Bank of England says clearing houses can already take tokenized collateral

The Bank of England said on 29 October that nothing in its rules stops a clearing house from accepting tokenized collateral, as long as it meets the usual standards. It also published draft guidance on how it would judge such requests. A clearing house stands between the two sides of a trade. It collects collateral, known as margin, from its members to cover losses if one of them fails. The guidance is only a proposal, open for comment until 12 February 2027.

Its reach is narrow. It covers tokenized versions of assets a clearing house may already accept: cash, financial instruments such as government bonds, bank guarantees and gold. A tokenized asset is one whose ownership is recorded and moved on a blockchain or a similar shared ledger. The Bank says the draft creates no separate regime. It sets out what a clearing house should have thought about when it asks, through the existing process, to accept a new form of collateral.

The test is the one applied to any collateral. A tokenized asset must still be possible to value, transfer and sell when needed, including in a crisis. The paper lists where that could go wrong. A ledger or its software could be changed by someone other than the clearing house. Access could depend on who holds the cryptographic keys. It asks what happens if a digital custodian holding tokenized government bonds for a clearing house fails or loses its licence. On open public blockchains, it notes, a transfer may only become more certain over time rather than final at a fixed moment.

The Bank is wary of automation. Smart contracts, programs that run on a ledger, could make margin calls and collateral swaps faster. But if many firms rely on the same code, the paper warns, their actions could move in step, so that everyone needs cash at the same time. That danger grows if the code is compromised or markets run almost around the clock. The safeguards needed may make the efficiency gains smaller than the theory suggests.

What the draft leaves out matters as much. The paper notes industry interest in stablecoins, tokenized money market funds and tokenized gold as collateral. Stablecoins may not currently count as highly liquid collateral at all, it says, and admitting them would need a change to the rulebook or a waiver. For now the Bank only asks for evidence on all three. Sarah Breeden, the deputy governor for financial stability, called the consultation part of "a major agenda between authorities and industry to enable the responsible adoption of tokenisation in financial markets".

Much is unsettled. The clearing-house rulebook the guidance rests on is itself still a draft, written to replace rules inherited from the European Union. The Bank expects to publish it in final form in the last quarter of 2026. It takes effect only once the Treasury repeals the inherited regime. The paper also says the results will depend on laws not yet changed, including on when a transfer is legally final and how tokenized collateral is treated if a firm goes bust.