TL;DR:
- HMRC will treat certain crypto lending and liquidity-pool disposals as “no gain, no loss” for Capital Gains Tax from April 6, 2027.
- The measure applies to individuals and trustees using cryptoasset loan and liquidity-pool arrangements, affecting about 700,000 people.
- Taxable gains or losses arise when users exit and receive a different quantity than they originally invested, while borrowed assets are valued at market price when borrowed, under the new framework.
HM Revenue & Customs is preparing to change how the U.K. taxes certain crypto lending and liquidity-pool activity, adopting a “no gain, no loss” approach for Capital Gains Tax. The measure, published Monday, will take effect on April 6, 2027, and applies to individuals and trustees using cryptoasset loan and liquidity-pool arrangements. Instead of triggering tax whenever assets enter these structures, HMRC is moving taxation closer to economic reality, deferring gains or losses until a user actually makes an economic disposal of the underlying crypto.
The change targets a problem created by older guidance. Under the current regime, crypto is treated as an investment asset, and selling, swapping or spending can count as a disposal for CGT, with rates of 18% for basic-rate taxpayers and 24% for higher-rate taxpayers. Stakeholders had warned that applying that logic to DeFi lending and pools produced disproportionate administrative burdens. The old framework made routine DeFi mechanics look like taxable exits, even when users were still economically exposed to the same asset position.
HMRC narrows taxable moments in DeFi activity
The rules cover three main scenarios. A disposal or acquisition of an interest in a single cryptoasset lending arrangement, in exchange for the same type of crypto originally invested, will be treated on a no-gain-no-loss basis. Borrowed cryptoassets will be treated as acquired at market value at the time of borrowing, with collateral disregarded for CGT purposes. For automated market-making liquidity pools run by smart contracts, entering the pool with the same type of crypto also receives no-gain-no-loss treatment. The common thread is matching tax to substance, not every technical transfer.
Exits remain the key taxable point. When a participant leaves a lending or liquidity-pool arrangement, no-gain-no-loss treatment continues only to the extent they receive the same quantity originally invested. Any difference between what went in and what comes back creates a gain or loss based on that difference. HMRC expects the change to affect about 700,000 individuals and says the framework should be easier to understand. The reform is pragmatic rather than radical, amending CGT law under the Taxation of Chargeable Gains Act 1992 while final costing awaits Office for Budget Responsibility scrutiny. It also shows how tax authorities are slowly learning to distinguish DeFi plumbing from true economic disposal in practice now.
