Chapter 7 of Part 7 of CTA 2009 (chargeable gains arising in relation to derivative contracts) is amended as follows.
In section 643 (contracts relating to land or certain tangible movable property)—
In section 650 (property based total return swaps)—
In section 659 (meaning of "relevant credits" and "relevant debits"), after subsection (4) insert—
The amendments made by this section have effect in relation to accounting periods beginning on or after 5 December 2012.
But, for the purposes of subsection (5), an accounting period beginning before, and ending on or after, 5 December 2012 is to be treated as if so much of the period as falls before that date, and so much of the period as falls on or after that date, were separate accounting periods.