Built in London
We make UK Capital Gains Tax less painful.
Drop your broker CSV
Never stored
UK matching rules
For Self Assessment
What We Do
CGT Calculator helps UK investors and traders calculate their Capital Gains Tax. Upload your broker statements and we apply HMRC rules — Section 104 pooling, the 30-day matching rule, same-day matching — to produce a complete tax report for your Self Assessment.
We support Trading 212, Freetrade, Hargreaves Lansdown, Charles Schwab, Morgan Stanley, Interactive Brokers, Revolut, Robinhood, Fidelity, Vanguard, Interactive Investor, Binance, Coinbase, and more. Stocks, ETFs, options, and crypto — all in one place.
Our Approach
HMRC compliance. We follow current HMRC guidance for share matching rules, foreign exchange conversion, and capital gains reporting. When the rules change, the calculator updates.
Company
ZERO TWO ONE SOFTWARE LIMITED
17127628
England and Wales
Suite Ra01, 195-197 Wood Street, London, E17 3NU, United Kingdom
Contact
For questions, support, or feedback — email us directly.
support@cgtcalculator.io
Brokers, platforms and accountancy practices — partnership enquiries go here.
partnerships@cgtcalculator.io