Database

The current revision ― WIID4 ― is the fourth major update of the database. The observations now reach the year 2017 and coverage is extended to 189 countries (including historical entities), with over 11,000 data points in total. There are now...

News

The UNU-WIDER World Income Inequality Database ― widely known by its acronym WIID ― presents information on income inequality for developed, developing, and transition countries. The WIID provides the most comprehensive set of income inequality...

Parallel session

The economics profession has witnessed an increasing interest in the analysis of inequality of income and wealth with a global perspective. This has led to a growing research trying to understand the trends and driving forces of global inequality,...

Presentation

The recently established Research Facility on Inequalities is funded by the European Commission under its Development Cooperation Instrument . The Research Facility on Inequalities is implemented by Agence Française de Développement (...

In the media

An editorial published in Business Day, a daily business newspaper based in Lagos, has drawn on the World Income Inequality Database (WIID) to point to Nigeria’s growing inequality. The piece uses the database along with measures from the...

Database

The current revision ― WIID3.4 ― is an update of the third major revision of the database, WIID3. The current version includes observations for six additional countries, with the latest observations now reaching the year 2015. In total, the data...

News

The UNU-WIDER World Income Inequality Database ― widely known by its acronym WIID ― collects and stores information on income inequality for developed, developing, and transition countries. WIID provides the most comprehensive set of income...

Seminar

Article

Inequality is typically viewed as different people or households having different degrees of living standards. Thus, inequality is concerned with the relative position of different individuals (or households) within a distribution. Why does it...

Database

​WIID3.0 consists of a checked and corrected WIID2.0 and new estimates from National Survey statistics obtained from the respective country official websites, the Socio-Economic Database for Latin America and the Caribbean, Transmonee, Luxembourg...

About

Q: What should I cite as the source when I use WIID for publications? Please cite this database version (along with the version date) as: UNU-WIDER, World Income Inequality Database (WIID4). Q: Why are there several estimates reported per country...

Database

WIID3 consists of a checked and corrected WIID2 and new estimates from National Survey statistics obtained from the respective country official websites, the Socio-Economic Database for Latin America and the Caribbean, Transmonee, Luxembourg Income...

About

Download factsheets on the data sources for individual countries.

Video

Parallel 3.1 of the 30th anniversary conference. Presenters: Ravi Kanbur, Jukka Pirttilä and Finn Tarp.

Journal Article

Professor Stephen Jenkins (this issue) has conducted an extremely careful and insightful analysis of two datasets, WIID and SWIID...

News

The Society for the Study of Economic Inequality has commissioned a series of papers appraising databases containing information about inequality in different countries and globally.These evaluations are forthcoming in a special issue of The Journal...