Section 56 of CAA 2001 (amount of allowances and charges) is amended as follows.
In subsection (1), for "25%" substitute ." 20% "
After that subsection insert—
In subsection (2), for "Subsection (1) is" substitute ." Subsections (1) and (1A) are "
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The amendments made by this section have effect in relation to chargeable periods—
But in respect of a chargeable period within subsection (8)(b), they apply as if in—
the references to 20% were to x%.
For the purposes of subsection (9)—
In subsection (10)—
BRD is the number of days in the chargeable period before the relevant date,
ARD is the number of days in the chargeable period on and after the relevant date, and
CP is the number of days in the chargeable period.
The relevant date is—