Crypto Tax Calculator UK Trending

Calculate capital gains tax on cryptocurrency disposals including Bitcoin, Ethereum and other digital assets.

Last updated: April 2026 · Source: HMRC — Cryptoassets Manual

£
£
£

Disclaimer

This calculator is provided for informational purposes only and should not be considered as financial or tax advice. All calculations are performed locally in your browser — no personal data is collected or sent to our servers. Rates and thresholds are sourced from HMRC and GOV.UK and are updated for the current tax year. Always verify results with HMRC or consult a qualified professional before making financial decisions.

How It Works

HMRC treats cryptocurrency as a taxable asset. Capital Gains Tax applies when you sell, swap, gift or spend crypto at a profit. For the 2025/26 tax year, the annual exempt amount is £3,000. Gains above this are taxed at 10% for basic-rate taxpayers or 20% for higher and additional-rate taxpayers.

The cost basis is calculated using the share-pooling method, which is the same approach used for shares. Under this method, you maintain a pool of tokens with an average cost. The rules also include the same-day rule (matching disposals with acquisitions on the same day) and the bed-and-breakfast rule (matching with acquisitions within 30 days).

You must report crypto gains exceeding four times the annual exempt amount (£12,000 for 2025/26) via Self Assessment, even if no tax is due after the exemption. Mining, staking rewards and airdrops may be treated as income rather than capital gains depending on the activity.

Example: Selling Bitcoin for £15,000 profit, higher-rate taxpayer

  1. Total gain on disposal: £15,000
  2. Less annual exempt amount: −£3,000
  3. Taxable gain: £12,000
  4. CGT at 20% (higher rate): £12,000 × 20% = £2,400
  5. Reporting required: Yes (gain exceeds £12,000 threshold)

Source: HMRC — Cryptoassets Manual

Frequently Asked Questions

What does the Crypto Tax Calculator UK do?
Calculate capital gains tax on cryptocurrency disposals including Bitcoin, Ethereum and other digital assets. All calculations are performed in your browser using official UK rates and thresholds.
Is this calculator updated for the 2025/26 tax year?
Yes. This calculator uses the latest HMRC rates and thresholds for the 2025/26 UK tax year, which runs from 6 April 2025 to 5 April 2026. Rates are verified against official HMRC publications.
Do I need to tell HMRC about this?
Whether you need to report to HMRC depends on your individual circumstances. If you are unsure, check GOV.UK or contact HMRC directly. This calculator provides estimates for guidance only.