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Capital Allowances Calculator

Bought or own UK commercial property? Estimate how much you can claim in capital allowances on embedded fixtures and integral features — and the tax it saves you.

Leave 0 if unsure
Gross internal area
Roughly the cleared-site value
You could claim
£95,591
in capital allowances
Estimated tax saving£23,898
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This is an indicative estimate from your inputs. A specialist can confirm the real number — they typically find more once they review the detail.

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Indicative estimate using PTO standard rates + CAA 2001 s562. A specialist finalises the claim.

How much can you claim?

On most commercial property purchases, embedded fixtures and integral features — heating, electrical and water systems, lighting, sanitaryware, fire alarms and more — make up 20–40% of the purchase price. That’s often £25,000 to £175,000+ in claimable capital allowances that owners and their accountants routinely miss.

This calculator gives an indicative figure using Property Tax Optimisers’ standard rates and the CAA 2001 s562 apportionment. For a defensible, HMRC-compliant claim, CapExScan turns a quick property scan into a detailed report — assessed by a capital allowances specialist trained by a quantity surveyor and reviewed by a qualified accountant, PI-insured.

Considering a purchase rather than something you already own? Paste the agent’s listing for an estimate before you offer.

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Capital allowances by property type

Commercial propertyCare homesDental practicesHotelsOffices & fit-outsRetail units