What Is a Stablecoin? Inside the GENIUS Act’s New US Rulebook

The United States gave stablecoins a legal home a year ago. The hard part — writing the actual rulebook — is still being finished, and the clock is loud. Under the law President Trump signed on 18 July 2025, the new federal regime for dollar-pegged crypto takes effect no later than 18 January 2027, and regulators spent the first half of 2026 racing to fill in the details.

If you have heard the phrase “GENIUS Act” and nodded along without quite knowing what a stablecoin is or why Washington suddenly cares, here is the plain-language version — what these tokens actually are, what the law now demands of the companies that issue them, and what changes for the person holding one.

What is a stablecoin, exactly?

A stablecoin is a cryptocurrency built to not move. Where bitcoin can swing thousands of dollars in a day, a stablecoin is pegged to a steady reference — almost always the US dollar — so that one token is meant to be worth one dollar, today and next month. The issuer keeps that promise by holding reserves: cash, short-term Treasury bills, and similar assets that can be sold quickly to redeem tokens on demand.

That stability is the whole point. It makes the tokens useful for the unglamorous plumbing of crypto — moving money between exchanges, settling trades, sending dollars across borders without a bank wire, and parking value in dollars in countries where the local currency is shaky. The category has grown from a niche trading tool into something closer to infrastructure. By 2026 the total value of stablecoins in circulation had climbed past $300 billion, according to industry trackers, most of it concentrated in a handful of large issuers.

The catch, until recently, was trust. A stablecoin is only as good as the reserves behind it, and for years holders had to take an issuer’s word that the money was really there. That gap between promise and proof is exactly what the new law tries to close.

What does the GENIUS Act actually require?

The Guiding and Establishing National Innovation for U.S. Stablecoins Act — the tortured acronym is deliberate — is the first comprehensive federal framework for what it calls payment stablecoins. It does a few concrete things.

First, it says only a licensed entity, a “permitted payment stablecoin issuer,” can legally issue a dollar stablecoin to Americans. Second, every token must be backed one-to-one with high-quality liquid assets, the reserves that make redemption real. Third, issuers are barred from paying interest or yield to holders simply for parking tokens — a stablecoin is meant to be digital cash, not a savings account. And issuers are pulled squarely into the anti-money-laundering system: a proposed Treasury rule would treat them as financial institutions under the Bank Secrecy Act and require sanctions-compliance programs.

“This proposal will protect the U.S. financial system from national security threats without hindering American companies’ ability to forge ahead in the payment stablecoin ecosystem.”

Scott Bessent, Treasury Secretary, in an April 2026 statement

The law also builds a split system between Washington and the states. A state can license and supervise its own issuers, but only up to $10 billion in outstanding tokens, and only if its rules are judged “substantially similar” to the federal ones by a new Stablecoin Certification Review Committee chaired by the Treasury secretary. Cross that $10 billion line and an issuer moves under federal oversight. It is a design meant to keep smaller players nimble while pulling the giants into the tighter net.

Video: CBS News — a plain-English primer on stablecoins and the GENIUS Act’s core rules. Watch on YouTube

When does the GENIUS Act take effect?

Not yet, and that is the source of the current scramble. The Act sets its effective date as the earlier of two triggers: 120 days after the main federal regulators finish their implementing rules, or a hard backstop of 18 January 2027 — 18 months after the law was signed. Agencies aimed to complete most of the required rulemaking within the first year, by roughly mid-July 2026.

They have been busy. Since the fall of 2025, the Treasury Department, the Office of the Comptroller of the Currency, the Federal Deposit Insurance Corporation and the National Credit Union Administration have each put out proposals — six as of April 2026 — covering who can apply for a license, what reserves and risk controls they must maintain, how states qualify, and how the anti-money-laundering rules apply. As the law firm Morgan Lewis noted in an April review of the process, plenty of work remains: the Federal Reserve had not yet issued its own proposal, and several Treasury items were still open.

The deadlines, notably, carry no teeth. Regulators face no formal penalty for missing them, which is why the January 2027 backstop matters more than the softer mid-2026 target. What is clear is the direction of travel — a US that has decided to bring stablecoins inside the tent rather than push them offshore.

What does it mean for the people who use them?

For an ordinary holder, the promised payoff is confidence. A licensed, reserve-backed, regulated token is harder to run to zero than the loosely-backed experiments that blew up in earlier crypto cycles. Redemption becomes a legal right, not a marketing slogan.

There are trade-offs buried in the fine print. The FDIC has proposed that reserves a company parks at an insured bank would be insured to the issuer, under corporate-deposit rules — not passed through to each individual token holder. So a stablecoin is not a bank account with government-guaranteed deposits, and treating it like one would be a mistake. The no-yield rule also means holders should not expect these tokens to pay them anything; the returns, if any, accrue to the issuer sitting on billions in Treasury bills.

The bigger effect may be on who issues these things at all. Clear federal rules are pulling regulated financial firms into a market crypto natives built. Traditional banks and payment companies are circling, and issuers already inside the system are moving to secure their footing — Circle’s push for an OCC trust-bank charter is one sign of how the incumbents are positioning. The same logic is playing out abroad, with Japan assembling its own stablecoin framework and other governments watching Washington’s template closely.

For now the rulebook is a draft with a deadline. Whether the finished version arrives before the January 2027 backstop or bumps right up against it, the question that started this — is the dollar in your crypto wallet actually backed by a dollar? — finally has a legal answer coming. The details of that answer are being written in the Federal Register right now, one comment period at a time.

Sources consulted: the U.S. Treasury announcement on the FinCEN/OFAC proposed rule; Morgan Lewis’s GENIUS Act implementation review; and the OCC’s proposed stablecoin rule in the Federal Register.

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Alexandra Hartman Editor-in-Chief

Editor-in-Chief Prize-winning journalist with over 20 years of international news experience. Alexandra leads the editorial team, ensuring every story meets the highest standards of accuracy and journalistic integrity.

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