ARTICLE 29

Entry Into Force

1. The Contracting States shall notify each other when their respective constitutional and statutory requirements for the entry into force of this Convention have been satisfied. The Convention will enter into force on the date of receipt of the later of such notifications.

2. The provisions of the Convention shall have effect:

a) in respect of taxes imposed in accordance with Articles 10 (Dividends), 11 (Interest), and 12 (Royalties), for amounts paid or credited on or after the first day of the second month next following the date on which the Convention enters into force if the Convention enters into force prior to July 1 of that year; otherwise, on the first day of January of the year following the year in which the Convention enters into force;

b) in respect of other taxes, for taxable periods beginning on or after the first day of January of the year following the year in which the Convention enters into force.

3. The existing agreement between the United Mexican States and the United States of America for the avoidance of double taxation of income derived from the operation of ships or aircraft in international traffic concluded by exchange of notes of August 7, 1989, shall terminate upon the entry into force of the Convention. However, the provisions of the said agreement shall continue in effect until the provisions of the Convention, in accordance with the provisions of paragraph 2(b), shall have effect.