On 9 February 2022, Thailand, Lesotho, and Vietnam signed the Multilateral Convention to Implement Tax Treaty Related Measures to Prevent Base Erosion and Profit Shifting (MLI).

Thailandā€™s MLI position identifies 58 double tax agreements (DTAs) that it wishes to be covered by the MLI. Vietnamā€™s MLI position identifies 75 DTAs that it wishes to be covered, while Lesothoā€™s provisional list of reservations and notifications to the MLI identifies 7 DTAs that it wishes to be covered by the convention.