ARTICLE 18
Pensions
(1) Subject to the provisions of paragraph 2 of Article 19, pensions and other similar remuneration arising in a Contracting State and paid to a resident of a Contracting State in consideration of past employment may be taxed only in that Contracting State.
(2) However, such pensions and other similar remuneration may also be taxed in the other Contracting State if the payment is made by a resident of that other Contracting State or a permanent establishment situated therein.
(3) Notwithstanding the provisions of paragraphs 1 and 2 of this Article, pensions paid and other payments made under public schemes which are parts of the social security system of a Contracting State, a political subdivision or a local authority thereof shall be taxable only in that Contracting State.