58Reduction in rate of supplementary chargeU.K.
(1)In section 330 of CTA 2010 (supplementary charge in respect of ring fence trades), in subsection (1), for “20%” substitute “ 10% ”.
(2)The amendment made by subsection (1) has effect in relation to accounting periods beginning on or after 1 January 2016 (but see also subsection (3)).
(3)Subsections (4) and (5) apply where a company has an accounting period beginning before 1 January 2016 and ending on or after that date (“the straddling period”).
(4)For the purpose of calculating the amount of the supplementary charge on the company for the straddling period—
(a)so much of that period as falls before 1 January 2016, and so much of that period as falls on or after that date, are treated as separate accounting periods, and
(b)the company's adjusted ring fence profits for the straddling period are apportioned to the two separate accounting periods in proportion to the number of days in those periods.
(5)The amount of the supplementary charge on the company for the straddling period is the sum of the amounts of supplementary charge that would, in accordance with subsection (4), be chargeable on the company for those separate accounting periods.
(6)In this section—
“adjusted ring fence profits” has the same meaning as in section 330 of CTA 2010;
“supplementary charge” means any sum chargeable under section 330(1) of CTA 2010 as if it were an amount of corporation tax.