UK regulators soften stablecoin stance as FCA finalizes crypto rules
The Bank of England dropped proposed holding caps and cut reserve requirements to 30% as mandatory authorization targets October 2027.
UK regulators took two concrete steps toward an implementable crypto regime: the FCA finalized crypto rules last month and the Bank of England eased key stablecoin constraints. The framework now points to mandatory authorization in October 2027, with more consultations still ahead.
Key Takeaways
- The FCA finalized crypto rules last month, laying out guidance on capital requirements, admissions and disclosures, and conduct expectations for crypto firms.
- The Bank of England removed previously proposed holding limits for fiat-pegged stablecoins and reduced the central-bank reserve requirement for issuers from 40% to 30%.
- Draft proposals published in November 2025 had included caps of £20,000 for individuals and £10 million for businesses holding systemic sterling stablecoins.
- Authorization under the UK’s new crypto regime is expected to become mandatory in October 2027, with further rulemaking still in the pipeline.
FCA Final Rules Land as the UK Moves From “Crypto Hub” Talk to a Rulebook
The UK’s Financial Conduct Authority finalized crypto rules last month, providing guidance on crypto firms’ capital requirements, admissions and disclosures, and the wider conduct framework. The move shifts the UK’s posture from broad ambition, framed in 2022 as becoming a “global cryptoasset hub,” toward a rulebook that UK-facing venues can actually map to compliance programs.
For exchanges, brokers, and fintechs serving UK users, the immediate market implication is operational: clearer expectations around capital and disclosures reduce the gray-zone risk that has historically made product launches and marketing brittle under the UK’s financial promotions (FinProm) regime. The FCA’s earlier approach was widely viewed as overly cautious, with slow authorization timelines and unclear operating rules, and that uncertainty has functioned like a liquidity tax on UK market access.
Bank of England Walks Back Stablecoin Holding Caps and Cuts Central-Bank Reserves to 30%
Within days of the FCA’s move, the Bank of England scrapped previously proposed limits on holdings of fiat-pegged stablecoins and lowered the reserve requirement issuers must hold at the central bank from 40% to 30%.
That rollback matters because the November 2025 draft had embedded hard scaling constraints directly into user behavior: individuals would have been restricted to holding no more than £20,000 of systemic sterling stablecoins, while businesses were capped at £10 million. Removing those caps reduces an administrative ceiling on adoption for both retail and corporate users, and it makes the “systemic” pathway less hostile to real payment and settlement use cases.
The reserve change is also a commercial lever. Requiring a smaller share of reserves to sit at the central bank can improve issuer economics, which feeds through to whether GBP stablecoin rails are viable at competitive fee levels.
What’s Still Tight: The £40B Systemic Sterling Stablecoin Circulation Cap
Even with holding caps removed, a hard constraint remains: a £40 billion cap on the circulation of any single systemic sterling stablecoin is still in place. The Bank of England has signaled an intention to revise or remove the cap as stablecoins become more embedded in the financial system.
For market structure, this is the limiter that still matters. A circulation cap is a ceiling on network effects, and it keeps any one GBP stablecoin from compounding into the kind of dominant liquidity pool seen in larger USD stablecoins. Until the cap is revised or removed, the UK can improve the on-ramp, but it still constrains the end-state size of a systemic issuer.
The Next Milestones: Systemic-Issuer Consultation and the October 2027 Authorization Deadline
The FCA has agreed to work with the Bank of England on the stablecoin regime and plans to consult later this year on how FCA rules apply once a stablecoin issuer is designated systemic by the Treasury. That points to a two-regulator pathway: Treasury designation triggers a shift in oversight intensity, with the Bank of England and FCA coordinating how requirements land in practice.
The industry timeline is now anchored to October 2027, when it becomes mandatory for any firm operating in the UK to be authorized under the new crypto regime. Between now and then, implementation milestones and signals of industry readiness will matter for whether UK users see broader venue access or more product gating.
Political continuity is a live variable. A new Labour leader is expected within weeks following Prime Minister Keir Starmer’s resignation, and the durability of this regulatory direction through that transition will shape how aggressively firms invest ahead of the 2027 deadline.
Marcus Hale’s Take: Why This UK Shift Matters for Stablecoin Rails and UK Market Access
I read the Bank of England’s holding-cap rollback as the most practical change in the stack. The threshold that matters is whether GBP stablecoins can scale into everyday settlement and payroll flows without compliance teams having to manage arbitrary per-user ceilings. Cutting the central-bank reserve requirement to 30% also helps, but it’s the removal of caps that stops the regime from kneecapping usage at the point of adoption.
The real test is whether the UK follows through on the £40 billion circulation cap and the systemic-issuer consultation later this year. If the cap holds and the systemic pathway stays heavy, this looks more like a sentiment catalyst than a fundamental shift. If those constraints loosen while the October 2027 authorization runway stays credible, the setup starts to look structural rather than narrative-driven, because it directly affects stablecoin liquidity formation and who can reliably serve UK users at scale.
