Where a taxable person subsequently invoices VAT in invoices for supplies, which previously he had treated as being VAT exempt, this does not result in the recipient’s input VAT deduction, by means of a VAT refund, being disallowed. Any possible limitation periods are irrelevant in cases where the recipient was unable to claim the refund within time, due to the fact that he did not have an invoice and was unaware of the VAT liability (ECJ, decision of 21.03.2018 - C- 533/16 Volkswagen AG). Here, substantive law prevails over procedural law.
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