For ADB members in Asia and the Pacific, stronger tax systems are now more important than ever—to boost revenues enabling recovery from the economic shocks of COVID-19, and to reinforce implementation of Sustainable Development Goals. Using comparative data up to the fiscal year 2020, and drawing from the International Survey on Revenue Administration (ISORA 2021), this sixth edition in our series analyzes the administrative setups and performance of revenue bodies in 40 economies across the region—to help governments and officials identify promising options for building more efficient, inclusive tax systems.