ARTICLE 18
Pensions
(1) Subject to the provisions of paragraph (2) of Article 19, pensions and other similar remuneration paid in consideration of past employment to a resident of a Contracting State, shall be taxable only in that State, in accordance with its domestic laws.
(2) Notwithstanding the provisions of paragraph (1), pensions and other payments under the public social security legislation or civil service law of a Contracting State may be taxed in that State.