A New Kind of Sterling Turns Up in the Payments System
Walk into a busy high-street coffee chain in October 2027 and the card reader may not care whether the money behind your tap comes from a bank deposit or from a sterling-backed token issued by a regulated fintech. That is the practical end point of a decision the Financial Conduct Authority and the Bank of England confirmed on 30 June 2026: after roughly three years of consultation, the UK now has a finished rulebook for stablecoins denominated in pounds. It is one of the most consequential pieces of financial regulation to land this year, and it arrived with far less fanfare than the Digital Pound project, which is a separate Bank of England initiative and easy to confuse with this one.
The distinction matters. A digital pound, if it is ever issued, would be a central bank liability — cash reimagined as a token, created directly by the Bank of England. A sterling stablecoin is something else entirely: a privately issued digital token, created by a company such as a fintech or a payments firm, that promises to hold £1 of backing assets for every £1 of tokens in circulation and to redeem them on demand. Tether and Circle already run dollar versions of this at global scale, together moving more sterling-equivalent value in a week than most UK challenger banks process in a year. Until this summer, nobody issuing a pound equivalent from London had a finished set of rules to follow, only a patchwork of anti-money-laundering registration and informal Bank of England guidance. That gap is precisely why several fintechs quietly parked pound-stablecoin projects in 2024 and 2025 rather than launch into regulatory uncertainty.
What the FCA's Rulebook Actually Requires
The headline document is Policy Statement PS26/10, published alongside three companion statements covering market abuse, regulated cryptoasset activities and the prudential regime for crypto firms. Buried in the technical detail are a handful of rules that will shape how these tokens behave in practice. Redemption is the big one: any UK-issued qualifying stablecoin must be redeemable for pounds within one business day, a T+1 standard that mirrors how quickly a bank must process a transfer request. The FCA also cut the capital charge issuers must hold against their own operational risk from 2% to 1% of tokens in issue, a softening from the original 2025 proposal that industry lobbying clearly won. Marketing rules tighten too: promotions have to spell out, in plain language, that a stablecoin is not a savings product and carries no interest by default. Firms also have to publish monthly attestations of their reserve holdings, so anyone can check that the pounds backing the tokens are actually sitting where the issuer says they are.
Authorisation itself follows a staged timetable rather than a single hard deadline. Between September 2026 and February 2027, every firm that wants to issue or deal in cryptoassets in the UK — not just stablecoin issuers — must apply to the FCA for authorisation under the new regime. Full stablecoin-issuance permissions, the specific licence a firm needs to legally mint a sterling token, only become mandatory from 25 October 2027. Firms already registered under the older Money Laundering Regulations can keep operating in the gap, which is exactly the kind of transitional arrangement that tends to produce headlines about "loopholes" eighteen months from now.
Where the Bank of England Steps In
Not every stablecoin issuer answers to the Bank of England. Only tokens that HM Treasury formally designates as systemic — judged on transaction scale, how interconnected the issuer is with the rest of the payments system, and how easily users could switch to something else — pick up an additional layer of prudential oversight. For those, the Bank's June 2026 policy paper settled on a 70/30 split for backing assets: 70% in short-term UK government debt, 30% parked as unremunerated deposits at the Bank itself, a mix chosen to avoid the kind of liquidity mismatch that has caused stablecoin runs elsewhere in the world.
The more interesting reversal is on holding limits. The Bank's original November 2025 consultation would have capped individual holdings at £20,000 and business holdings at £10 million per person or firm — numbers designed to stop a systemic stablecoin from siphoning deposits out of ordinary bank accounts too quickly. That proposal met fierce resistance from both fintechs and consumer groups, for opposite reasons, and it didn't survive contact with the final rules. In its place sits a temporary issuance guardrail of £40 billion per systemic stablecoin product, a cap on the total token supply rather than on what any one person can hold, which the Bank says it intends to lift once it's satisfied the risk to bank lending has passed.
What This Means If You Bank With Monzo, Starling or a High-Street Name
For most people reading this on a phone between paying rent and checking a savings app, nothing changes on 25 October 2027 itself. No major UK retail bank or neobank has announced plans to issue its own stablecoin, and the firms most likely to launch one first are payments specialists and crypto-native companies rather than the banks holding your current account. What does change gradually is optionality: expect the first sterling stablecoins to show up as a settlement rail for cross-border business payments and, later, as an option inside crypto exchange apps for moving pounds in and out without a bank transfer delay.
Here's the recommendation worth committing to now, not hedging on: don't move savings out of an FSCS-protected account into a stablecoin wallet chasing convenience or a marketing promotion, because stablecoins are not deposits and the £85,000 Financial Services Compensation Scheme limit does not apply to them, full stop. The Prudential Regulation Authority made this point explicitly in two "Dear CEO" letters this year, insisting that banks keep FSCS-protected deposits clearly separated from any e-money or stablecoin product they might offer alongside them. Issuers are also expected to hold customer funds in a separate, insolvency-remote entity, so a stablecoin firm going bust doesn't automatically drag its banking partner down with it. If a banking app ever blurs that line in its interface — showing a stablecoin balance next to your protected savings without a clear label — treat that as a red flag, not a feature.
The Catch Nobody's Marketing Slide Mentions
Regulation this careful has a cost, and the cost is speed.
The FCA's own consultation responses are unusually candid about a tension baked into this whole framework. Rules strict enough to make a stablecoin genuinely safe — same-day redemption, hefty capital buffers, a prudential regime as tough as a bank's — also make it expensive and slow to launch one. One trade publication put it bluntly this month: the rules the FCA is building to make sterling stablecoins trustworthy could be the same rules that stop the market growing large enough to matter. It's not an unreasonable worry. Dollar stablecoins scaled the way they did partly by operating in regulatory grey zones that UK issuers no longer have available to them. Whether that makes the UK regime more credible or simply slower is a fair question, and honestly, it's too early to say which.
Whether that trade-off proves right will depend on decisions still ahead of us, including whether the Bank of England actually lifts the £40 billion guardrail once the Code of Practice consultation closes on 22 September 2026, and how many firms bother applying in that September-to-February authorisation window rather than waiting to see how competitors fare first. What's already settled, though, is the shape of the regime itself — and after three years of green papers and consultation responses, that alone counts as progress.
A Quick Glossary Before the Rules Bite
- Qualifying stablecoin — a token backed 1:1 by fiat currency (in this case, pounds) and issued by a UK-based firm, as distinct from algorithmic or crypto-backed tokens, which sit outside PS26/10 entirely.
- Systemic designation — the trigger that brings Bank of England prudential rules on top of FCA conduct rules; most issuers will start life below this threshold.
- T+1 redemption, in plain terms, means asking for your pounds back on a Tuesday should get them into your account by Wednesday close of business — not "eventually", and not at the issuer's discretion.
- Digital pound — a separate, still-unconfirmed Bank of England project; do not conflate it with privately issued stablecoins, to name the confusion that trips up most casual coverage of this topic.
None of this requires you to open a crypto wallet before Christmas. But if a payments app, a business banking platform or a cross-border transfer service starts advertising "instant sterling settlement" over the next year, you'll now know exactly which rulebook it's supposed to be following — and which questions to ask if it isn't.