16(1)The amendments made by paragraphs 2 and 3 have effect in relation to accounting periods beginning on or after 1 April 2017.U.K.
(2)Where a company has an accounting period beginning before 1 April 2017 and ending on or after that date (“the straddling period”)—
(a)so much of the straddling period as falls before 1 April 2017, and so much of that period as falls on or after that date, are treated as separate accounting periods, and
(b)where it is necessary to apportion an amount for the straddling period to the two separate accounting periods, it is to be apportioned—
(i)in accordance with section 1172 of CTA 2010 (time basis), or
(ii)if that method would produce a result that is unjust or unreasonable, on a just and reasonable basis.