1In section 87A of the Taxes Management Act 1970 (interest on overdue tax for accounting periods ending after appointed day) the following subsection shall be inserted after subsection (4)—
“(4A)In a case where—
(a)there is for an accounting period of a company (“the later period”) a relievable amount within the meaning of section 131 of the Finance Act 1993 (non-trading exchange gains and losses),
(b)as a result of a claim under subsection (5) or (6) of that section the whole or part of the relievable amount for the later period is set off against the exchange profits (as defined in subsection (10) of that section) of an earlier accounting period (“the earlier period”), and
(c)disregarding the effect of subsection (5) or (6) (as the case may be) of that section, an amount of corporation tax for the earlier period would carry interest in accordance with this section,
then, in determining the amount of interest payable under this section on corporation tax unpaid for the earlier period, no account shall be taken of any reduction in the amount of that tax resulting from the claim under subsection (5) or (6) of that section except so far as concerns interest for any time after the date on which any corporation tax for the later period became due and payable, as mentioned in subsection (1) above.”