Bank of England opens the gate on systemic stablecoins — but keeps one hand on the wheel

On 22 June 2026, the Bank of England published a consultation paper that does something successive UK regulators have spent four years insisting they would not do: it loosens the leash on large, reserve-backed digital tokens used for payments. Under the proposed regime, so-called systemic stablecoins would no longer be subject to the per-holder limits the Bank had previously telegraphed. In their place sits a temporary aggregate issuance cap of £40 billion — a number that, in the dry language of central banking, marks the line between "useful payment instrument" and "threat to monetary stability".

The policy matters less for the figure itself than for what it signals. The Bank is conceding, in print, that tokenised sterling will exist at scale, that non-bank issuers will be allowed to operate it, and that the contest over who prints the digital money in British commerce will be settled by rules rather than by prohibition. Whether that counts as pragmatism or capitulation depends on where one stands on the historical relationship between the state, the banks it supervises, and the new private entrants trying to live in the space between them.

What the Bank actually proposed

Two specific moves are in the consultation text, and they pull in opposite directions.

First, the Bank scrapped the individual holding limits it had consulted on in earlier papers. The previous framework would have capped how much any single wallet could hold of a regulated stablecoin, on the theory that large retail or treasury balances in private money were a deposit-substitution risk the prudential system was not built to absorb. That idea is now off the table.

Second, the Bank is keeping a hard ceiling, but pushing it up and changing its object: instead of capping each user, the Bank will cap the total amount any single systemic stablecoin issuer can have outstanding, and that ceiling is set at £40 billion per coin. The cap is described as temporary, leaving the door open to revision once the Bank has observed how the market actually behaves.

Reserve requirements have also been eased. The full reserve composition and the duration mismatch the Bank will tolerate are spelled out in the consultation, and the net effect is that issuers can operate with a balance sheet that looks more like a short-duration money-market fund than a narrow-bank — but only up to the cap. Above the cap, the existing stricter regime continues to apply.

The counter-narrative: why a cap of any size is the story

Crypto-industry voices framed the earlier version of the rules — with per-holder limits — as a backdoor ban. The new text is being read, accordingly, as a concession.

That reading is incomplete. A £40 billion issuance cap is not a deregulatory event; it is a rationing system. It says, in effect: we accept that you will exist, we accept that you will grow, and we are telling you in advance the size at which the Bank's tolerance ends. Issuers who believe the UK market can absorb more than £40 billion of their token are, by construction, being told to look elsewhere for that scale — to other jurisdictions, to other regulators, or to a future in which the Bank relents.

The structural question is whether rationing in sterling, administered by Threadneedle Street, is more or less distortive than the open-ended competition the industry wanted. The Bank's argument, threaded through the consultation, is that the payments system is a public good and that the unit of account is the last thing a sovereign should let a foreign-domiciled issuer dominate.

The structural frame: monetary sovereignty in token form

What is being settled in this consultation is not a niche technical question about reserve assets. It is the question that has run underneath every stablecoin policy debate in every major jurisdiction since 2023: who, ultimately, gets to issue the money that settles a payment?

The US Treasury and the Federal Reserve have spent three years oscillating between enforcement-first rhetoric and grudging accommodation. The European Central Bank chose a different path — front-loaded the digital euro, tightened the e-money regime around it, and made clear that private euro stablecoins would live inside a defined lane. The Bank of England, characteristically, has been slower and more incremental: pilot the wholesale CBDC, study the retail case, watch the market, publish a paper, consult, re-consult.

The June 2026 paper is the moment the UK lands, tentatively, on a hybrid. The Bank will allow private issuance at scale, but only up to a number. Above the number, the Bank reserves the right to act. The retail digital pound, which the Bank has studied for years, is not in this paper. The unspoken assumption is that the cap buys the Bank time to decide whether the digital pound is still necessary, or whether a regulated, capped private layer plus a wholesale CBDC is enough.

The position of sterling in cross-border payments is the larger backdrop. Dollar-denominated stablecoins already dominate the on-chain dollar-payment market; a regulated, capped, sterling-denominated equivalent is partly a defensive move to ensure that the next generation of tokenised cross-border flows has a sterling rail that British institutions can use without first converting into US dollars. Whether £40 billion is enough to sustain that rail is a separate question — and one the consultation explicitly flags as under review.

Stakes and the forward view

For issuers, the practical work is narrow and immediate: model the new reserve rules, test the cap against realistic growth scenarios, and decide whether the UK is a market worth a full licence application. The cap is generous enough to support meaningful payment volumes for any of the large US dollar stablecoin issuers who want a sterling leg; it is small enough that a market leader with global ambitions will not be content to live under it for long.

For the banks, the consultation is the first concrete signal that the worst-case version of the policy — a regime that pushed stablecoin activity offshore while doing nothing to protect the deposit base — has been set aside. The banks' exposure is now bounded: a competitor currency that can grow to a defined size, with a regulator that retains the right to adjust that size as data comes in. Whether the banks use the breathing room to modernise their own payment infrastructure is, of course, a separate question that no consultation paper can answer.

For the Treasury, the lever is the interesting part. The cap is, in effect, a policy variable the Chancellor can argue over in a way that the prior per-holder regime was not. A growth-friendly Chancellor who wants London to remain a global stablecoin hub can press for the cap to be raised. A stability-first Chancellor can press for it to stay where it is. The Bank has handed the political branches a knob, and it is now a question of who turns it and in which direction.

What remains genuinely uncertain is how the Bank will react the first time a regulated issuer approaches the £40 billion line. The consultation is explicit that the cap is temporary, which means a second-order debate is already loaded: is the cap a guardrail on the way to a larger permanent regime, or a ceiling the Bank has no present intention of lifting? The text does not say. Issuers planning a multi-year UK strategy will need to plan for both readings, which is exactly the kind of regulatory uncertainty the Bank says it wants to reduce.

A second open question is enforcement of the cap in real time. A consultation paper can propose a ceiling; the harder problem is detecting and preventing issuance above it in a market that settles in seconds across multiple venues. The Bank has not, in the public text, detailed the supervisory architecture that will police the cap, and that gap is one the industry will press on in its response.

The net effect is a policy that is more permissive than the Bank's earlier drafts and more restrictive than the industry's lobbying asked for. That is, more or less, what a successful central bank consultation is supposed to produce — and the next few months of response letters will determine whether £40 billion is read as a starting point or a destination.

This article was reported and written by Monexus. The wire framing of the consultation has been broadly permissive; Monexus's read is that the headline number is less consequential than the structure of rationing it puts in place.

Wire provenance

This editorial synthesis draws on the following public wire/social posts:

• https://t.me/CryptoBriefing
• https://t.me/TSN_ua
• https://en.wikipedia.org/wiki/Bank_of_England