Cryptocurrency Tax in the UK 2026 — The Complete HMRC Guide

HMRC published the Cryptoassets Manual in 2018 and has updated it through 2024 to cover DeFi, lending, and staking. The starting point: HMRC treats cryptocurrency as property, not as currency, for tax purposes.

For individuals holding crypto as an investment, every disposal is a chargeable event for capital gains tax. Disposal includes selling for fiat, swapping one token for another, spending crypto, and gifting (except to a spouse or civil partner). Loss of private keys is also treated as a disposal under HMRC rules, provided a negligible value claim is filed.

HMRC applies share pooling rules to identify which units were disposed of. The Section 104 pool aggregates all units of the same token into a single pooled cost. Two anti-avoidance rules override the pool: the same-day rule matches disposals against acquisitions on the same date, and the 30-day bed-and-breakfast rule matches against acquisitions in the 30 days following a disposal.

The trading-versus-investment test matters where activity is frequent and organised. HMRC applies the badges of trade: frequency, intent, ownership period, financing, and expertise. Most retail crypto holders fall within investment treatment. Where the test produces a trading conclusion, profits become income subject to income tax and National Insurance rather than CGT.

Special HMRC rules apply to crypto received through DeFi lending and staking. Whether the receipt is income or a capital transaction depends on whether the user retains beneficial ownership and on the economic substance of the arrangement, as set out in the Cryptoassets Manual.

Records must be kept in pounds sterling at the rate prevailing on each transaction date, according to HMRC.

For the 2026/27 tax year, HMRC charges CGT on cryptoassets at 18% for basic-rate taxpayers and 24% for higher and additional-rate taxpayers. The rates apply to gains exceeding the annual exempt amount of £3,000 according to HMRC.

The crypto CGT rate aligns with the rates for residential property after the Autumn Budget 2024 reforms. The starting rate is determined by combining the gain with other UK-taxable income for the year.

Income tax applies where crypto is received as employment income, mining rewards from organised activity, certain staking rewards, airdrops connected to services performed, or trading income. Rates are 20% basic, 40% higher, and 45% additional, plus National Insurance where the activity rises to self-employment.

Mining as a hobby produces miscellaneous income at marginal rates. Mining as a trade falls into self-employment with NI implications according to HMRC.

Airdrops received without any action or expectation on the part of the recipient may fall outside the income tax net, with full proceeds taxed only when later disposed of under CGT. Airdrops received in return for activity are income at market value when received.

Losses on crypto disposals can be set against other capital gains in the year, with excess losses carried forward indefinitely provided they are claimed within four years according to HMRC.

The UK has no long-term holding discount or preferential rate for crypto held over a particular period. CGT applies at the same 18%/24% rates regardless of how long an asset was held.

The main planning levers under HMRC rules are the £3,000 annual exempt amount, transfers between spouses (which are exempt from CGT and effectively double the exemption for couples), and timing disposals across tax years to use the exemption twice.

The 30-day bed-and-breakfast rule prevents wash-sale tax planning. Selling crypto at a loss and re-buying within 30 days causes HMRC to match the disposal against the re-acquisition, neutralising the loss claim.

Losses carried forward have no time limit once claimed, but the four-year claim window means losses must be notified to HMRC within four tax years of the loss arising.

HMRC's Connect data analytics system aggregates information from banks, employers, exchanges, and overseas tax authorities under Common Reporting Standard agreements. HMRC has run formal exchange data requests since 2019, targeting Coinbase UK, Binance UK, and other UK-based crypto businesses.

HMRC launched a dedicated crypto disclosure facility in November 2023 inviting voluntary disclosure of unpaid CGT and income tax. The facility offers reduced penalties for taxpayers who come forward before being contacted.

The OECD Cryptoasset Reporting Framework (CARF) applies in the UK from 1 January 2026 according to HMRC consultation responses. CARF requires reporting cryptoasset service providers to collect and report identity and transaction information annually.

HMRC has issued nudge letters to suspected non-disclosers in waves since 2019. The letters typically reference data from named exchanges and invite the taxpayer to amend prior returns or face higher penalties.