UK Crypto Tax Calculator on Crypto and Share Gains
Capital Gains Tax Summary
- Net Gain After Tax
- £7,100.00
- Gross Capital Gain
- £8,000.00
- Capital Gains Tax Payable
- £900.00
- Return on Investment (ROI)
- 80.00%
- Effective Capital Gains Tax Rate
- 11.25%
HMRC Calculation Breakdown
| Calculation Step | Amount |
|---|---|
| Annual Exempt Amount (£3,000 tax-free allowance) | £3,000.00 |
| Capital Gains Tax (18% statutory rate) | £900.00 |
Educational estimate only. Non-binding; verify with official sources.
UK Capital Gains Tax on Shares and Crypto in 2026
In the United Kingdom, disposing of cryptocurrency or shares triggers Capital Gains Tax (CGT) whenever total net realized gains exceed the statutory Annual Exempt Amount. HM Revenue and Customs (HMRC) treats cryptoassets as capital property subject to standard disposal and pooling principles.
Our 2026 UK Crypto Tax Calculator incorporates the statutory CGT rates of 18% for basic-rate individuals and 24% for higher-rate taxpayers, combined with the £3,000 annual exemption.
How to Calculate UK Crypto Capital Gains Tax
Net chargeable capital gains are calculated by subtracting allowable acquisition costs, exchange trading fees, and network gas fees from gross disposal proceeds in GBP.
Each UK resident receives a tax-free Annual Exempt Amount of £3,000 per tax year. Net gains above £3,000 are taxed according to your income tax band: 18% for basic rate taxpayers and 24% for higher or additional rate earners.
Tax Pooling Rules for Equities and Crypto
HMRC applies strict share identification matching rules (Same-Day Rule, Bed and Breakfasting 30-day rule, and Section 104 Holding Pool) to prevent artificial tax loss harvesting.
For cryptocurrency disposals, exchanging one token for another (for instance swapping Bitcoin for Ethereum or a stablecoin) constitutes a taxable disposal under UK tax law.
Utilizing the Annual Exempt Amount
The Annual Exempt Amount of £3,000 cannot be carried forward into future tax years. Failing to utilize your annual allowance within the tax year means that relief is permanently lost.
Investors frequently make use of Stocks and Shares ISAs or pension wrappers (SIPPs) to achieve complete exemption from Capital Gains Tax on future gains.
Practical UK Capital Gains Tax Scenarios
Estimated CGT liabilities for investments bought at £10,000 and disposed in 2026:
| Sale Proceeds | Gross Gain | Annual Allowance | Chargeable Gain | Tax (Basic Rate 18%) | Tax (Higher Rate 24%) |
|---|---|---|---|---|---|
| £12,000 | £2,000 | £2,000 (fully covered) | £0 | £0 | £0 |
| £16,000 | £6,000 | £3,000 | £3,000 | £540 | £720 |
| £25,000 | £15,000 | £3,000 | £12,000 | £2,160 | £2,880 |
| £50,000 | £40,000 | £3,000 | £37,000 | £6,660 | £8,880 |
Assumes no prior capital gains utilized against the £3,000 allowance in the same tax year.
Frequently Asked Questions About UK Capital Gains Tax
- How do I calculate crypto gains and losses for UK taxes?
- To calculate crypto capital gains in the UK, subtract your allowable acquisition cost (calculated using HMRC's Same-Day, 30-Day Bed and Breakfast, and Section 104 Pool rules) and transaction fees from your disposal proceeds in GBP. If your net gains across all disposals exceed the £3,000 Annual Exempt Amount, the excess is taxed at 18% or 24%.
- What are the Capital Gains Tax rates in 2026?
- Capital Gains Tax on shares and crypto assets is charged at 18% for basic rate taxpayers and 24% for higher and additional rate taxpayers.
- Is crypto to crypto trading taxable in the UK?
- Yes. Swapping one cryptocurrency for another is treated by HMRC as a disposal of the original token and is subject to Capital Gains Tax on any profit accrued.
- Can capital losses be carried forward?
- Yes. Allowable capital losses must be reported to HMRC within four years of the tax year in which they occurred and can be carried forward indefinitely to offset future gains.
Official Statutory Sources
Calculations conform to published guidance from UK fiscal authorities:
- Taxation of Chargeable Gains Act 1992 (TCGA 1992)
- HMRC Cryptoassets Manual (CRYPTO10000)
- Autumn Budget 2024 Revisions to Headline Capital Gains Tax Rates
- GOV.UK Capital Gains Tax Guidance and Annual Exempt Amounts
Applicable for tax year 2026.