Switzerland: double taxation agreement, Article 9: Associated enterprises
(a) an enterprise of a Contracting State participates directly or indirectly in the management, control or capital of an enterprise of the other Contracting State. or
(b) the same persons participate directly or indirectly in the management, control or capital of an enterprise of a Contracting State and an enterprise of the other Contracting State, and in either case conditions are made or imposed between the two enterprises in their commercial or financial relations which differ from those which would be made between independent enterprises, then any income, deductions, receipts or outgoings which would, but for those conditions, have been attributed to one of the enterprises, but, by reason of those conditions, have not been so attributed, may be included in the profits or losses of that enterprise and taxed accordingly.
(2) Where a Contracting State includes in the profits of an enterprise of that State–and taxes accordingly–profits on which an enterprise of the other Contracting State has been charged to tax in that other State and the items so included comprise income, deductions, receipts or outgoings which would have been attributed to the enterprise of the first-mentioned State if the conditions made between the two enterprises had been those which would have been made between independent enterprises, then the competent authorities of the Contracting States may consult together with a view to reaching an agreement on the adjustment of profits or losses in both Contracting States.