The GENIUS Act, the federal stablecoin law Congress passed in July 2025, starts governing the market on January 18, 2027. That date does not move. What nobody has settled is whether the rules meant to run it will exist by then, and the calendar now says they will not arrive in time to matter.
On August 17 the Treasury Department published its proposed rulebook and opened a 60-day public comment window. Treasury Secretary Scott Bessent said the department "welcomes input from stakeholders" as it works toward regulatory certainty. Read the timing and the window becomes the story. It runs into mid-October, weeks past the one date that could have shortened the wait.
Two triggers, and only one still counts
Section 20 of the GENIUS Act sets the effective date as the earlier of two triggers. First comes a hard backstop, 18 months after enactment, which lands on January 18, 2027. Second, and faster on paper, the date can jump to 120 days after the primary regulators finalize their rules.
Count backward from January 18. The 120-day path needs final rules in regulators' hands by roughly September 20, 2026. Miss that cutoff and the fast route can no longer beat the backstop. Treasury's comment period does not close until October, so a final rule cannot appear before the shortcut has already expired.
| Trigger | Date it points to | Status now |
|---|---|---|
| The 18-month backstop | January 18, 2027 | Fixed, cannot slip |
| 120 days after final rules | Needs rules by September 20, 2026 | Out of reach |
The deadline the agencies already blew
An earlier date came and went first. Section 13 gave the agencies one year, until July 18, 2026, to issue final implementing regulations. They missed it. A rulemaking tracker from Astraea Counsel counted 11 proposed rules and zero final ones across five agencies as of mid-July, with the Federal Reserve yet to float a standalone GENIUS Act rule.
Six bodies share the job here: Treasury, the OCC, the FDIC, the NCUA, the Federal Reserve, and FinCEN. Their slippage does not push January 18 back a single day. It moves the squeeze onto issuers, who now face a fixed compliance date under a framework still sitting in draft.
What stablecoin issuers inherit
The stablecoin market ran near $300 billion in July, with Tether's USDT around $185 billion and Circle's USDC around $73 billion. Any dollar-backed issuer that wants to operate legally in the United States needs a federal or state license under the GENIUS Act regime.
They cannot apply for one yet. The licensing machinery lives inside rules that stay unfinished, so an issuer cannot file into a process that has no final shape. Europe hit the same drag when its own regime went live, and its MiCA licence register filled slowly for months. US stablecoin supply, meanwhile, has kept sliding since spring, and the wider market-structure bill in Congress remains stuck on procedural math of its own.
The next marker is the Federal Register publication that starts the 60-day clock. Final rules can still land after it. On the current pace they show up in 2027, after the law they explain has already taken hold.
