Bridging the Atlantic, Part II: What’s New in UK Stablecoin Policy?
In August we compared the upcoming stablecoin regimes in the US and UK. Since that post, the UK has moved forward in shaping how these digital assets should be regulated as part of the financial system, especially if they become widely used for everyday payments. This post provides an update to describe the significant changes in direction in the latest UK proposals from the Bank of England and HM Treasury. The Bank of England has the mandate to create rules for ‘systemic’ stablecoins given their potential impact on financial stability, while HM Treasury (part of the UK government) is creating the detailed law that will give UK regulators the powers they need (and set the overall guidelines) to develop regulation.
The big change in the UK is the focus on “systemic” stablecoins, and how they and their issuers are to be regulated. The concept of systemic stablecoin regulation does not appear directly in US law under the GENIUS Act, although provisions of GENIUS require regulators to evaluate stablecoins and their issuers for potential threats to financial system stability. Below, we focus on the UK proposal.
Why the UK is Focusing on Stablecoins Now
Stablecoins (digital tokens designed to maintain a stable value against a fiat currency) remain the fastest-growing form of money in the digital economy. They are a key pillar of our token classification system, which you can read more about here. The UK government and regulators have been clear: if stablecoins are going to function like money in daily life and not just in crypto trading, then they must be subject to a regulatory framework that protects consumers and safeguards financial stability. The goal is to integrate stablecoins responsibly into the UK’s financial architecture, while also supporting the innovation they represent.
This will go hand-in-hand with proposals for comprehensive crypto regulation that were originally introduced in 2023 through proposed changes to the Financial Services and Markets Act. The UK government (HM Treasury) ‘laid’ secondary legislation in December 2025 that would put much of the 2023 updates into effect, including defining stablecoins as regulated financial instruments and regulating their issuance.
The Core Focus: “Systemic” Stablecoins
In coordination with HM Treasury and the FCA, the latest Bank of England consultation paper was published in November 2025. Its focus is on pound sterling-denominated “systemic” stablecoins. These are stablecoins that become so widely used in everyday retail payments that, if something went wrong, they might affect not only consumers and businesses at scale, but the wider financial system as well.
What makes a stablecoin systemic? While the full details will be clarified in the final regulation, it’s essentially based on how many people and businesses use it (and for what kinds of payments) and the extent of its interconnections with the financial system. HM Treasury has the power to designate stablecoins as systemic and once it has done so, the stablecoin would fall under a joint regulatory regime, with the Bank of England looking after financial stability and prudential requirements, and the Financial Conduct Authority (FCA) overseeing consumer protection and conduct under its own upcoming stablecoin regime.
Non-systemic stablecoins will be regulated solely by the FCA under existing and upcoming cryptoasset rules. A non-systemic stablecoin, for example, is one used for a day-to-day payment or as an on-/off-ramp to the crypto ecosystem that does not have a critical mass of users in the UK.
Note that even with this consultation paper, much of the regulation of stablecoins, their issuers and their usage remains subject to additional rulemaking. Those looking for certainty need to remain patient, notwithstanding that the government has been considering these issues since at least 2023.
New Backing Asset Rules: A Balancing Act
One of the biggest changes in the new proposals is how issuers of stablecoins designated systemic would be required to back the coins they issue; that is, what assets they must hold to ensure that coins remain redeemable at a fixed value in pounds sterling.
Under the draft proposals:
At least 40% of backing assets must be held as unremunerated (non-interest-bearing) deposits at the Bank of England - effectively very liquid central bank money.
Up to 60% can be held in short-term UK government debt (gilts), which can earn a return and help make issuer business models viable. This is a shift from earlier proposals that would have required almost all backing assets to be held at the central bank with no interest.
The Bank of England is also considering offering liquidity lines to issuers, and proposes allowing them to repo out backing assets as a means of accessing additional liquidity.
The idea is to strike the right balance: making sure issuers can always meet redemption requests even in a crisis, while also not squeezing them out of business by forcing ultra-conservative backing rules.These requirements will make systemic stablecoin issuers look a lot like so-called narrow banks and the stablecoin itself a lot like a central bank digital currency.
“Step-Up” and Transitional Rules
There are also transitional measures to support issuers that are systemic from the start. Such firms could temporarily hold up to 95% of their backing assets in short-term government debt during their early growth phase, before scaling into the full 60/40 structure.
This “step-up” regime is designed to give new market entrants space to grow while still ensuring they eventually meet stringent safeguards. It is designed to limit worries of a ‘cliff-edge’ from transitioning from the FCA to the BoE’s systemic regime.
Consumer Safeguards and Limits
Controversially, to reduce the risk that stablecoins could pull deposits out of the banking system too quickly (which could affect credit and financial stability) the proposals include temporary holding limits per systemic stablecoin:
£20,000 per individual
£10 million per business (with exemptions possible for some business uses)
These limits are framed as transitional, with regulators monitoring whether they can be adjusted as the market matures. It is not clear how these limits would be enforced from a practical perspective.
Other Noteworthy Requirements in the Consultation
A few other important parts of the consultation include:
Direct payment system access: Systemic stablecoins should be able to settle with traditional money systems, making redemptions and transfers smoother.
Safeguarding backing assets: Reserves must be ring-fenced and held in the UK, with clear legal claims for coin-holders.
Subsidiary requirements: Foreign stablecoin issuers targeting the UK market would need UK-based and regulated subsidiaries.
Birdseye View
While the UK continues to develop and adapt its framework for stablecoins, it seems to be still mired in basics and with overlap between the FCA and BoE’s roles. The BoE’s updated stablecoin policy proposals reflect a pragmatic approach: significant safeguards to protect users and financial stability, flexibility to support issuer viability, and a clear path toward integrating stablecoins into the payments system, which will allow them to be part of commerce in the UK. But some basic concepts still need to be clarified. And the UK is running out of time. Whether this proposed framework will help the UK compete with the US’s crypto-friendly stance and the EU’s MiCA regime remains a live debate.
It’s important to note that these are draft proposals open for comment, and we expect there will be robust discussion between the Bank of England and industry on the details. They are not set in stone and may be subject to change. We will continue to watch with interest for new developments and await the final rules.