By Kieron L Jones, on 28 April 2009
The World Income Inequality Database is a joint project of the United Nations Development Programme (UNDP) and the United Nations University / World Institute for Development Economics Research (UNU / WIDER). The project aims at “critically evaluating different methods of measuring income inequality, understanding the dynamics of the relationship between economic growth, poverty alleviation, and income inequality”.
The database is an extension of the Deininger-Squire World Bank database and is regularly updated. It provides income inequality data at both time series and country level. The data covers changes in income inequality over the period from 1950, with an emphasis on 1980 onwards with coverage of over 150 countries. The database provides information on: gross, net and taxable incomes; earnings and expenditure; main income recipient units; rural and urban data. You can browse the Gini Ratios inequality indexes for a number of different income series for various countries. Additionally, there is a useful bibliography of articles related to the research area.