UK DeFi Tax Gets a Major Rewrite: What HMRC's 'No Gain, No Loss' Rule Means for You
If you've ever deposited crypto into a lending protocol or a liquidity pool and wondered whether that single action triggered a capital gains tax bill, the UK government has finally given you a definitive answer. Starting 6 April 2027, HM Revenue and Customs (HMRC) will treat certain disposals linked to crypto lending arrangements and liquidity pools as 'no gain, no loss' events, deferring any capital gains tax (CGT) liability until you make what the authority calls an "economic disposal." The change is expected to affect around 700,000 individuals and trustees across the UK, making it one of the most significant shifts in crypto tax uk policy in years.
What HMRC Actually Announced
HMRC published the policy on a Monday in July 2026, setting an implementation date of 6 April 2027. The core principle is straightforward: when you deposit crypto assets into a qualifying lending or liquidity pool arrangement, that deposit will no longer be treated as a taxable disposal under UK capital gains law, provided it meets the specified conditions. The gain or loss is instead deferred and crystallises only when an economic disposal takes place, typically when you exit the position and receive assets you can freely use or sell.
The three transaction types covered
HMRC has set out three categories of transaction that will qualify for the no gain, no loss treatment:
- The acquisition or disposal of an interest in a lending arrangement where the asset returned is the same type as the asset originally deposited.
- Borrowed assets acquired at market value under the terms of a crypto lending agreement.
- Similar transactions involving automated market makers (AMMs) in liquidity pools, subject to comparable conditions.
The phrase "same type of asset" is doing a lot of work here. If you deposit ETH and receive ETH back, you're likely covered. Whether wrapped tokens or rebasing tokens meet this standard is a detail HMRC will need to clarify before April 2027, and it's worth watching for the accompanying technical guidance.
Why HMRC is making the change
HMRC's stated rationale is fairness: the authority wants the tax treatment to reflect the economics of these arrangements, not just their legal form. Under the rules that have applied since 2022, depositing crypto into a lending protocol or a liquidity pool could be construed as a disposal at market value, even though the participant hasn't actually converted the asset into cash or a different asset in any meaningful economic sense. That created a paperwork burden and, in some cases, a CGT bill on a notional gain at the point of deposit, with the real cash only arriving later.
The authority explicitly acknowledged industry feedback, noting that alternative approaches would impose a "significant administrative burden" on taxpayers. That acknowledgement matters: it signals that HMRC is willing to adapt its guidance as DeFi matures, which is encouraging for the longer-term development of crypto tax policy in the UK.
How This Changes Your DeFi Tax Position
Before this announcement, the cautious reading of HMRC's 2022 guidance was that depositing crypto into a liquidity pool triggered a disposal because you typically receive a pool token (an LP token) in exchange, which could be a different asset. That meant you had to calculate a gain or loss at the point of deposit, track the cost basis of the LP token, and then calculate another gain or loss when you withdrew. Multiply that by dozens of transactions across a tax year and you can see why calculating DeFi tax was painful.
The deferral in practice
Under the new approach, the deposit itself does not trigger CGT. Your original cost basis carries through, and the gain or loss clock only starts ticking when you make an economic disposal, such as selling the underlying asset after withdrawal or swapping it for a different token. This is conceptually similar to how section 104 pooling already works for ordinary crypto holdings, but applied specifically to the in/out mechanics of lending and liquidity arrangements.
It's important to be clear about what the rule does not cover. Rewards earned from lending or providing liquidity, whether that's interest, trading fees distributed to LPs, or governance tokens received as incentives, are almost certainly still taxable as income when they arise. The no gain, no loss treatment is specifically about the disposal event on the principal deposit, not the rewards flowing from it. If you're unsure how your defi rewards are taxed, that's a separate question and one worth discussing with a tax adviser before filing.
What about staking?
The announcement focuses on lending and liquidity pools rather than proof-of-stake validation, so crypto staking tax treatment remains governed by existing HMRC guidance. Staking rewards are generally treated as income at the time of receipt, with any subsequent disposal of those rewards subject to CGT. The new rule doesn't change that position, though it does suggest HMRC is open to further reform conversations as the space evolves. If you want a clearer picture of how crypto is taxed in the UK more broadly, our piece on UK DeFi tax deferral for lending and liquidity pools provides the wider context.
Who Is Affected and What Should You Do Now
HMRC estimates roughly 700,000 individuals and trustees will be affected. That's a large number, and it includes not just seasoned DeFi users but also people who have deposited onto centralised lending platforms where the legal structure may qualify under the new rules. If any of the following applies to you, this change is directly relevant:
- You have deposited crypto onto a DeFi lending protocol and received a yield-bearing token in return.
- You have provided liquidity to an AMM such as a decentralised exchange pool.
- You are a trustee managing crypto assets that include DeFi positions.
Practical steps before April 2027
The rule doesn't take effect until 6 April 2027, but there are things you can do now. First, document all your current DeFi positions carefully: the date of deposit, the amount deposited, and the market value at the time of deposit. That cost basis information will carry through under the new rules and will matter when you eventually make an economic disposal. Second, don't assume that all your existing positions will automatically benefit from the new treatment without any action. HMRC is likely to publish technical guidance before the implementation date, and that guidance may include transitional provisions for positions opened before 6 April 2027.
Third, if you've already filed a Self Assessment return that treated a DeFi deposit as a disposal under the old interpretation, take advice on whether an amendment is appropriate once the technical guidance arrives. And if you're not yet registered for Self Assessment but you have DeFi income or gains, now is a good time to get that sorted. Our overview of Making Tax Digital and how to report crypto income explains the registration and reporting steps.
The Bigger Picture for UK Crypto Tax
This announcement sits within a broader UK policy direction that is gradually trying to make crypto regulation and taxation workable rather than simply punitive. The current CGT rates for crypto in the 2025-2026 tax year sit at 18% for basic-rate taxpayers and 24% for higher-rate taxpayers. Those rates haven't changed, but the point at which they bite on DeFi activity is shifting in a taxpayer-friendly direction.
The direction of travel is positive for anyone who has been avoiding DeFi protocols specifically because of the tax complexity. Simpler rules reduce the administrative cost of participation, and that's broadly good for the ecosystem. That said, simplicity in the headline doesn't always mean simplicity in the detail. The scope of "same type of asset," the treatment of reward tokens, and the handling of cross-chain bridge transactions all remain open questions that the technical guidance will need to address.
Keep an eye on HMRC's cryptoassets guidance pages for the technical legislation and accompanying notes, which should be published ahead of April 2027.
Frequently Asked Questions
From what date does the no gain, no loss rule apply?
HMRC has confirmed the rule takes effect from 6 April 2027, the start of the 2027-2028 UK tax year. Disposals made before that date are still governed by the existing guidance.
Does this mean I pay zero tax on my DeFi activity?
No. The rule defers CGT on the deposit and withdrawal of the principal asset, it doesn't eliminate it. Any gain is still taxable when you make an economic disposal. Rewards and interest earned from the arrangement continue to be taxable as income when received.
Does the rule cover all DeFi protocols, or only certain ones?
HMRC has specified conditions: the asset returned must be the same type as the asset deposited, and the transaction must fit within a qualifying lending arrangement or AMM liquidity pool. Whether a specific protocol meets those conditions will depend on the technical legislation, which hasn't yet been published in final form.
How does this affect crypto staking tax?
Staking (proof-of-stake validation) is not explicitly covered by this announcement. HMRC's existing position, that staking rewards are income at the point of receipt, remains in place. The new rule is specifically about lending and liquidity pool disposals.
What records should I keep for my DeFi positions?
Keep a complete log of every deposit: the date, the amount, the asset, and the sterling market value at the time of deposit. Also record every reward received and its value at receipt. This data underpins both your cost basis calculation and any income reporting, and you'll need it whether you're filing under the current rules or the new ones from 2027.
Source: Cointelegraph