Crypto Tax Calculator
This crypto tax calculator is designed for UK residents who need to calculate capital gains tax on cryptocurrency transactions. Whether you're trading Bitcoin, Ethereum, or any other digital asset, our HMRC-compliant calculator helps you determine your exact tax liability in seconds.
Our uk crypto tax calculator accounts for the 2024/2025 tax year rules, including the £3,000 capital gains allowance and varying tax rates based on your income band. With new broker reporting requirements coming in 2026, accurate record-keeping is more important than ever. Simply enter your purchase price, sale price, and income details to get an instant, accurate estimate of how much tax you owe on your crypto gains. No registration required, 100% free to use.
Use the Crypto Tax Calculator Below
Calculate your UK crypto tax liability instantly with our HMRC-compliant calculator.
Your Tax Summary
Sale price minus purchase price
Tax-free capital gains allowance
Amount subject to capital gains tax
Basic rate taxpayer – CGT rate 10% on chargeable gains.
Amount you'll pay to HMRC
Your take-home gain
Important: New 2026 Crypto Tax Reporting Rules
Critical changes coming for UK crypto investors using international exchanges
Starting 2026: Enhanced Broker Reporting (US Exchanges)
Major crypto exchanges will begin reporting detailed transaction data to tax authorities:
- •Exchanges like Coinbase, Kraken will report gross proceeds from sales on Form 1099-DA
- •Brokers will also report cost basis (original purchase price + fees)
- •While this is a US requirement, UK residents using these exchanges will have their data shared with HMRC through existing tax treaties
⚠️ What This Means for You
- Cost basis for assets acquired before Jan 1, 2026 won't be reported by brokers - you must track this yourself
- If you don't specify an accounting method (HIFO, Spec ID), the IRS will use First-In-First-Out, which may not be tax-optimal
- Brokers may have up to 1 year to send tax forms - don't wait for them before filing
Proactive Steps to Take Now
- ✓Document all crypto purchases before 2026 with timestamps, prices, and fees
- ✓Use crypto tax software to track cost basis automatically (Koinly, CoinTracker, etc.)
- ✓Download transaction history from ALL exchanges you've used
How the Calculator Works
Inputs Required
To calculate your tax, you'll need to provide:
- The original amount you paid for the cryptocurrency in GBP (your cost basis)
- The amount you received or the current market value when you disposed of the crypto
- Select the relevant tax year (2024/25, 2023/24, or 2022/23) as allowances vary
Outputs Provided
The calculator provides you with:
- Your profit or loss from the transaction
- The tax-free CGT allowance for your selected tax year
- The portion of your gain that's subject to tax (after deducting allowance)
Calculation Method
Our calculator follows HMRC's official crypto tax framework:
- Sale Price - Purchase Price = Capital Gain
- Deduct the annual CGT allowance from your total gains
- 10% for basic rate taxpayers, 20% for higher/additional rate
- Taxable Gain × Your CGT Rate = Total Tax
- Capital Gain - Total Tax = Net Profit
HMRC Rules Applied
This tool incorporates:
- Current CGT allowances: £3,000 (2024/25), £6,000 (2023/24), £12,300 (2022/23)
- Correct CGT rates based on income: 10% basic rate, 20% higher/additional rate
- HMRC's disposal event rules (selling, swapping, spending crypto all count)
New international data-sharing agreements mean crypto exchanges will report transactions directly to tax authorities. While UK tax treatment remains unchanged, accurate record-keeping is now more important than ever. Keep detailed documentation of all purchases, especially those made before 2026.
Example Calculations
Example 1: Basic Rate Taxpayer Sells Bitcoin for Profit
Sarah bought 0.5 BTC for £10,000 in 2022. She sold it in 2024 for £18,000.
- Capital Gain: £18,000 - £10,000 = £8,000
- Annual Allowance (2024/25): £3,000
- Taxable Gain: £8,000 - £3,000 = £5,000
Result: Sarah pays £500 in crypto tax and keeps £7,500 profit.
Example 2: Higher Rate Taxpayer Sells Ethereum at a Loss
James bought 10 ETH for £25,000 but sold them for £18,000 during a market downturn.
- Capital Gain: £18,000 - £25,000 = -£7,000 (loss)
- Tax Owed: £0 (no tax on losses)
- Loss to Carry Forward: £7,000
Result: James can offset this £7,000 loss against future crypto gains, potentially saving up to £1,400 in future tax.
Example 3: Multiple Transactions with Staking Income
Emma has £15,000 in crypto gains from trading + £2,000 worth of staking rewards (taxed as income).
- Trading Gains: £15,000
- Annual Allowance: £3,000
- Taxable Gain: £12,000
The £2,000 staking rewards are taxed as income at Emma's marginal rate (40%) = £800.
Result: Emma pays £2,400 in CGT + £800 income tax = £3,200 total crypto tax.
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Frequently Asked Questions
Do I pay tax on crypto in the UK?
How much crypto is tax-free?
What is capital gains tax on crypto?
When do I report crypto tax to HMRC?
How does HMRC track crypto?
How will the 2026 crypto reporting requirements affect UK investors?
Can I offset crypto losses?
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This crypto tax calculator provides estimates for educational and informational purposes only. It should not be considered as financial, tax, or legal advice. Tax situations vary significantly based on individual circumstances, transaction history, and applicable regulations. For personalized guidance on your crypto tax obligations, please consult with a qualified tax professional or accountant who specializes in cryptocurrency taxation. HMRC rules are subject to change. Always verify current tax rates and allowances with official HMRC sources.