CryptoTax UK · Guide
Free UK Crypto Tax Calculator
Work out roughly how much Capital Gains Tax you may owe on your crypto disposals — built around the HMRC rules UK individual taxpayers typically follow. Estimates only; always confirm with HMRC or a qualified accountant before filing.
Open the calculator →How the calculator works
Enter your crypto disposals (sales, swaps, spending) and acquisitions for a tax year. The calculator applies HMRC's share-pooling, the same-day rule and the 30-day bed-and-breakfast rule to estimate your net gain. It then subtracts the Annual Exempt Amount and applies the appropriate CGT rate band based on your other income.
What it covers
UK Capital Gains Tax on disposals of crypto assets for the 2024/25 and 2025/26 tax years. Supports Bitcoin, Ethereum, stablecoins and any other crypto held by an individual UK taxpayer. CSV import for Coinbase, Binance, Kraken and generic exchange exports is included with the Premium plan.
What it does not cover
This is not tax advice. It does not handle complex situations such as DeFi liquidity provision, NFTs, mining as a trade, or non-UK domicile rules. If your situation involves any of these, consider speaking to a qualified UK tax adviser before relying on any estimate.
Frequently asked questions
Is the calculator free?
The core calculator is free with no sign-up. CSV import, multi-year dashboards and the PDF accountant pack are Premium features. Monthly Premium is £2, yearly is £19.99, and lifetime is £39.99.
Does it follow HMRC rules?
Yes — it applies share pooling, the same-day rule and the 30-day rule as set out in HMRC's Cryptoassets Manual. As HMRC guidance evolves we update the engine accordingly.
Can I trust the numbers?
The calculator is an estimate. Edge cases (DeFi, NFTs, airdrops with conditions, mining) may need manual review. Always have a qualified accountant check anything you submit to HMRC.
Educational guidance only. CryptoTax UK is not a regulated tax adviser and the information above does not constitute tax, legal or financial advice. Always confirm your specific position with HMRC or a qualified accountant before filing.