The United Kingdom has some of the clearest cryptocurrency tax guidance in the world — but many UK crypto investors are still unaware of their obligations. In this complete guide we explain exactly how HMRC taxes cryptocurrency in 2026 and what you need to do to stay compliant.
Does HMRC Tax Cryptocurrency?
Yes. HMRC treats cryptocurrency as a capital asset — similar to shares and property — rather than as currency. This means that disposing of cryptocurrency triggers Capital Gains Tax, and receiving cryptocurrency as income triggers Income Tax.
HMRC has been actively enforcing crypto tax compliance since 2019, obtaining transaction data from UK crypto exchanges and sending nudge letters to taxpayers who may have undeclared crypto gains.
What Is a Disposal?
A disposal is any transaction that triggers Capital Gains Tax. In the context of cryptocurrency, disposals include selling crypto for pounds sterling, trading one cryptocurrency for another, using cryptocurrency to purchase goods or services, and gifting cryptocurrency to anyone other than a spouse or civil partner.
Buying cryptocurrency with pounds sterling is not a disposal and does not trigger any tax. Transferring crypto between your own wallets is not a disposal.
Capital Gains Tax on Crypto in the UK
When you dispose of cryptocurrency at a profit, the gain is subject to Capital Gains Tax. The CGT rate depends on your total taxable income.
Basic rate taxpayers pay 10 percent on crypto gains. Higher and additional rate taxpayers pay 20 percent. Every UK taxpayer has an annual Capital Gains Tax allowance — the amount you can gain tax-free each year. This allowance has been significantly reduced in recent years — check the current HMRC guidance for the exact figure applicable to your tax year.
The Share Pooling Rule
HMRC applies a share pooling rule to cryptocurrency that is unique to the UK. Rather than tracking the cost basis of individual coin purchases, HMRC requires you to calculate a pooled average cost across all purchases of the same type of cryptocurrency.
For example, if you buy 1 Bitcoin for 20,000 pounds and later buy another 1 Bitcoin for 40,000 pounds, your pooled average cost is 30,000 pounds per Bitcoin. When you sell 1 Bitcoin for 50,000 pounds, your gain is 20,000 pounds — not 10,000 pounds as it would be under FIFO.
The 30-Day Rule
HMRC has a 30-day bed and breakfast rule that prevents you from selling crypto at a loss and immediately repurchasing it to crystallise a loss for tax purposes. If you sell crypto and repurchase the same cryptocurrency within 30 days, the sale is matched against the repurchase rather than your pool — effectively disallowing the loss.
Income Tax on Crypto in the UK
Crypto received as income is subject to Income Tax rather than Capital Gains Tax. This applies to staking rewards received as payment for validating transactions, mining income, airdrops received in exchange for a service, and crypto received as employment income.
The income is taxed at your marginal Income Tax rate — 20 percent for basic rate taxpayers, 40 percent for higher rate, and 45 percent for additional rate.
Best Crypto Tax Software for UK Investors
Koinly offers excellent UK support with HMRC-compatible reports including the Capital Gains Summary and the transaction log required for self-assessment tax returns. CoinTracker and CryptoTaxCalculator also support UK tax rules including the share pooling calculation.
Key Takeaways
- HMRC treats crypto as a capital asset — disposals trigger Capital Gains Tax
- Trading crypto for crypto, using crypto for purchases, and gifting crypto are all taxable disposals
- UK crypto gains are taxed at 10 percent for basic rate taxpayers and 20 percent for higher rate
- The share pooling rule requires calculating an average cost across all purchases of the same asset
- The 30-day rule prevents selling and immediately repurchasing to crystallise losses
- Use Koinly to generate HMRC-compatible tax reports automatically