1. Where the tax situation of one or more persons liable to tax is of common or complementary interest to two or more Member States, those States may agree to conduct simultaneous controls, in their own territory, with a view to exchanging the information thus obtained, whenever they would appear to be more effective than controls conducted by one Member State alone.
2. The competent authority in each Member State shall identify independently the persons liable to tax whom it intends to propose for simultaneous control. It shall notify the respective competent authorities in the other Member States concerned of the cases which, in its view, should be subject to simultaneous control. It shall give reasons for its choice, as far as possible, by providing the information which led to its decision. It shall specify the period of time during which such controls should be conducted.
3. The competent authority of each Member State concerned shall decide whether it wishes to take part in