# Stablecoin Rulebook Comes Due as GENIUS Act Deadline Nears

A one-year rulemaking period ends on July 18, and the details will decide which dollar-token issuers can keep operating in the United States.

- Published: 2026-07-03T10:31:01.881Z
- Canonical: https://polylog.news/crypto/2026-07-03/stablecoin-rulebook-comes-due-as-genius-act-deadline-nears
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [CryptoSlate](https://cryptoslate.com/genius-made-stablecoins-legal-july-18-decides-which-stablecoins-stay-competitive/), [CoinDesk](https://www.coindesk.com/markets/2026/07/03/tokenization-could-make-finance-faster-but-also-more-susceptible-to-shocks-imf-says)

The GENIUS Act (the 2025 United States law that created a federal framework for payment stablecoins) reaches its one-year mark on July 18, the date by which six federal agencies must publish final rules. Industry executives quoted by [CryptoSlate](https://cryptoslate.com/genius-made-stablecoins-legal-july-18-decides-which-stablecoins-stay-competitive/) view the deadline less as a milestone of legitimacy and more as a test of compliance costs, one that reveals which issuers can afford full reserve, audit, and disclosure requirements and which cannot. Under the statute, only a permitted payment stablecoin issuer may mint a dollar token in the country, while exchanges and custodians may keep distributing non-permitted tokens until roughly July 2028.

The stakes are set by scale. Total stablecoin supply now stands near $309.9 billion, with Tether's USDT at about $184.03 billion and Circle's USDC at about $73.25 billion. That concentration means the rulebook effectively arbitrates an existing duopoly rather than an open field. Reserves held in short-dated Treasury bills tie that supply directly to United States government funding markets.

The International Monetary Fund added a note of caution the same day, warning that moving assets onto blockchains can make finance faster and cheaper while also leaving it [more susceptible to sudden shocks](https://www.coindesk.com/markets/2026/07/03/tokenization-could-make-finance-faster-but-also-more-susceptible-to-shocks-imf-says). Viewed through a sound-money framework, the deadline institutionalizes private dollar liabilities at the moment their systemic footprint is large enough to matter. The compliance floor it sets will determine whether the market widens or narrows around two incumbents.

## What this means

The rules decide whether the stablecoin market opens to new banked issuers or entrenches USDT and USDC, and they bind hundreds of billions of dollars in token reserves more tightly to Treasury markets, making stablecoin issuance a factor central banks and funding desks can no longer treat as peripheral.

## What to watch

- Whether the final agency rules set a compliance cost high enough to deter new entrants, which would signal that regulation is cementing the incumbent duopoly rather than broadening it.
- State-level certifications of substantial similarity due the same day, because a fragmented state-versus-federal map would let issuers venue-shop for the lightest supervisor.