Asian Development Bank (April 2022) The brief discusses how an array of tax reforms over time, both in policy and administration, could allow more progressive structures and improved revenue performance. It notes that tax structures could be improved through broader tax bases, especially better inclusion of capital and self-employment income in personal income taxes, allowing more progressive personal income taxation. It also discusses stronger corporate taxation, increased use of property and wealth taxes, and better-designed value-added tax and excises.