(1)Where—
(a)by virtue of a resolution having effect under the M1Provisional Collection of Taxes Act 1968 VAT has been paid at a rate specified in the resolution on the supply of any goods or services by reference to a value determined under section 19(2) or on the acquisition of goods from another member State by reference to a value determined under section 20(3), and
(b)by virtue of section 1(6) or (7) or 5(3) of that Act any of that VAT is repayable in consequence of the restoration in relation to that supply or acquisition of a lower rate,
the amount repayable shall be the difference between the VAT paid by reference to that value at the rate specified in the resolution and the VAT that would have been payable by reference to that value at the lower rate.
(2)Where—
(a)by virtue of such a resolution VAT is chargeable at a rate specified in the resolution on the supply of any goods or services by reference to a value determined under section 19(2) or on the acquisition of goods from another member State by reference to a value determined under section 20(3), but
(b)before the VAT is paid it ceases to be chargeable at that rate in consequence of the restoration in relation to that supply or acquisition of a lower rate,
the VAT chargeable at the lower rate shall be charged by reference to the same value as that by reference to which VAT would have been chargeable at the rate specified in the resolution.
(3)The VAT that may be credited as input tax under section 25 or refunded under section 33, 35 or 40 does not include VAT that has been repaid by virtue of any of the provisions mentioned in subsection (1)(b) above or that would be repayable by virtue of any of those provisions if it had been paid.