“ Article 90 1. In the case of cancellation, refusal or total or partial non-payment, or where the price is reduced after the supply takes place, the taxable amount shall be reduced accordingly under conditions which shall be determined by the Member State. 2. In the case of total or partial non-payment, Member States may derogate from paragraph 1.”
“…the supplier of the services states his charges, the recipient disputes them if he wishes, and after discussion the amount is agreed. If an invoice stating the supplier’s original version of the charges has been issued in the meantime, a credit note is issued, giving credit for the difference between the charges originally stated and the agreed charges, and no doubt such a credit note would be perfectly acceptable for the purposes of the value added tax. Again if the amount has been agreed, and the invoice erroneously states a higher amount, a credit note is an appropriate method of evidencing the correction of the error. In each of these cases, the invoice misstates the transaction as it was agreed between the parties and the credit note evidence the correction of the error. But once the parties have agreed the amount of the charges for the services, and the services have been supplied , the value of the supply is ascertained. If thereafter the supplier unilaterally decides, or both parties contract, that the full amount of the agreed charges is not to be payable , in our judgement the decision or the new contract does not alter the value of the supply for the purposes of value added tax , nor does it make any difference if a credit note is issued to evidence the decision or the new contract.”
“The tribunal determines that [the credit note] was a bona fide document intended to correct the genuine mistaken belief that the services were properly supplied whereas the supply was challenged and, without the issue coming before the Court, the claim of the appellant failed.”
“[81] Further, the Settlement was reached, and the High Court action settled, on the plainest possible terms. DEFRA was to pay CC the sum of£200,000 . That sum was to be paid in full and final settlement of the latter’s claim against the former. No further sum was to be paid to cover any VAT liability; no sum was to be paid by way of interest, and each party was to bear its own costs. In our judgment, in those circumstances not only was the litigation settled, the consideration for CCC’s supplies was reduced. The conditions contained in reg 38 were satisfied. CCC is therefore entitled to recover the VAT it overpaid on the sums invoices to DEFRA…. [83] ….In our judgment, reg 38 is the means whereby any claim settled similarly to that of CCC is to be adjusted as a reduction in consideration…”
“the principle of the common system of VAT entails the application to goods and services of a general tax on consumption exactly proportional to the price of the goods and services…..”
“[64] …It is common ground ….that Art 11C(1) has direct effect and that a Member State canot take away the right conferred by that provision by measures which the Member State takes to establish the conditions under which the right is to be enjoyed. Moreover, the derogation which Member States are permitted to make under Art 11C(1) … must be objectively justifiable; the same must be applicable to the conditions which the Member States are required to determine….the conditions imposed by Member States are concerned with procedure and evidence. They are not permitted to go further than necessary; and any conditions imposed must be justified…they may be imposed to check that the reduction is not fictitious. [65] Here the ‘condition’ imposed by rule 38(1A) is concerned neither with the procedures for making the claim nor with the evidence required to support it….It is a blanket limitation which as the effect of ousting the taxable person’s basic right to be taxed on the consideration received by him and no more. As such, the three year limitation on making the claim by reference to the time when the original supply is made is incompatible with Art 11 generally and GMAC’s rights under Art 11C(1) in particular. Rule 38(1A) has rendered ineffective GMAC’s right to relief. On that basis we think that GMAC is entitled to rely on its Community law rights; and to the extent that the Commissioner’s decision seeks to deny GMAC those rights, the decision is wrong. Our conclusion on the three year limitation issue is therefore in favour of GMAC.”