The deep dive
Bank of England's systemic stablecoin draft: the regulatory perimeter moves from holder caps to issuer limits
The Bank of England published its policy statement and draft Code of Practice for systemic stablecoin issuers on 22 June, the first public draft of rules that will govern sterling-denominated stablecoins used at scale for payments. The draft matters less for what it permits than for what it reverses: the BoE has dropped its proposed holding limits on individuals and institutions, replacing them with concentration limits on issuers. Where the previous consultation proposed capping holdings at £20,000 for individuals and £10 million for institutions, the final draft caps a single issuer's systemic stablecoin supply at £10 billion, with exemptions for issuers meeting stricter reserve and operational requirements. The shift moves the regulatory choke point from the holder to the issuer, which changes the architecture.
The operational implication is that a treasury desk can now hold unlimited sterling stablecoins from a qualifying issuer, provided the issuer stays under the £10bn cap or meets the exemption criteria. The exemption criteria are the load-bearing detail: an issuer exceeding £10bn must back its stablecoins fully with central bank reserves rather than commercial bank deposits, and must meet higher operational resilience standards. That distinction will segment the market. Smaller issuers can operate on commercial bank reserves and stay under the cap; larger issuers will need direct central bank access, which is a different infrastructure build and a different regulatory relationship. The draft also relaxes the reserve composition requirement, allowing a broader set of high-quality liquid assets rather than mandating central bank reserves for all issuers, which the first consultation had implied.
For the stablecoin race, this is the clearest sterling regulatory framework published to date. The US has the GENIUS Act stablecoin provisions under review, with the FDIC's BSA and sanctions rules proposed in May but not yet final. The EU has MiCA, which is in force but applies everyday-usage protections rather than treating stablecoins as wholesale settlement infrastructure. The BoE draft is explicitly wholesale-first: it regulates systemic payment stablecoins, not consumer spending stablecoins, and the £10bn threshold is calibrated to payment-system risk rather than consumer protection. That positions sterling stablecoins as a wholesale rail, which is where the institutional adoption question sits.
The honest read is that the draft gives institutional treasurers a clearer operational picture than they had a week ago. A corporate treasury holding USDC and EURC can now model what a GBP-pegged equivalent looks like under UK regulation, and the answer is: unlimited holding capacity if the issuer stays compliant, but the issuer's reserve structure will determine whether it can scale past £10bn. The consultation closes 22 September 2026, so the final rules will not land before Q4 2026 at the earliest. For now, the framework is the reference point for sterling stablecoin product design, and the issuer-side cap is the new constraint.
Worth watching next
- The BoE's systemic stablecoin consultation closes 22 September 2026; the final rules will clarify whether the £10bn issuer cap and the reserve-composition bifurcation are the settled framework or whether the consultation moves the central bank again.
- The FSC's settlement-shortening roadmap expected October 2026 will be the first load-bearing output from the Korean capital market infrastructure taskforce; it will clarify whether Korea moves toward T+1 or T+0 and whether tokenised rails are in scope.
- ECB Executive Board member Piero Cipollone's 25 June speech "Central bank money for the digital era" is published but not yet parsed for operational detail; it may clarify how the GC collateral integration interacts with the digital euro project.
- The iCapital–UMBFS integration is processing production flows; whether other US fund admins adopt the same DLT rails or build bilaterally will determine if this becomes the alternatives-administration standard or stays an iCapital-UMBFS silo.
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