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Capital Gains Tax calculator

Easily estimate how much you may owe on your shares, second properties, and other taxable assets using our CGT calculator. 

Enter your 2025/26 tax details

Annual gain/loss generated

If you have unused registered losses from previous years, you may deduct these from the values you enter for this year's calculation below.

From selling property

From selling stocks, shares or other general investments

From selling other assets

Your results

Please enter your details to calculate your estimated Capital Gains Tax for the current tax year.


Speak to our experts about Capital Gains Tax for the products we offer

Do you have questions about CGT? 

Our experienced team can help you understand how it might affect you and what your options are.

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What is Capital Gains Tax?

Capital Gains Tax is tax paid when you make a capital gain. So, when you sell or transfer certain assets – such as antiques, vintage cars or shares – that have increased in value during the time you’ve owned them, you might have to pay tax on the profit you make. 

The amount of CGT you pay may depend on the type of asset sold, the profit made and your annual income and any losses you may have made in previous years.

Read more about what Capital Gains Tax is and when it needs to be paid.

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Other useful investment and tax calculators

Need help estimating your investment and tax calculations? We have a range of calculators available to help you gain clarity over your finances and plan for future investments. These calculations are for illustrative purposes only, but you can book a free call with our expert team anytime to discuss your goals and gain more detailed financial guidance.

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As with all investing, your capital is at risk. These calculations are based on a number of assumptions, (including that pension contributions are zero in the tax year) are for illustrative purposes only and do not constitute tax advice or recommendations.

Tax rules vary by individual status and may change. Nutmeg does not provide tax advice. If you’re unsure of your tax situation, please seek tax advice.