4(1)This paragraph applies if an officer of Revenue and Customs discovers that payment or set-off of an amount of gift aid supplement—U.K.
(a)ought not to have been made, or
(b)is or has become excessive.
(2)The relevant amount of gift aid supplement may be recovered as if it were an amount of income tax wrongly repaid to the charity (and, in particular, section 30 of TMA 1970 and paragraph 52 of Schedule 18 to FA 1998 apply accordingly).
(3)An amount to be recovered in accordance with sub-paragraph (2) is liable to interest as if it were an amount of income tax wrongly repaid to the charity.
(4)In this paragraph “relevant amount of gift aid supplement” means the payment or set-off of the amount of gift aid supplement, to the extent that it—
(a)ought not to have been made, or
(b)is or has become excessive.
(5)For the purposes of this paragraph income tax is “wrongly repaid” to a charity if it is an amount repaid to the charity which ought not to have been repaid.
(6)For the purposes of this paragraph it does not matter if a charity is within the charge to income tax or the charge to corporation tax.