The subject of the article is an analysis of the case law of the Court of Justice of the European Union regarding VAT invoices. The author tries to determine whether the Court considers these invoices formalistically and whether it concludes that only correct invoices give the right to deduct input tax on output tax. The analysis of the jurisprudence of the Court of Justice of the European Union lead to the conclusion that it rejected the formalistic approach to possession of correctly issued invoices as a formal condition for exercising the right to deduct input tax on output tax. In practice, this means that the tax authorities of the Member States do not have the right to refuse the taxpayer the right to make this deduction if all the ma...