Stablecoin Rules in 2026: The GENIUS Rulebook Reaches Offshore

For thirteen months, the United States has had a stablecoin law without a working stablecoin rulebook. The GENIUS Act, signed on July 18, 2025, told the market what the rules would eventually say: full reserves behind every token, no interest paid to holders, redemption at face value, and federal supervision for the largest issuers. What it did not do was spell out the fine print that decides who actually complies and who does not. That job fell to the Treasury, the Office of the Comptroller of the Currency, the Federal Deposit Insurance Corporation, and a short list of other agencies, and for most of 2026 the fine print stayed in draft.

On August 17, that changed. The Treasury proposed the most consequential piece of the GENIUS rulebook so far, a rule defining when a stablecoin counts as issued, offered, or sold to an American, and it reaches well past companies headquartered in the United States. Read next to Europe’s MiCA regime, which has already pulled the world’s largest stablecoin off regulated exchanges, the proposal marks the moment the two biggest stablecoin rulebooks on the planet stopped being theory and started drawing borders. This guide walks through what those rules require, who enforces them, and what still is not settled.

A law in 2025, a rulebook in 2026

Stablecoins are no longer a niche. The total supply sits at roughly $310 billion, up about 14 percent over the past year, according to stablecoin market data compiled by Reap. Two tokens dominate: Tether’s USDT at around $183 billion and Circle’s USDC at roughly $73 billion, which together account for more than four fifths of the market, per CoinGecko’s stablecoin category. Close to 99 percent of that value is denominated in dollars. When an asset class the size of a mid-tier national money supply settles trades all day and increasingly touches ordinary payments, the question of who backs it and how becomes a question governments answer for themselves.

A statute and a rulebook are different things. The GENIUS Act set the principles; the implementing rules translate those principles into obligations a compliance officer can act on. Until the rules are final, an issuer knows the direction of travel but not the exact speed limit. That gap matters because the clock is running. The law takes effect on January 18, 2027, eighteen months after it was signed, whether or not every rule is finished. Everything happening in 2026, from Treasury notices to European delistings, is a race to fill in that gap before the deadline arrives.

What a stablecoin rule actually governs

Strip away the acronyms and every serious stablecoin framework pulls the same four levers. The first is backing. A payment stablecoin promises to be worth one dollar, so the rules dictate what may sit behind that promise: cash, short-term government debt, insured deposits, and little else. The second is redemption. A promise to pay a dollar is only as good as the right to actually claim it, so frameworks require issuers to redeem tokens at par, promptly, in ordinary conditions.

The third lever is yield. Regulators have largely decided that a payment instrument should not double as an investment product, so they bar issuers from paying interest to holders. That single choice reshapes the business model and pushes the hunt for yield onto exchanges and lending platforms instead. The fourth lever is the gatekeeping bundle: who is allowed to issue at all, who supervises them, and what anti-money-laundering duties they carry. Get those four right and you have described the GENIUS Act, MiCA, and the emerging British regime in a single breath. The differences, which turn out to be sharp, live in the details of each lever.

The GENIUS Act in plain terms

The GENIUS Act creates a licensed category called a permitted payment stablecoin issuer. Only such an issuer may offer a payment stablecoin to Americans once the law is fully in force. To qualify, an issuer must hold reserves worth at least one dollar for every token in circulation, and those reserves must sit in a narrow set of high-quality liquid assets. It must publish the composition of those reserves every month, with the disclosure examined by a registered accounting firm. It may not pay interest or yield to holders. It must maintain a clear policy for redeeming tokens at par.

Supervision splits by size. An issuer with more than $10 billion in tokens outstanding falls under a federal regulator, in most cases the Office of the Comptroller of the Currency. Smaller issuers may operate under a state regime, provided that regime is certified as substantially similar to the federal one. On top of all this, issuers are treated as financial institutions under the Bank Secrecy Act, which means full anti-money-laundering programs, sanctions screening, and the kind of identity checks that have become their own arms race against synthetic identities and deepfakes. Crucially, a payment stablecoin issued this way is not a security, a point US markets regulators put in writing earlier in the year and one the industry had wanted for a decade.

Who counts as a permitted issuer is narrower than the current market. The GENIUS Act contemplates three routes: a subsidiary of an insured bank, a nonbank issuer chartered and supervised by the OCC, or a state-qualified issuer operating under a regime the federal government certifies as comparable. Each route carries capital, liquidity, and governance expectations that a lightly regulated offshore issuer does not meet today. In practice, that pushes the market toward regulated financial firms and away from the freewheeling model that built the sector, and it explains why banks and established payment companies, rather than crypto-native startups, are the names most often floated as the issuers best positioned to lead the compliant era.

August 17: the rulebook reaches offshore

The Treasury’s August proposal is not about reserves or yield. It answers a jurisdictional question that sounds dry but decides who the law can actually touch: when is a stablecoin issued, offered, or sold to a US person? The Treasury notice implements Section 3 of the GENIUS Act, and its most striking feature is reach. According to The Block’s reporting on the proposal, digital asset service providers would face restrictions on offering or selling foreign-issued payment stablecoins unless the foreign issuer can comply with US legal orders and any applicable reciprocal arrangement.

That flips the compliance burden onto intermediaries. Under the draft, an exchange could be held responsible not only for the tokens it lists but for whether a foreign issuer behind them can honor a US court order, and platforms would be expected to run reasonable due diligence to find out. American Banker reported that the proposal extends liability to conduct such as converting or redeeming unlawful stablecoins, coordinating with issuers on solicitation or minting, and listing unregistered tokens shortly after issuance. It even treats geographic workarounds as unlawful offers: advising a customer how to dodge an IP-address check to reach a blocked token would itself breach the rule. Treasury Secretary Scott Bessent framed the move as delivering what he called “clear rules of the road” for payment stablecoins and said the department is “moving quickly to implement that framework.” The comment period runs through October 19, 2026, which leaves a tight window to finish this piece before the January effective date.

Ten proposals, one deadline

The August notice did not arrive alone. Across 2026, federal agencies published roughly ten separate proposals to build out the GENIUS framework, each covering a slice of the statute. The Office of the Comptroller of the Currency opened the sequence with core implementing rules in March. The FDIC followed in April with standards for insured-bank issuers. In June, the OCC returned with a dedicated proposal on Bank Secrecy Act, anti-money-laundering, and sanctions compliance for the payment stablecoin issuers it supervises, carrying a thirty-day comment window. Then came Treasury in August.

What the agencies did not do was meet the statute’s own deadline. The GENIUS Act asked the primary federal regulators to finalize implementing rules within one year, by July 18, 2026. That date passed with proposals on the table but nothing final. Because the law also sets its effective date at the earlier of eighteen months after enactment or 120 days after final rules, the missed deadline did not delay anything; it simply means the eighteen-month backstop governs, and the rules take effect January 18, 2027, finished or not. A further milestone lands in mid-2028, when digital asset service providers are barred from offering payment stablecoins that are not issued by a permitted issuer. The calendar below tracks the sprint.

Where the SEC stepped back

For years the open threat hanging over stablecoins in the United States was securities law. If a token counted as a security, its issuer faced registration, disclosure, and a supervisory relationship with the Securities and Exchange Commission that no payments business wanted. That threat receded in March, when the SEC and the Commodity Futures Trading Commission issued a joint interpretation on how federal securities laws apply to crypto assets. The interpretation sorts crypto assets into five buckets, digital commodities, digital collectibles, digital tools, stablecoins, and digital securities, and it states plainly that payment stablecoins issued by a permitted issuer under the GENIUS Act are not securities, as Forbes detailed at the time.

SEC Chairman Paul Atkins cast the guidance as an overdue settlement. “After more than a decade of uncertainty, this interpretation will provide market participants with a clear understanding of how the Commission treats crypto assets under federal securities laws,” he said. CFTC Chairman Michael Selig echoed the point, noting that “for far too long, American builders, innovators, and entrepreneurs have awaited clear guidance on the status of crypto assets.” The practical effect is that the SEC is not the day-to-day stablecoin regulator in the United States. That role belongs to the banking agencies, to Treasury for illicit-finance rules, and to the states for smaller issuers. The SEC’s retreat from stablecoins is itself a regulatory choice, and it is the reason the GENIUS rulebook is being written by bank supervisors rather than securities lawyers.

Reserves are the whole game

Everything else in a stablecoin framework is scaffolding around one load-bearing question: what is allowed to back the dollar? The GENIUS Act answers with a short, deliberately boring list. Permitted reserves are physical cash, insured demand deposits, US Treasury bills with 93 days or less to maturity, repurchase agreements against those bills, government money market funds that hold only those instruments, and reserves at a central bank. Reserves may not be lent out or rehypothecated except for narrow liquidity purposes. Anything with real price risk, corporate bonds, equities, gold, or other crypto, is off the table, which is precisely why a token that keeps Bitcoin and bullion in its reserves cannot qualify.

Circle’s USDC is the clearest example of a compliant model. Its reserves sit mostly in short-dated Treasuries held through the Circle Reserve Fund, a government money market fund managed by BlackRock with a weighted-average maturity under sixty days, plus cash at regulated banks, a mix the company reports on its transparency page. That structure is why the token survived every rule change of the past two years without breaking stride. A recurring industry debate is whether monthly attestations, which confirm balances at a point in time, are strong enough, or whether issuers should submit to full audits. The GENIUS Act requires the former and examination by a registered accounting firm; critics want more. The permitted and prohibited assets are laid out below.

MiCA already bit: Europe’s live rulebook

While the United States drafts, Europe enforces. The EU’s Markets in Crypto-Assets regulation treats fiat-backed stablecoins as e-money tokens, or EMTs, and basket-backed ones as asset-referenced tokens. Either way, the issuer must be an authorized bank or electronic money institution, hold fully segregated reserves, honor redemption at par on demand, and pay no interest to holders. For an EMT, a minimum share of reserves must sit in EU bank deposits, at least 30 percent for an ordinary token and 60 percent for one designated significant, with the balance in high-quality liquid assets and nothing speculative allowed.

MiCA also caps how far a non-euro stablecoin can penetrate European payments. Once a token crosses one million transactions or 200 million euros a day when used as a means of exchange for goods and services, its issuer must stop new issuance. The rules bit hardest at the largest player. Tether declined to seek an EMT authorization, and once MiCA’s transition window closed on July 1, 2026, licensed venues removed USDT for users in the European Economic Area, as crypto.news reported. Circle, which became the first global issuer to obtain a MiCA license, filled the gap with USDC and its euro token EURC. The result is visible on every regulated European order book, including the ones where the big exchanges now compete on features and automated trading tools rather than on which dollar token to list.

GENIUS versus MiCA, side by side

The two regimes agree on the big principles and diverge on the mechanics that matter most to issuers. Both demand full backing, both ban yield, both require redemption at par. Where they split is on where reserves must live and how they treat tokens from outside their borders. Europe’s rules are fully in force today; the American rules are proposed and take hold in January. The table captures the contrast.

The single row that matters most is reserve tilt. It looks like a technical footnote, yet it is the reason the same company can find one regime comfortable and the other close to impossible. An issuer built around US Treasury bills, as the American rules encourage, would have to restructure its entire balance sheet to satisfy Europe’s demand for bank deposits, and the reverse holds too. That is why the world’s two largest tokens ended up on opposite sides of the Atlantic divide, with one leaning fully into the US model and the other effectively shut out of regulated European venues. The rest of the table is broad agreement; this line is the fault line.

The transatlantic reserve war

The sharpest disagreement between Washington and Brussels is not whether reserves must be safe but where safe reserves belong. The GENIUS Act steers issuers toward Treasury bills, an arrangement Washington openly welcomes. Treasury Secretary Bessent has told markets he expects dollar stablecoins to grow into a market topping $2 trillion by 2028, which would make the sector one of the largest buyers of US government debt on earth. From that vantage, a stablecoin is a distribution channel for Treasuries as much as a payment tool.

MiCA pulls the other way, requiring a large slice of reserves to sit in European bank deposits. Tether CEO Paolo Ardoino has argued that this design creates “systemic risk,” because forcing tens of billions of dollars into fractional-reserve banks ties a stablecoin’s stability to the health of those banks. The warning is not abstract. When Silicon Valley Bank failed in March 2023, USDC briefly lost its peg precisely because a portion of its cash was stuck at a wobbling bank, not because its Treasury bills were unsafe. Each regime is, in effect, betting on a different failure mode: the American model concentrates exposure to the government bond market, while the European model concentrates exposure to its banking sector. Regulators on both sides are aware they have not eliminated risk so much as chosen which kind to carry.

This is also where the macro stakes show through. If the American bet pays off and the sector grows into the trillions, stablecoins become a structural buyer of short-term government debt, quietly financing a slice of the federal deficit while extending the dollar’s reach into places its banks never went. If the European approach holds, the euro area keeps more of its monetary plumbing inside supervised banks and closer to the central bank. Neither outcome is guaranteed, and both depend on rules that are still being drafted, but the reserve question has stopped being a compliance detail; it is industrial policy conducted through accounting standards.

Britain’s cautious middle path

The United Kingdom is writing a third model, and it splits the work between two regulators. The Bank of England oversees stablecoins judged systemic, while the Financial Conduct Authority handles the rest, an approach the two bodies set out in a joint policy paper published in June. After industry pushback, the Bank dropped its original plan to cap how many coins any individual could hold and replaced it with a simpler guardrail: a total issuance ceiling of 40 billion pounds per systemic stablecoin, meant to be raised and eventually removed as the market matures.

On backing, the British regime is more flexible than the American one during the ramp. A systemic issuer may hold up to 95 percent of its reserves in short-term UK government debt while it scales, with the remainder in unremunerated central bank deposits, moving toward a standard split over time. The Bank is collecting feedback through September and aims to finalize its Code of Practice by year end. The tone is unmistakably careful, and observers have called it one of the most cautious major frameworks yet written. Caution carries a cost, though: Britain is arriving late to a market the United States and Europe have already shaped, and its issuance ceiling is low enough that a single popular sterling token could brush against the cap while still modest by global standards.

The digital euro: a public-money counterweight

Behind Europe’s private stablecoin rules sits a public project with the same underlying anxiety. The digital euro is not a stablecoin; it is a central bank digital currency, public money in digital form, and its backers see it partly as a hedge against a future where dollar tokens dominate European payments. The legislation cleared a key parliamentary committee in June and entered final negotiations among the EU’s institutions in July, with the aim of an agreement by the end of 2026. Even on that timeline, the European Central Bank does not expect to launch before 2029, with a pilot involving dozens of payment providers slated for 2027.

The design tension is deposit flight. If Europeans could hold unlimited public digital money, they might drain commercial banks in a crisis, so the plan pairs a non-interest-bearing token with a cap on individual holdings. ECB Executive Board member Piero Cipollone has been the project’s most vocal advocate, arguing that stablecoins already erode banks’ deposits and transaction visibility and that a capped digital euro would shield banks while giving citizens a digital option. Whether or not the digital euro ever ships, its debate clarifies why Europe wrote MiCA the way it did: monetary sovereignty, not just consumer protection, is the animating concern.

What the rules mean for holders and traders

For anyone actually using stablecoins, the frameworks change four things. First, yield disappears at the source. Because issuers may not pay interest, any return marketed on a stablecoin comes from a third party, an exchange reward program or a lending market, each with its own risk and its own rules. Readers chasing a percentage are increasingly pushed toward products like the ones tested in our exchange staking yield comparison, where the yield and the counterparty risk are explicit rather than baked into the token.

Second, redemption becomes a legal right at a regulated issuer, which is the single most important protection a holder gains. Third, access fragments by geography: a token that trades freely in one jurisdiction may be delisted in another, as USDT’s European exit showed and as Treasury’s offshore proposal could extend. Fourth, and easy to forget, the rulebook governs issuers, not the open network. It cannot stop a drainer from emptying a wallet or a spoofed redemption site from harvesting keys, threats that keep evolving as phishing kits grow more sophisticated. A fully compliant stablecoin in a compromised wallet is still gone. Regulation shrinks issuer risk and reserve risk; it does not touch the risks that live between a user and the chain.

What to watch before January 2027

The next five months will decide how much of the GENIUS framework is settled law and how much is still a moving target when the statute switches on. The rulemaking is not academic: whichever proposals become final rules set the terms every US issuer and exchange lives by, and the pieces that stay in draft leave gaps that lawyers and lobbyists will fill. A handful of dates are worth marking.

• October 19, 2026: comments close on Treasury’s proposal defining when a stablecoin is issued, offered, or sold to a US person, the rule that reaches offshore issuers and exchanges.
• Late 2026: the Bank of England aims to finalize its Code of Practice for systemic sterling stablecoins after collecting feedback through September.
• End of 2026: EU institutions target a political agreement on the digital euro, the deadline the European Central Bank says it needs to hit to launch around 2029.
• January 18, 2027: the GENIUS Act takes effect on its eighteen-month backstop, whether or not every implementing rule is final.
• Through 2027: agencies turn the year’s proposals into final rules, each able to start a fresh 120-day clock if it lands before the backstop.
• July 18, 2028: digital asset service providers are barred from offering payment stablecoins not issued by a permitted issuer, the point at which the market fully sorts into compliant and non-compliant.

The throughline is convergence with friction. The United States, Europe, and Britain now agree on the shape of a safe stablecoin, full backing, no yield, real redemption, but they disagree on where reserves belong and how far each regime can reach across borders. For issuers, that means engineering one product that can satisfy several rulebooks at once. For holders, it means the token sitting in a wallet increasingly depends on which flag its issuer flies and which venue agrees to list it.

Frequently Asked Questions

What is the GENIUS Act, and when does it take effect?

The GENIUS Act is the first US federal law for payment stablecoins, signed in July 2025. It requires full reserve backing, bans interest to holders, and sets federal supervision for issuers above 10 billion dollars in outstanding tokens. The statute takes effect on January 18, 2027, although the detailed rules that enforce it are still being proposed through 2026.

Are stablecoins regulated by the SEC?

Mostly no. In a joint interpretation issued in March 2026, the SEC and the CFTC stated that payment stablecoins issued by a permitted issuer under the GENIUS Act are not securities. Day-to-day oversight falls to the Treasury, the OCC, the FDIC, and state regulators rather than the SEC.

Why was USDT removed from European exchanges?

Under Europe’s MiCA regulation, a stablecoin needs an e-money token authorization to trade on regulated venues. Tether chose not to seek that authorization, so MiCA-licensed exchanges removed USDT for users in the European Economic Area from July 1, 2026. Authorized tokens such as USDC remain available.

Can regulated stablecoins pay interest or yield?

No. Both the GENIUS Act and MiCA prohibit issuers from paying interest or yield to holders of a payment stablecoin. Any yield linked to stablecoins now comes from third parties such as exchanges or lending platforms, which carry their own risks and their own rules.

What does Treasury’s August 2026 proposal change for exchanges?

The proposal defines when a stablecoin is issued, offered, or sold to a US person and extends GENIUS Act liability to intermediaries. Exchanges would need to run due diligence on foreign issuers and could be held responsible for listing or redeeming non-compliant stablecoins, even in some offshore situations. The comment period runs through October 19, 2026.

Anneke de Vries covers financial regulation and crypto policy for HOGE Wire.