Sullivan & Cromwell Discusses GENIUS Act Implementation

Key Takeaways

• FDIC proposes 40% cap on reserve assets at any single institution
• Tokenized deposits classified as deposits, not affecting insurance eligibility
• Reserve assets for stablecoins excluded from FDIC pass‑through insurance
• Treasury sets criteria for state regimes to mirror federal stablecoin rules
• FDIC and OCC differ on enforcement and additional control requirements

Pulse Analysis

The GENIUS Act represents the most comprehensive federal effort to bring stablecoins under a clear supervisory regime. By tying permitted payment stablecoin issuers (PPSIs) to insured depository institutions, the FDIC’s proposed rule seeks to embed stablecoin activity within the existing banking safety net. Its key provisions—such as a 40 percent limit on reserve assets held at any one financial institution and the explicit treatment of tokenized deposits as conventional deposits—aim to mitigate concentration risk while acknowledging emerging blockchain‑based recordkeeping. This approach also clarifies that reserve assets held as deposits are corporate deposits, meaning they are not insured on a pass‑through basis for end‑users, preserving the FDIC’s core insurance principles.

The FDIC’s proposal diverges from the OCC’s parallel rule in several notable ways. While both agencies endorse the 40 percent diversification limit, the OCC adds maturity‑based standards and mandatory consequences for non‑compliance, whereas the FDIC retains discretionary enforcement, allowing case‑by‑case remedies. Additionally, the FDIC explicitly permits PPSIs to issue multiple stablecoin brands, providing a framework for protecting distinct token holders—a topic the OCC left open. These differences signal a broader regulatory debate over the balance between flexibility for innovators and the need for uniform, enforceable safeguards across the banking sector.

Complementing the FDIC’s effort, the Treasury’s NPR outlines “broad‑based principles” for assessing state‑level stablecoin regimes. By requiring substantial similarity to the federal framework—except where the GENIUS Act grants states discretion—the Treasury seeks to prevent a patchwork of divergent rules that could undermine market stability. The guidance also allows states to impose stricter standards, offering a pathway for more rigorous consumer protections. Stakeholders have until June 2, 2026, to comment, and the final rules will likely shape the competitive dynamics of U.S. stablecoin issuance, influencing everything from reserve management strategies to the adoption of tokenized deposit technologies.