3(1)If an individual (“N”) makes a qualifying gift, a portion of N's tax liability for each relevant tax year is to be treated as satisfied, as if N had paid that portion when it became due (or on the offer registration date, if the portion became due before that date).E+W+S+N.I.
(2)A “relevant tax year” is a tax year identified in the agreed terms as a tax year to which this paragraph is to apply.
(3)Up to 5 tax years may be identified in the agreed terms, but each one must be either—
(a)the tax year in which the offer registration date falls, or
(b)one of the 4 tax years following that tax year.