July 18, 2025, provided a clear institutional framework for the stablecoin market, which had long been in a state of legal uncertainty. However, as of May 2, 2026, about 10 months after the bill's passage, major regulatory agencies such as the Federal Reserve (Fed) and the Office of the Comptroller of the Currency (OCC) are fleshing out detailed implementation rules, creating a "narrow door" that differs from market expectations.

Stablecoin issuers have spent years asking Washington for clear rules, but now those rules are becoming the industry's biggest barrier to entry.

According to data from the Federal Reserve, the stablecoin market recorded a total market capitalization of $317 billion as of April 6, 2026, showing growth of over 50% compared to early 2025. This explosive growth is attributed to the legal stability provided by the GENIUS Act, but regulators are significantly tightening issuance requirements for the sake of the financial system's soundness.

Federal Regulators Announce Strict Implementation Rules

The implementation rules announced by the OCC on March 2, 2026, and the rules proposed by the Federal Deposit Insurance Corporation (FDIC) on April 10, contain strict standards for "Permitted Payment Stablecoin Issuers (PPSI)." In particular, for a listed company to issue a payment stablecoin, it must obtain unanimous approval from the "Stablecoin Certification Review Board," and it must be proven that this does not pose a significant risk to the safety and soundness of the U.S. banking system.

• Unanimous approval requirement from the Stablecoin Certification Review Board
• Strengthened standards for custody and management of reserve assets
• Compliance with Anti-Money Laundering (AML) and Countering the Financing of Terrorism (CFT) obligations
• Regular impact assessment reports on U.S. financial stability

The Financial Crimes Enforcement Network (FinCEN) and the Office of Foreign Assets Control (OFAC) under the Treasury Department also imposed comprehensive AML/CFT and sanctions compliance obligations on stablecoin issuers through joint rules on April 8, 2026. These rules require issuers to undergo strict identity verification procedures for all transactions, which directly conflicts with the existing virtual asset ecosystem that emphasizes anonymity.

Legal experts warn that these regulatory moves could hinder innovation. According to an analysis by Sullivan & Cromwell, the proposals from the OCC and FDIC are interpreted as an intention to place stablecoin issuance under bank-level regulation, which risks fundamentally blocking small and medium-sized fintech companies from entering the market.

On the other hand, regulators maintain that as stablecoins become more popular as a means of payment, the risks to the overall financial system increase. Their logic is that, unlike algorithmic stablecoins, fiat-collateralized stablecoins require transparency of reserves and immediate redemption capability, making strict supervision to ensure this inevitable.

Market participants evaluate that while the GENIUS Act provided a "legal home" for stablecoins, the conditions for moving into that home have become excessively demanding. This is expected to lead to rising costs due to institutionalization, ultimately accelerating a market reorganization centered on large financial institutions.

Future Outlook and Key Schedule

The implementation rules currently announced by each agency will be finalized after a public comment process. According to an Orrick report on April 30, 2026, issuers are now facing new AML/CFT and sanctions compliance obligations, signaling a fundamental change in how stablecoins will operate in the future.

The GENIUS Act was a cornerstone for the U.S. to take the lead in the digital asset market, but with the start of "microscopic scrutiny" by regulators, it remains uncertain how many companies will actually receive issuance permits. The public hearings and announcement of amendments over the coming months will be a watershed moment determining the long-term competitiveness of the U.S. stablecoin industry.