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Calculate your capital gains. Across all your portfolio.

From shares and ETFs to crypto, Finbooks brings your transactions together, calculates your gains and losses under UK tax rules, and helps you understand your Capital Gains Tax position.

7-day free trial. No card required.

UK capital gains calculator chart with broker icons and a total capital gains value of £638.45.

What you sell isn't what you gain. And what you gain isn't what you owe.

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Bring every gain and loss into one CGT calculation

UK capital gains calculator chart with a green background, broker icons and a total capital gains value of £638.45.

From your transactions to your CGT calculation in three steps

  1. 1

    Connect your investment accounts

    Import your transaction history from supported brokers, exchanges and wallets.

  2. 2

    Let Finbooks calculate your gains

    Finbooks reconstructs acquisition costs, applies the relevant UK tax rules and calculates your capital gains and allowable losses.

  3. 3

    Get your tax-ready figures

    Access your calculated gains and losses, review the supporting calculations and generate the reports you need for Self Assessment.

Calculate your CGT with Finbooks

You invest. We handle the tax.

Get pre-filled tax reports and supporting calculations for your Self Assessment or tax adviser.

Stack of Finbooks fiscal report pages showing excluded transactions and capital gain detail.

Got questions? We have answers

You need the full acquisition and disposal history for the investments you sold, including purchase costs, transaction fees and any relevant transfers.

Finbooks can bring together supported transaction histories across shares, ETFs, bonds and crypto so the calculation reflects your portfolio as a whole.

Yes. You can review the imported transaction history and supporting calculations before generating the report for your Self Assessment or tax adviser.