(1)Either or both of subsections (1) and (2) of section 551 may be applied to a single transaction between a charitable trust and a substantial donor.
(2)But if they are both applied, the amount of non-charitable expenditure that the charitable trust would, apart from this subsection, be treated as incurring under section 551(2) in respect of the transaction, is reduced by the section 551(1) amount (but is not to be reduced below nil).
(3)The “section 551(1) amount” means the amount of any payment made by the charitable trust, in the course of, or for the purposes of, the transaction, that is treated as non-charitable expenditure under section 551(1).