Where a tax credit is claimed for a tax year by making a claim before the tax year begins, any award of the tax credit on the claim is for the whole of the tax year.

An award on any other claim for a tax credit is for the period beginning with the date on which the claim is made and ending at the end of the tax year in which that date falls.

Subsections (1) and (2) are subject to any decision by the Board under section 16 to terminate an award.