“Where a person— (a) has accounted to the Commissioners for VAT for a prescribed accounting period (whenever ended), and (b) in doing so, has brought into account as output tax an amount that was not output tax due, the Commissioners shall be liable to credit the person with that amount.” the Commissioners shall be liable to credit the person with that amount.”
“It shall be a defence, in relation to a claim under this section by virtue of sub-section (1) or (1A) above that the crediting of an amount would unjustly enrich the claimant.”
“18. … by way of exception to the principle of reimbursement of taxes incompatible with European Union law, repayment of a tax wrongly paid can be refused where it would entail unjust enrichment of the persons concerned. The protection of the rights so guaranteed by the legal order of the European Union does not require repayment of taxes, charges and duties levied in breach of European Union law where it is established that the person required to pay such charges has actually passed them on to other persons… 19. In such circumstances, the burden of the charge levied but not due has been borne not by the trader, but by the purchaser to whom the cost has been passed on. Therefore, to repay the trader the amount of the charge already received from the purchaser would be tantamount to paying him twice over, which may be described as unjust enrichment, whilst in no way remedying the consequences for the purchaser of the illegality of the charge…”
“… in principle, a system such as the one at issue in the main proceedings in which, first, the supplier who has paid the VAT to the tax authorities in error may seek to be reimbursed and, second, the recipient of the services may bring a civil law action against that supplier for recovery of the sums paid but not due observes the principles of neutrality and effectiveness. Such a system enables the recipient who bore the tax invoiced in error to obtain reimbursement of the sums unduly paid.”
“41. … If reimbursement of the VAT becomes impossible or excessively difficult, in particular in the case of the insolvency of the supplier, those principles may require that the recipient of the services to be able to address his application for reimbursement to the tax authorities directly. Thus, the member states must provide for the instruments and the detailed procedural rules necessary to enable the recipient of the services to recover the unduly invoiced tax in order to respect the principle of effectiveness. 42. The answer to the second part of the second question must therefore be that the principles of neutrality, effectiveness and non-discrimination do not preclude national legislation, such as that at issue in the main proceedings, according to which only the supplier may seek reimbursement of the sums unduly paid as VAT to the tax authorities and the recipient of the services may bring a civil law action against that supplier for recovery of the sums paid but not due. However, where reimbursement of the VAT would become impossible or excessively difficult, the member states must provide for the instruments necessary to enable that recipient to recover the unduly invoiced tax in order to respect the principle of effectiveness.”
“The decision in Reemtsma is sufficient in itself to dispose of one of HMRC’s original arguments (pressed more before the judge than before us) that not being the taxable party the investment trusts have no San Giorgio rights sufficient to give them a direct claim against HMRC for the recovery of the over-paid tax. The decision recognises that the end consumer, although not the taxpayer, has a sufficient economic connection with the payment of the tax to qualify for reimbursement under the San Giorgio principle.”
“… In my opinion the test of enrichment will be satisfied where the amount claimed as overpaid VAT is repaid to the claimant, irrespective of the capacity in which he received that sum or of the obligations, if any, to which he has subjected himself in the event of its receipt. In my opinion the critical issue where a claim is made under s.24 of the 1989 Act is whether the enrichment which will arise in these circumstances can be described as unjust. I consider however that this is a question of fact and degree which ought to be left to the decision of the tribunal, subject to review only where it can be shown that that decision was erroneous in point of law or on the facts was wholly unreasonable. In the present case the tribunal were of the opinion that there would be no unjust enrichment because there would not, due to the company’s insolvency, be any benefit as a result of the repayment for the company and its shareholders. … It is clear on the agreed facts that the tenants will get something as a result of the repayment, which is better than nothing. It is also clear that there will be no benefit to the company or its shareholders, as the remainder must be shared equally with the other unsecured creditors. Those other unsecured creditors will receive a benefit which might be regarded, in their case, as a windfall. But that is inevitable if the tenants, who are entitled to claim repayment from the company, are to get anything at all.”