UK Budget clarifies the future tax treatment of crypto loans and liquidity pools

A technical amendment dated today

The UK government states in its Budget that an amendment linked to a tax deeming mechanism for cryptoasset loans and liquidity pools takes effect on November 4, 2026. That date does not mean the entire new tax treatment already applies to ordinary transactions. The Budget document primarily announces provisions for the Finance Bill and separates this technical amendment from the operative date of the main regime.

HM Revenue & Customs’ detailed policy paper instead sets the general start date at April 6, 2027. It targets individuals and trustees, rather than every company or every DeFi product. The stated objective is to defer Capital Gains Tax where a legal transfer of cryptoassets does not yet represent an economic disposal. The gain or loss would then be recognized when the user actually makes that disposal.

Three categories covered by the proposal

The text describes 3 situations: arrangements lending a single type of cryptoasset, certain borrowing arrangements, and automated market-making arrangements. For a qualifying loan involving the same asset type on entry and exit, the transfer would be treated on a no-gain-no-loss basis. The approach seeks to prevent a contractual deposit or withdrawal from triggering tax when the economic exposure has been retained.

For borrowing, the draft provides for an acquisition at market value and symmetrical treatment when assets of the same type are used for repayment. Collateral would normally be disregarded for capital-gains purposes unless it becomes clear that it will not be returned. In an automated pool, neutrality would cover only quantities corresponding to the assets originally contributed; a difference in quantity could still produce a gain or loss.

Neutrality is neither universal nor permanent

The proposed mechanism defers the tax event but does not remove tax on a later sale or another economic disposal. It also depends on technical definitions and eligibility conditions that must appear in the final legislation. No gain no loss should therefore not be read as a permanent exemption or as a guarantee that every lending, staking, or liquidity protocol will qualify.

The main regime is scheduled to apply to relevant transactions from April 6, 2027, subject to passage of the Finance Bill and its final wording. Today’s announcement provides a legislative marker, not individualized tax advice. Taxpayers will still need to verify how their arrangement, assets, and transitional rules are classified before changing a filing or concluding that no taxable event exists.