Tax capacity-the policy, institutional, and technical capabilities to collect tax revenue-is part of a deeper process of state building that is essential for achieving the sustainable development goals. This Staff Discussion Note shows that developing countries have made some progress in revenue...

Inequality has increased in recent years in both developed and developing countries. Tax experts, like others, have focused on how taxes may reduce the inequality of income and wealth. In developed countries, the income tax, especially the personal income tax, has long been viewed as the primary...

The dual income tax combines a progressive tax on labor income and a lower flat rate tax on income from capital. Denmark, Finland, Norway, and Sweden adopted dual income taxes to address a set of tax challenges that arose in the late 1980s and early 1990s. Although developing countries face much...

Academics and others over the last 50 years have called for developing countries to hesitate or refrain from entering into bilateral tax treaties with developed countries. Tax treaties seek to facilitate cross-border transactions and investments by reducing tax barriers and providing greater...

Tax systems in developing countries, like those in more developed countries, face both new challenges and new possibilities as a result of technological change. In developing countries, taxpayers and tax administrations must cope with more difficult environments with fewer resources. Some issues...