16Any power to make regulations conferred on the Treasury by virtue of this Schedule comes into force on the day on which this Act is passed.
17(1)The amendments made by the following provisions of this Schedule have effect in relation to accounting periods beginning on or after 1 April 2016—
(a)Part 1, and
(b)in Part 2, paragraphs 2 to 12.
(2)Sub-paragraph (3) applies where a company has an accounting period beginning before 1 April 2016 and ending on or after that date (“the straddling period”).
(3)For the purposes of Part 15D of CTA 2009—
(a)so much of the straddling period as falls before 1 April 2016, and so much of that period as falls on or after that date, are separate accounting periods, and
(b)any amounts brought into account for the purposes of calculating for corporation tax purposes the profits of a trade for the straddling period are apportioned to the two separate accounting periods on such basis as is just and reasonable.
18(1)The amendments made by paragraphs 13 to 15 of this Schedule have effect in relation to accounting periods beginning on or after the first day of the financial year appointed by the Treasury by regulations under section 5(3) of the Corporation Tax (Northern Ireland) Act 2015 (“the commencement day”).
(2)Sub-paragraph (3) applies where a company has an accounting period beginning before the commencement day and ending on or after that day (“the straddling period”).
(3)For the purposes of Chapter 14A of Part 8B of CTA 2010—
(a)so much of the straddling period as falls before the commencement day, and so much of that period as falls on or after that day, are separate accounting periods, and
(b)any amounts brought into account for the purposes of calculating for corporation tax purposes the profits of a trade for the straddling period are apportioned to the two separate accounting periods on such basis as is just and reasonable.