The invalidity of a legal transaction under national civil law cannot as such lead to the exclusion of the deduction of input VAT. According to a decision of the ECJ, however, this only applies if the national court has examined and ensured that the transaction is not a fictitious transaction or that, if this transaction was physically carried out, it is neither in connection with VAT evasion nor considered as an abuse of rights.
On 26 February 2019, the ECJ issued its judgements in the joined cases T Denmark and Y Denmark -v- the Danish Ministry of Taxation (C-116/16 and C-117/16) and N Luxembourg 1, X Denamrk A/S, C Danmark I and Z Denmark ApS -v- the Danish Ministry of Taxation ( C115/16. C-118/16, C-119/16 and C-299/16).