Circle Internet Group shares were up 6.0% at $85.29 at 2:24 p.m. New York time on Thursday, while Coinbase gained 5.0% to $172.68. The moves coincided with a broader crypto rally, and the day’s buying cannot be attributed to one British rule change. The latest UK legislation nevertheless removes a specific source of friction: some payment activity involving qualifying stablecoins will sit outside the new crypto safeguarding regime.
That is useful for issuers and payments firms, though it is not an exemption from regulation. The final statutory instrument laid by HM Treasury on September 15 keeps issuance of qualifying stablecoins inside the Financial Services and Markets Act framework. The Financial Conduct Authority’s new crypto regime is scheduled to take effect on October 25, 2027.
What the payments carve-out changes
The instrument narrows the boundary between two rulebooks. A firm temporarily holding qualifying stablecoins while carrying out a payment transaction will not also be treated as providing the separately regulated cryptoasset-safeguarding service. Dealings and arrangements involving UK-issued qualifying stablecoins that are already authorized under the broader financial-services regime are likewise carved out of overlapping crypto activities.
The practical purpose is to avoid regulating the same payment chain twice. It also removes certain backing-asset arrangements from the crypto safeguarding perimeter and adds targeted exclusions for activities such as proprietary trading, market making and purely technical services. None of those changes turns a stablecoin into unregulated cash. Issuers still need authorization, asset backing, redemption arrangements and the other controls that will accompany the final FCA rules.
The timetable is now the more important investor fact. The FCA said on September 16 that applications open on September 30, 2026. Its preparation notice gives firms until February 28, 2027 to apply and warns that an existing registration or permission will not automatically carry over. A late or incomplete application could interrupt a firm’s UK business when the regime begins.
Why Circle investors should care
Circle’s USDC is the obvious listed-company exposure to clearer stablecoin payments rules. USDC circulation reached $73.3 billion at June 30, up 19% from a year earlier, according to Circle’s second-quarter report. Onchain USDC transaction volume was $14.8 trillion during the quarter, up 151%.
For shareholders, the conversion of stablecoin growth into reserve income is the durable question. Circle shares economics with distribution partners, and lower interest rates reduce the return on its reserves. Reserve income was $668 million in the second quarter, 95% of company revenue. Average USDC circulation grew 25%, yet a 66-basis-point decline in the reserve return limited reserve-income growth to 5%. A cleaner UK payments perimeter can improve distribution options; it cannot remove that rate sensitivity.
USDC itself was effectively unchanged near $1.00 on Thursday afternoon. That matters because the regulatory benefit is about access and operating certainty, not a price gain in the token. The Bank of England is separately developing rules for stablecoins judged systemic for payments; its draft framework remains open for feedback through September 22, with final rules expected by year-end.
The risk behind the relief
The strongest counterargument is that the legislation clarifies plumbing more than economics. Firms still face a long authorization process, detailed prudential rules and the possibility of a second layer of central-bank oversight if their coin becomes systemically important. Overseas providers also have to decide whether UK revenues justify the compliance cost. The market may be pricing a friendlier direction before those costs are known.
For Circle shareholders, the next checkable dates are September 30, when the FCA application window opens, and the Bank of England’s final stablecoin code expected by the end of 2026. The better signal will be whether major payments firms seek authorization and integrate USDC under the new perimeter—not Thursday’s share-price move by itself.