Article 56 TFEU precludes legislation, such as that at issue in the main proceedings, under which companies established in one Member State using workers employed and seconded by temporary employment agencies established in another Member State, but operating in the first Member State through a branch, are obliged to withhold tax and to pay to the first Member State an advance payment on the income tax due by those workers, whereas the same obligation is not imposed on companies established in the first Member State which use the services of temporary employment agencies established in that Member State.

C-53/13 and C-80/13