138Arm’s length test: non-sterling trades
(1)Subsection (2) below applies where—
(a)an exchange gain of a trade, or of part of a trade, accruing to a company for an accrual period falls to be reduced by virtue of section 136(3), (6) or (10) or 137(3) above, and
(b)the amount falling to be set off is expressed in a currency (the first currency) different from the currency in which the gain is expressed (the second currency).
(2)For the purposes of section 136(3), (6) or (10) or 137(3) the amount falling to be set off shall be treated as the equivalent, expressed in the second currency, of the amount expressed in the first currency.
(3)The translation required by subsection (2) above shall be made by reference to the London closing exchange rate for the two currencies concerned for the first day of the accounting period which constitutes the relevant accrual period or in which that accrual period falls; and the relevant accrual period is the accrual period mentioned in subsection (1)(a) above.
(4)Subsection (2) above shall have effect subject to the application for succeeding accrual periods of this section as regards an amount falling to be set off.
(5)References in subsections (1) and (2) above to the amount falling to be set off include references to so much of that amount as remains after any application of section 136(3), (6) or (10) or 137(3) for earlier accrual periods.