How Are Crypto Taxes Calculated in the UK: A 2026 Guide for Traders

Overview

In the UK, cryptocurrency is treated as property, not money.
This means most crypto activity is taxed under Capital Gains Tax (CGT), with some cases falling under Income Tax.

HMRC has not changed this position in 2026. What has changed is enforcement:
exchanges now share more data, and HMRC expects accurate, transaction-level reporting.

If you trade crypto, you are responsible for calculating and reporting your tax correctly — even if no one contacts you.

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What Counts as a Taxable Crypto Event

HMRC considers the following actions as disposals, which may trigger Capital Gains Tax:

• Selling crypto for GBP or another fiat currency
• Swapping one cryptocurrency for another (e.g. BTC → ETH)
• Spending crypto on goods or services
• Gifting crypto (except to a spouse or civil partner)

Each disposal must be recorded with its GBP value at the time.

How Capital Gains Are Calculated

For every disposal, HMRC uses this formula:

Capital Gain = Disposal value – Cost basis

Your cost basis includes:

• Purchase price
• Transaction and exchange fees

You only pay CGT if your total gains exceed the annual allowance (£6,000 for the 2025–2026 tax year).

Important HMRC Rule: Section 104 Pooling

UK traders must use Section 104 pooling, which averages the cost of identical tokens.
FIFO and LIFO are not allowed for UK tax reporting.

Manually applying pooling across hundreds of trades is error-prone.

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Income Tax: Staking, Mining, and Airdrops

Crypto received as a reward is treated as income at its GBP value on the day you receive it.

This includes:

• Staking rewards
• Mining income
• Some airdrops

Later, when you sell those tokens, Capital Gains Tax applies again to any increase in value.

This two-step taxation is one of the most common reporting mistakes.

Tax Rates in 2026

• Capital Gains Tax

  • 10% for basic-rate taxpayers
  • 20% for higher-rate taxpayers

• Income Tax

  • 20%–45% depending on your income band

You can reduce your tax bill by:

• Claiming allowable fees
• Offsetting capital losses
• Carrying losses forward to future years

How to Report Crypto to HMRC

Crypto tax is reported through Self Assessment.

You must:

1. Declare capital gains in the SA108 Capital Gains Summary
2. Declare staking or mining income as taxable income
3. Keep full records for at least 5 years

HMRC may request:

• Transaction dates
• GBP values
• Wallets and exchanges used
• Trade history and references

Start tracking crypto transactions

Common Mistakes UK Traders Make

• Forgetting that crypto-to-crypto swaps are taxable
• Ignoring transaction fees
• Using FIFO instead of Section 104 pooling
• Missing staking income
• Losing historical trade data when switching exchanges

These errors usually surface during an HMRC review — when it’s already too late.

Increased HMRC Oversight in 2026

The UK is implementing international crypto reporting standards, including automatic data sharing from exchanges.
This means HMRC can already see more than many traders expect.

Accurate records are no longer optional.

Conclusion

Crypto taxes in the UK follow clear rules:

• Track every transaction
• Apply Section 104 pooling
• Report gains and income correctly
• Keep records long-term

Doing this manually is possible — but inefficient.

Open CryptoTaxBridge

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