Cryptocurrency Capital Gains Tax Calculator

Yes. HMRC treats cryptocurrency as a capital asset. Selling, swapping, spending, or gifting crypto (except to a spouse) triggers Capital Gains Tax. Mining and staking income may also be subject to Income Tax.

The Capital Gains Tax Annual Exempt Amount is £3,000 for 2025/26. You can make gains up to this amount without paying CGT. This applies to all assets including crypto.

Crypto is not residential property so the lower residential rates don't apply. Crypto CGT: 18% basic rate, 24% higher rate (from Autumn Budget 2024 — previously 10%/20%).

HMRC requires all crypto of the same type to be treated as a single "pool". When you sell, you use the average cost basis of the entire pool, not specific purchase lots.

HMRC's "bed and breakfasting" rule: if you buy and sell the same crypto within 30 days, the sale matches against the most recent purchase (not the pool). This prevents immediate repurchase to reset the cost basis.

Yes. Swapping crypto is a disposal for CGT purposes. The gain is calculated using the GBP value of the crypto received at the time of the swap.

Yes. Every trade between cryptocurrencies is a taxable disposal. You must calculate the GBP value at the time of each trade and report any gains.

Yes. Report losses via self-assessment to claim loss relief. Crypto losses can offset other capital gains in the same year or be carried forward to future years.

Keep records of: every purchase (date, amount, GBP value), every disposal (date, amount, GBP value), exchange fees, wallet transfers, and staking/mining receipts. HMRC expects records for 5+ years.

Yes. The taxable event is the disposal (sale/swap), not where you store the crypto. Moving crypto between your own wallets is not a taxable event.

Crypto received as employment income is subject to Income Tax and NI on the GBP value when received. Subsequent gain (from receipt to disposal) is subject to CGT.

Declare crypto gains via Self-Assessment tax return, using SA108 Capital Gains supplementary pages. Use cryptoasset record-keeping tools or tax software (Koinly, CoinTracker, etc.) to calculate pool values.