America's First Stablecoin Rulebook: What the GENIUS Act NPRM's $10B Threshold Means for the $308B Market
The U.S. government just released its first formal rulebook for stablecoins — and buried inside 87 pages of regulatory prose is a $10 billion dividing line that will determine whether Circle, Tether, and the next generation of stablecoin issuers answer to state regulators or Washington. On April 1, 2026, the U.S. Treasury Department dropped its Notice of Proposed Rulemaking (NPRM) under the GENIUS Act, the landmark stablecoin law signed last July. The clock is ticking: a 60-day comment window is open, final rules are expected by July 2026, and the entire $308 billion stablecoin market faces a regulatory cliff by January 2027.