Capital Allowances Act 1990

145 Other corporation tax allowances

(1) Where an allowance falls to be made to a company for any accounting period which is to be given by discharge or repayment of tax, and is to be available primarily against a specified class of income, it shall, so far as may be, be given effect by deducting the amount of the allowance from any income of the period, being income of the specified class.

(2) Where such an allowance which is to be made for any accounting period cannot be given full effect under subsection (1) above in that period by reason of a want or deficiency of income of the relevant class, then (so long as the company remains within the charge to tax) the amount unallowed shall be carried forward to the succeeding accounting period, except in so far as effect is given to it under subsection (3) below; and the amount so carried forward shall be treated for the purposes of subsection (1) above, and of any further application of this subsection, as the amount of a corresponding allowance for that period.

(3) Where such an allowance which is to be made for any accounting period (otherwise than by being carried forward from an earlier accounting period) cannot be given full effect under subsection (1) above in that period by reason of a want or deficiency of income of the relevant class, the company may, on making a claim to which section 42 of the [1970 c. 9.] Taxes Management Act 1970 applies, require that effect shall be given to the allowance against the profits (of whatever description) of that accounting period and, if the company was then within the charge to tax, of preceding accounting periods ending within the time specified in subsection (4) below; and, subject to that subsection and to any relief for earlier allowances or for losses, the profits of any of those accounting periods shall then be treated as reduced by the amount unallowed under subsection (1) above, or by so much of that amount as cannot be given effect under this subsection against profits of a later accounting period.

(4) The time referred to in subsection (3) above is a time equal in length to the accounting period for which the allowance falls to be made; but the amount or aggregate amount of the reduction which may be made under that subsection in the profits of an accounting period falling partly before that time shall not, with the amount of any reduction falling to be made therein under any corresponding provision of the Corporation Tax Acts relating to losses, exceed a part of those profits proportionate to the part of the period falling within that time.

(5) A claim under subsection (3) above shall be made within two years from the end of the accounting period first mentioned in that subsection.

(6) All such assessments and adjustments of assessments shall be made as are necessary to give effect to a notice given by a company under section 68(3A) of the 1968 Act.