Section 27

any sums payable to a post-pioneer company in the tax relief period which might reasonably and properly have been expected to be payable, in the normal course of business, after the end of that period shall be treated as not having been payable in that period but as having been payable on such date, after that period, as the

Collector thinks fit; and

any expense incurred by a post-pioneer company within one year after the end of its tax relief period which might reasonably and properly have been expected to be incurred, in the normal course of business, during its tax relief period shall be treated as not having been incurred within that year but as having been incurred for the purposes of its qualifying activities and on such date, during its tax relief period, as the

Collector thinks fit.

Ascertainment of income in respect of qualifying activities.