Article 1(2) PSD, first, and Article 49 TFEU, secondly, must be interpreted as precluding national tax legislation, such as that at issue in the main proceedings, which subjects the grant of the tax advantage provided for by Article 5(1) of that directive — namely, the exemption from withholding tax of profits distributed by a resident subsidiary to a non-resident parent company, where that parent company is directly or indirectly controlled by one or more residents of third States — to the condition that that parent company establish that the principal purpose or one of the principal purposes of the chain of interests is not to take advantage of that exemption.