The Bank of England published draft rules for stablecoins on Thursday, laying out a regulatory framework that it aims to have fully operational by 2027. The proposed rules would ease reserve requirements for issuers and introduce explicit caps on how many coins can be in circulation. The move is the clearest sign yet that the UK is serious about bringing digital currencies under formal oversight.
Why the rules were drafted
Stablecoins — digital tokens designed to hold a steady value, usually pegged to the dollar or pound — have grown fast but remain largely unregulated. The Bank's draft framework is meant to prevent the kind of runs and collapses that have hit unbacked crypto assets in recent years. Under the proposed rules, issuers would have to hold high-quality liquid assets to cover every coin in circulation, though the requirement is less strict than some had expected.
The Bank says it wants to encourage innovation while protecting consumers and financial stability. It's a balancing act: too tight, and companies might move elsewhere; too loose, and the system could be vulnerable.
What the draft changes
The draft departs from earlier proposals in two key ways. First, the reserve requirement — the amount of liquid assets an issuer must hold — has been reduced. Earlier discussions had suggested a 100% backing with very narrow asset eligibility. The new draft allows a broader range of assets, though central bank deposits and government bonds still dominate.
Second, the Bank introduced issuance caps. No single stablecoin can exceed a certain portion of total UK payment volumes, though the exact threshold will be set after a consultation period. The caps are designed to prevent any one coin from becoming systemically important too fast.
These changes signal that the Bank is listening to industry feedback. Companies had warned that overly strict rules would kill the sector before it got started.
Issuance caps and reserve requirements
The details matter. Under the draft, an issuer must hold reserves equal to at least 100% of the face value of its stablecoins in circulation. That's standard. But the definition of qualifying assets has been widened to include short-term government securities and high-grade corporate bonds, not just cash and central bank deposits.
The cap on total issuance is tied to the size of the UK's retail payment system. If a stablecoin's market cap exceeds that threshold — the Bank hasn't said exactly where the line falls — the issuer would face additional oversight and possibly be forced to shrink.
For smaller issuers, the rules are lighter. Companies issuing less than £1 billion in stablecoins would face reduced reporting requirements. That's meant to let startups test products without drowning in paperwork.
Next steps for the industry
The consultation period is open now. The Bank expects to finalise the rules by the end of 2025, with the full regime going live in 2027. That timeline gives firms time to adapt — and gives the Bank time to see how the market evolves.
One unresolved question is how these rules will interact with the Financial Conduct Authority's parallel work on cryptoassets. The FCA oversees consumer protection and market conduct; the Bank handles systemic risk and payment systems. Their boundaries are still being drawn.
Another open issue is international coordination. Stablecoins don't stop at borders. The Bank says it will work with other regulators, but it hasn't said how it would handle a foreign-issued stablecoin used by UK residents.
The draft rules are a starting point. The real test will come when the first licence applications arrive — and when a real-world crisis tests the safeguards the Bank is building.
