Drop in your broker statements. Capital gains, dividends, interest, funds, futures, and options, to HMRC rules. Nothing ever leaves your device.
Stop spending hours on spreadsheets. Import your transactions from broker statements and let ShareCalc handle the complex calculations.
Supports UK share identification rules from 1998, income classification, non-residency, equalisation, accumulation funds, gilts, excess reportable income, options, and more.
Get detailed breakdowns of your tax obligations with easy-to-understand reports and real-time tax estimates, including an audit-ready PDF generated on your own device. Sample Report
Built-in currency conversion, balance verification, and data integrity checks to ensure your calculations are thorough and efficient.
Drop in statements from Interactive Brokers, Hargreaves Lansdown, Halifax, IG, Trading 212, Charles Schwab, Robinhood, tastytrade, or our own CSV format. They're read on your device — nothing is uploaded.
Share identification, currency conversion, income classification and residency are handled for you. Anything missing or inconsistent is flagged so you can put it right.
Review every tax year and every taxable event, with the figures you need for your self assessment, then download an audit-ready PDF report.
Most tax tools ask you to upload your entire financial history. ShareCalc doesn't.
Every calculation happens on your own machine, not on our servers. Your broker statements are read there too, and are never uploaded.
Keep it in a file you control, or let it live quietly in your browser. Either way it stays on your device, and you can export it whenever you like.
We never receive your holdings or transactions, so we can't lose them, leak them, or be made to hand them over. Your account is for signing in, not for storing your data.
UK Capital Gains and Investment Tax Calculator
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