Judgment of the Court of Justice in the case Hervis Sport- és Divatkereskedelmi.
Articles 49 TFEU and 54 TFEU must be interpreted as precluding legislation of a Member State relating to tax on the turnover of store retail trade which obliges taxable legal persons constituting, within a group, ‘linked undertakings' within the meaning of that legislation, to aggregate their turnover for the purpose of the application of a steeply progressive rate, and then to divide the resulting amount of tax among them in proportion to their actual turnover, if – and it is for the referring court to determine whether this is the case – the taxable persons covered by the highest band of the special tax are ‘linked', in the majority of cases, to companies which have their registered office in another Member State.