Commentary on Sections Glossary History Section 311: Calculation of amount after sale of relevant interest
1060.This section is based on parts of section 3(2B) and (3) of CAA 1990. It provides the amount of a writing-down allowance after the sale of the relevant interest in a building which is or has been an industrial building. It can also apply after an additional VAT liability or rebate.
1061.The starting point for the calculation is “the residue of qualifying expenditure”. This is defined in section 313 by reference to Chapter 8. The writing-down allowance is then calculated as a fraction of the residue of qualifying expenditure. That fraction is the length of a chargeable period divided by the balance, after the date of the relevant event, of the 25-year period which began when the building was first used. The effect of this is to write off the residue over the remainder of the 25-year period.