Judgment_paragraph 40 · Euro Tyre BV – Sucursal em Portugal v Autoridade Tributária e Aduaneira (C-21/16)

40It must be note pointed out that, according to the Court’s case-law, it is not contrary to EU law to require an operator to act in good faith and to take every step which could reasonably be asked of it to satisfy itself that the transaction which it is carrying out does not result in its participation in tax evasion (judgment of 6 September 2012, Mecsek-Gabona , C‑273/11, EU:C:2012:547, paragraph 48 and the case-law cited). If the taxable person concerned knew or should have known that the transaction which it had carried out was part of a fraud committed by the purchaser and that the taxable person had not taken every step which could reasonably be asked of it to prevent that fraud from being committed, that person would have to be refused a VAT exemption (judgment of 6 September 2012, Mecsek-Gabona , C‑273/11, EU:C:2012:547, paragraph 54).