ARTICLE 28

Entry into Force

This Article contains the rules for bringing the Convention into force and giving effect to its provisions.

Paragraph 1

Paragraph 1 provides that each State must notify the other as soon as its ? constitutional requirements ? for ratification have been complied with. The constitutional requirements include ratification.

In the United States, the process leading to ratification and entry into force is as follows:

Once a treaty has been signed by authorized representatives of the two Contracting States, the Department of State sends the treaty to the President who formally transmits it to the Senate for its advice and consent to ratification, which requires approval by two-thirds of the Senators present and voting. Prior to this vote, however, it generally has been the practice for the Senate Committee on Foreign Relations to hold hearings on the treaty and make a recommendation regarding its approval to the full Senate. Both Government and private sector witnesses may testify at these hearings. After receiving the Senate's advice and consent, the treaty is returned to the President for his signature on the ratification document. The President's signature on the document completes the process in the United States.

Paragraph 2

Paragraph 2 provides that the Convention will enter into force 30 days after the date on which the second of the two notifications of the completion of ratification requirements has been received. The date on which the Convention enters into force is not necessarily the date on which its provisions take effect. Paragraph 2, therefore, also contains rules that determine when the provisions of the treaty will have effect.

Under paragraph 2(a), the Convention will have effect with respect to taxes withheld at source (principally dividends, interest and royalties) for amounts paid or credited on or after the first day of January next following the date on which the Convention enters into force. For example, if the second notice of ratification is received on September 25 of 1997, the withholding rates specified in paragraph 2 of Article 10 (Dividends) would be applicable to any dividends paid or credited on or after January 1, 1998.

For all other taxes, paragraph 2(b) specifies that the Convention will have effect for any taxable year or assessment period beginning on or after January 1 of the year following entry into force.

As discussed under Articles 25 (Mutual Agreement Procedure) and 26 (Exchange of Information), the powers afforded the competent authority under these Articles may be applied retroactively to taxable periods preceding entry into force.