Bank of England weighs stablecoin supply caps

TLDR

The Bank of England is considering swapping proposed per-user stablecoin holding caps for temporary limits on total stablecoin supply to manage risk while giving the sector more room to grow.

1. BoE officials are exploring temporary guardrails on the total issuance of sterling stablecoins instead of strict caps on how much each person or business can hold.
2. This would still constrain systemic risk but could make it easier for issuers, banks, and payment firms to support larger transactions and corporate use cases in the UK.
3. Draft rules are due next month, with final decisions expected by late 2026, and the exact level and design of any supply caps will determine how competitive the UK is for stablecoins.

Deep Dive

1. Shift From Holding Caps

Deputy Governor Sarah Breeden said the Bank is reconsidering earlier plans to cap individual stablecoin holdings and is instead evaluating temporary guardrails on the total amount a stablecoin can issue in the UK, according to reporting from Bloomberg and Reuters summarised in a recent article.

The original consultation floated very tight limits, such as around 20,000 per person and 10 million per business for sterling payment stablecoins, which industry groups argued would be among the strictest regimes globally and could push activity offshore, as outlined in a policy recap.

A supply based cap aims at the same goal protecting bank funding and financial stability but targets aggregate exposure rather than micromanaging each wallet.

2. Effects On Issuers And Users

Moving to issuance caps would give stablecoin issuers and payment firms more flexibility to support high value payments and corporate flows, instead of bumping into per user limits on large transactions.

Breeden has also indicated that banks may be allowed to issue stablecoins through non deposit taking affiliates with separate branding, which would let traditional institutions participate while keeping stablecoin risks legally and operationally distinct, as highlighted in an industry summary.

Crucially, the BoE still expects strong backing and transparency requirements, so any sterling stablecoins operating under this regime will need high quality liquid reserves and detailed reporting on supply and backing.

3. Timeline And Open Questions

The Bank plans to publish draft stablecoin rules next month, with a full framework targeted by the end of 2026, according to a BoE focused overview.

At the same time it is pushing tokenization and near 24/7 settlement for core payment systems, arguing that regulated stablecoins and tokenized deposits can cut costs and speed up markets if trust is preserved, as Breeden outlined in a City Week speech summary.

Key unknowns are how tight any supply caps will be, whether they are truly temporary, and how UK rules will line up with EU MiCA and emerging US stablecoin laws, which will determine whether major issuers prioritise sterling stablecoins alongside dollar products.

Conclusion

The Bank of England is pivoting from rigid per user holding limits toward more flexible supply level guardrails that still aim to contain systemic risk.

If the final rules balance strong backing and transparency with workable issuance caps, the UK could become a serious venue for regulated sterling stablecoins and tokenized payment rails, rather than pushing innovation abroad.