With the participation of 58 jurisdictions accounting for around 90% of global GDP, the tenth edition of the OECD’s Tax Administration Series (TAS 2022) provides a comprehensive view of the state of tax administration in 2020. The report, which provides comparative information in 76 tables covering tax administration performance and profile data, is intended to assist tax administrations in consideration of where further improvements might be made, as well to enhance wider public understanding as to the scale and the changing nature of global tax administration. This 2022 edition also attempts to draw out, from both the data provided through the International Survey of Revenue Administrations (ISORA) and the more than 100 examples received from over 35 tax administrations, the most significant changes that tax administrations are dealing with. It focuses in particular on how tax administrations are increasingly looking at the opportunities to take more proactive approaches to influencing and managing compliance as well as the challenges they face in adapting to the changing resource requirements.