On 29 August 2019, Canada deposited its ratification instrument for the Multilateral Convention to Implement Tax Treaty Related Measures (MLI) to Prevent Base Erosion and Profit Shifting.

The MLI would enter into force on the first day of the month following the expiration of a period of three calendar months beginning on the date of the deposit of their respective instruments of ratification. Therefore, with respect to Canada, the MLI will enter into force on 1 December 2019, although its entry into force will depend on the ratification of the MLI by the counterparty to a particular covered agreement.