s 550 Apportionment of additional VAT liabilities and rebates
(1) This section applies if— (a) any provision of this Act requires an allowance or charge to which a person is entitled or liable in respect of any qualifying expenditure to be determined by reference to— (i) a proportion only of that expenditure, or (ii) a proportion only of what that allowance or charge would have been apart from that provision, and (b) the person incurs an additional VAT liability or an additional VAT rebate is made to the person in respect of that expenditure. (2) The additional VAT liability or rebate is subject to the same apportionment as the original expenditure, allowance or charge.