Blog

Income inequality is the result of complex processes with multiple interacting driving forces but understanding those drivers in emerging economies is particularly difficult because of data and analytical challenges...

Seminar

UNU-WIDER Senior Research Fellow Rachel Gisselquist will give a presentation at an expert group meeting ‘ Reducing Inequalities: SDG 10 Progress and Prospects ’, organized by the World Bank and UN DESA in Geneva 2-3 April. The event will...

Panel discussion

Presentation

The Human Development Report Office , LIS , the Stone Center at the City University of New York (CUNY), UNU-WIDER and the World Inequality Lab will host a symposium on Measuring Inequality in the 21st Century. The 2-day event will be held 28-29...

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...