Capital Gains Tax Calculator – 2026

Calculate UK Capital Gains Tax (CGT) for 2025/26 on property or shares. Includes the £3,000 annual exempt amount and the correct rates for basic and higher rate taxpayers. updated for 2026.

Enter your figures

Fill in the inputs below and use the result as a quick planning guide before making a decision.

Capital Gain (£)

Other Annual Income (£)

Asset Type (0 = Property, 1 = Shares)

Years Asset Held

Frequently asked

Capital Gains Tax is a tax on the profit you make when you sell or dispose of an asset that has increased in value. You pay CGT on the gain, not the total sale proceeds. It applies to assets such as residential property (that is not your main home), shares, business assets, and valuable personal possessions worth over £6,000. Your main residence is usually exempt under Private Residence Relief.

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General 2025