The Global Forum on Transparency and Exchange of Information for Tax Purposes is a multilateral framework for tax transparency and information sharing, within which over 160 jurisdictions participate on an equal footing. The Global Forum monitors and peer reviews the implementation of the international standards of Exchange of Information on Request (EOIR) and Automatic Exchange of Information (AEOI). AEOI provides for the automatic exchange of a predefined set of financial account information between tax authorities on an annual basis to assist them in ensuring the correct amount of tax is paid. To ensure the AEOI standard is fully effective, the Global Forum carries out a review of each jurisdiction’s domestic and international legal frameworks to ensure they are complete, as well as a review of the effectiveness of their implementation of the standard in practice. This report presents the latest conclusions of the peer reviews of the legal frameworks put in place by each jurisdiction to implement the AEOI standard. The results relate to the more than 100 jurisdictions that committed to commence AEOI by 2020. It also contains, for the first time, the results of the Global Forum’s initial peer reviews in relation to the effectiveness in practice of the implementation of the standard.