Switzerland: double taxation agreement, Article 5: Permanent Establishment
(1) For the purposes of this Convention, the term `permanent establishment` means a fixed place of business through which the business of an enterprise is wholly or partly carried on.
(2) The term `permanent establishment` includes especially:
(a) a place of management,
(b) a branch,
(c) an office,
(d) a factory,
(e) a workshop and
(f) a mine, an oil or gas well, a quarry or any other place of extraction of natural resources.
(3) A building site or construction or installation project constitutes a permanent establishment only if it lasts more than twelve months.
(4) Notwithstanding the preceding provisions of this Article, the term `permanent establishment` shall be deemed not to include:
(a) the use of facilities solely for the purpose of storage, display or delivery of goods or merchandise belonging to the enterprise;
(b) the maintenance of a stock of goods or merchandise belonging to the enterprise solely for the purpose of storage, display or delivery;
(c) the maintenance of a stock of goods or merchandise belonging to the enterprise solely for the purpose of processing by another enterprise;
(d) the maintenance of a fixed place of business solely for the purpose of purchasing goods or merchandise or of collecting information, for the enterprise;
(e) the maintenance of a fixed place of business solely for the purpose of carrying on, for the enterprise, any other activity of a preparatory or auxiliary character;
(f) the maintenance of a fixed place of business solely for any combination of activities mentioned in sub-paragraphs (a) to (e), provided that the overall activity of the fixed place of business resulting from this combination is of a preparatory or auxiliary character.
(5) Notwithstanding the provisions of paragraphs (1) and (2), where a person-other than an agent of an independent status to whom paragraph (6) applies-is acting on behalf of an enterprise and has, and habitually exercises, in a Contracting State an authority to conclude contracts in the name of the enterprise, that enterprise shall be deemed to have a permanent establishment in that State in respect of any activities which that person undertakes for the enterprise, unless the activities of such a person are limited to those mentioned in paragraph (4) which, if exercised through a fixed place of business, would not make this fixed place of business a permanent establishment under the provisions of that paragraph.
(6) An enterprise shall not be deemed to have a permanent establishment in a Contracting State merely because it carries on business in that State through a broker, general commission agent or any other agent of an independent status, provided that such persons are acting in the ordinary course of their business.
(7) The fact that a company which is a resident of a Contracting State controls or is controlled by a company which is a resident of the other Contracting State or which carries on business in that other State (whether through a permanent establishment or otherwise), shall not of itself constitute either company a permanent establishment of the other.