UK defers tax on DeFi lending and liquidity pools
The UK tax authority HMRC is introducing a ‘no gain, no loss’ rule for certain DeFi lending and liquidity pool transactions. Around 700,000 people in the UK will only owe tax at a genuine economic disposal, from 6 April 2027.
The UK's tax authority, HMRC, is changing how DeFi transactions are taxed. In a policy paper published on 13 July, HMRC introduces a ‘no gain, no loss’ rule for certain forms of crypto lending and liquidity pool participation. In practice, this means capital gains tax is deferred until someone makes an actual economic disposal — rather than being triggered simply by depositing or withdrawing assets.
What exactly changes?
The new rules cover three scenarios. Under single cryptoasset lending arrangements, a participant who acquires or disposes of an interest in exchange for the same type of cryptoasset falls under the no-gain-no-loss treatment. The same applies to automated market making via smart contracts holding two or more qualifying cryptoassets: both depositing and withdrawing an interest in exchange for the same type and quantity of asset does not count as a taxable event.
When does this take effect?
The measure takes effect from 6 April 2027, the start of the UK tax year. The final costing still needs to be certified by the Office for Budget Responsibility, but HMRC estimates the rule affects roughly 700,000 people active in crypto lending and liquidity pools.
Why this matters
Until now, UK DeFi users could unintentionally trigger a taxable event simply by depositing tokens into a lending protocol or liquidity pool — even before any actual gain was realised. That made active DeFi use unnecessarily complex and risky from a tax perspective. By taxing only genuine economic disposals, the UK aligns its rules more closely with how DeFi actually works in practice.
The bigger picture
The change fits a broader pattern of regulators worldwide adjusting their rules to the reality of DeFi, rather than applying existing tax frameworks literally to new technology. For users outside the UK, this is mainly interesting as a precedent: expect other tax authorities to grapple with similar questions.
Sources: GOV.UK (HMRC policy paper), Decrypt, The Block. Last checked: 15 July 2026.