
Briefing
The U.S. Treasury Department is currently navigating a critical policy dispute during the rulemaking process for the newly enacted GENIUS Act, which established a federal framework for payment stablecoins. The primary consequence for the digital asset industry centers on the statutory clause prohibiting the payment of interest or rewards on stablecoins, a provision intended to protect the traditional banking system’s deposit base. Banking industry groups have formally argued for a broad interpretation that would extend the ban to include all forms of remuneration, even those offered by non-issuers like crypto exchanges, while crypto firms advocate for a narrow application limited strictly to the stablecoin issuer. The Treasury’s final rule on this clause will define the viability of stablecoin yield products and is the single most important detail to watch before the law’s full implementation.

Context
Before the GENIUS Act’s passage, the issuance and use of stablecoins operated without a clear, unified federal legal framework, leading to significant legal ambiguity regarding their classification as securities, commodities, or payment instruments. This uncertainty allowed a fragmented market to develop where crypto exchanges and lending platforms could offer substantial yield on stablecoin balances, creating direct, unregulated competition with bank deposits. The GENIUS Act was a high-level legislative solution designed to mandate a 1:1 reserve backing for payment stablecoins and establish a clear regulatory perimeter, but its statutory language on the interest ban was intentionally broad, deferring the critical task of defining “interest or other rewards” to the subsequent Treasury rulemaking.

Analysis
The Treasury’s final interpretation will fundamentally alter the product structuring and risk-management systems of Crypto-Asset Service Providers (CASPs) and non-bank issuers. A broad ban, as advocated by banking trades, would force exchanges to immediately cease all interest-bearing stablecoin products, eliminating a major revenue stream and a core incentive for retail and institutional adoption of centralized stablecoins. This action would necessitate a complete overhaul of current platform operating models and risk disclosure frameworks. Conversely, a narrow ban, applying only to the issuer, would preserve the current exchange-based yield models, but it would require platforms to implement rigorous legal and technical controls to demonstrate that the yield is generated by a separate entity and is not an “indirect payment” from the issuer, thus avoiding regulatory arbitrage.

Parameters
- Reserve Requirement Standard ∞ Issuers must maintain a 1:1 reserve backing for all outstanding payment stablecoins in safe, high-quality liquid assets.
- Interest Ban Target ∞ The statutory prohibition is against the payment of interest or other rewards linked to stablecoin usage or balances.
- State Regulation Threshold ∞ Nonbank issuers with less than $10 billion in outstanding stablecoins may opt for state-level regulation, provided the regime is deemed “substantially similar” to the federal standard.

Outlook
The immediate strategic focus shifts to the Treasury’s final Notice of Proposed Rulemaking, which is expected to be released in the coming months and will provide the definitive interpretation of the interest ban. Should the Treasury adopt the broad interpretation, the industry can anticipate an acceleration of capital migration toward decentralized finance (DeFi) protocols, which operate outside the direct purview of the GENIUS Act, or a pivot toward non-stablecoin tokenized assets. The final rule will set a powerful precedent for how the U.S. government intends to manage the competitive dynamics between legacy finance and the digital asset ecosystem, influencing the market structure for the next decade.
