HMRC is now receiving your crypto exchange data.
Under the Crypto-Asset Reporting Framework, UK exchanges now report your account and transaction data to HMRC. Work out what you owe — with a calculator that applies HMRC’s own share-pooling rules and shows its working.
- 3 rules
- Same-day · 30-day · Section 104
- Shows working
- Every match, every cost basis
- 2024/25–2026/27
- Incl. the 30 Oct 2024 rate change
Drag to spin · BTC · ETH · XRP · SOL · and more
Works with the tokens from every major UK exchange.
How it works
Your transactions
Buys, sells and crypto-to-crypto trades — with fees. Type them in, or import a CSV from Coinbase, Kraken or Binance. Nothing ever leaves your browser.
HMRC's own rules
Same-day, then the 30-day bed-&-breakfast rule, then the Section 104 pool — applied in the right order, across every tax year.
Exactly what you owe
Every disposal, every cost basis, every band — the full working, not just a final number. Ready for Self Assessment.
Open the calculatorWork out what you owe — free, in minutes
Add your transactions manually or import a CSV from Coinbase, Kraken or Binance. HMRC’s matching rules, applied per disposal, with the full working shown. Nothing leaves your browser.
Open the calculator →No sign-up · covers 2024/25–2026/27 · estimates only, not advice