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HMRC internal manual

Capital Allowances Manual

From
HM Revenue & Customs
Updated
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General: Definitions: Parts of assets

CAA01/S571

Treat part of an asset as an asset unless the legislation refers to the whole of an asset.

This is an example of the exception. The legislation about treating a building used partly as an industrial building and partly for other purposes as an industrial building if the part used for non-qualifying purposes is less than 25% of the whole (CA32700) refers to the whole of the building. The exception means that you cannot apply the 25% disregarded to a part of a building.