The Multilateral Convention to Implement Tax Treaty Related Measures to Prevent Base Erosion and Profit Shifting, also known as the Multilateral Instrument (MLI), is a multilateral treaty that enables jurisdictions to swiftly modify the operation of their tax treaties to implement measures designed to better address multinational tax avoidance and more effectively resolve tax disputes. These measures were developed as part of the OECD/G20 Base Erosion and Profit Shifting (BEPS) project.