ARTICLE 18
Pensions and Annuities
(1) Subject to the provisions of paragraph 2 of Article 19, pensions and other similar remuneration paid to a resident of a Contracting State in consideration of past employment shall be taxable only in that State.
(2) Notwithstanding the provisions of paragraph 1 of this Article, payments made under the social security legislation of a Contracting State shall be taxable only in that State.
(3) The term "annuity" means a stated sum payable to an individual periodically at stated times during his life or during a specified or ascertainable period of time under an obligation to make the payments in return for adequate and full consideration in money or money's worth.