(1) Items of income beneficially owned by a resident of a Contracting State, wherever arising, which are not dealt with in the foregoing Articles of this Convention, other than income paid out of trusts or the estates of deceased persons in the course of administration, shall be taxable only in that State.
(2) The provisions of paragraph (1) of this Article shall not apply to income, other than income from immovable property as defined in paragraph (2) of Article 6 of this Convention, if the recipient of such income, being a resident of a Contracting State, carries on business in the other Contracting State through a permanent establishment situated therein, or performs in that other State independent personal services from a fixed base situated therein, and the right or property in respect of which the income is paid is effectively connected with such permanent establishment or fixed base. In such case the provisions of Article 7 or Article 14 of this Convention, as the case may be, shall apply.
(3) Where, by reason of a special relationship between the payer of income under this Article and the beneficial owner, or between both of them and some other person, the amount of the payment exceeds, for whatever reason, the amount which would have been agreed upon by the payer and the beneficial owner in the absence of such relationship, the provisions of this Article shall apply only to the last mentioned amount. In such case, the excess part of the payment shall remain taxable according to the laws of each Contracting State, due regard being had to the other provisions of this Convention.
(4) The provisions of this Article shall not apply if it was the main purpose or one of the main purposes of any person concerned with the creation or assignment of the rights in respect of which the income is paid to take advantage of this Article by means of that creation or assignment.