# Capital Allowances Act 2001, Section 509: Calculation of allowance after sale of relevant interest


(1) This section applies if—
(a) the relevant interest in a qualifying dwelling-house is sold, and
(b) a balancing adjustment falls to be made under section 513 as a result of the sale.
(2) If this section applies, the writing-down allowance for any chargeable period ending after the sale is—
RQExABwhere—
RQE is the amount of the residue of qualifying expenditure attributable to the dwelling-house immediately after the sale,
A is the length of the chargeable period, and
B is the length of the period from the date of the sale to the end of the period of 25 years beginning with the day on which the dwelling-house was first used.
(3) On any later such sale, the writing-down allowance is further adjusted in accordance with this section.

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Source: https://www.legislation.gov.uk/ukpga/2001/2/section/509 (the official version)
Page: https://openlegislation.uk/capital-allowances-act-2001/section-509
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.