What costs can I deduct from Capital Gains Tax on a UK property?

Several costs can be deducted from your gain, reducing the amount of CGT you pay. They fall into three categories.

Selling costs: estate agent fees, solicitor fees, and any costs directly related to the sale.

Buying costs: the original purchase price, solicitor and surveyor fees, and Stamp Duty Land Tax paid at purchase.

Improvement costs: the cost of capital improvements made to the property during your ownership — things like extensions, loft conversions, new kitchens or bathrooms that added value.

What you can't deduct: general maintenance and repairs (fixing a boiler, repainting, replacing like-for-like fittings), mortgage interest, or insurance costs.

The formula is: sale proceeds, minus allowable selling costs, minus original purchase price and buying costs, minus capital improvements.

Each of these deductions is applied as part of our CGT filing service — you don't need to calculate anything yourself. Just share the relevant receipts and documents and we'll handle the rest.