View and download our datasets

UNU-WIDER has several datasets that have been created in the course of research projects and are freely downloadable.

WIID – World Income Inequality Database

Screen capture from the WIID data visualization tool.The WIID collects and stores information on income inequality for developed, developing, and transition countries. The database, its documentation, as well as a data query and visualization app are available on this website.

The latest version of the WIID, released in May 2020, covers 200 countries (including historical entities), with over 11,000 data points in total. With the current version, the latest observations now reach the year 2018.  Read more


GRD – Government Revenue Dataset

Screen shot of GRD ExplorerThe Government Revenue Dataset (GRD) includes data on government revenue, tax, and its subcomponents for over 190 countries. It presents a complete picture of trends over time at the country, regional, and cross-country levels. The GRD is updated annually, with the most recent version released in September 2019. The dataset, associated documentation, and the GRD Explorer visualisation tool are all available on this website. Read more


SOUTHMOD – Simulating tax and benefit policies for development

Photo: Joe MiserendinoWhile microsimulation models are routinely used by researchers and policy makers in developed countries, few developing countries have access to such tools. Many of the developing countries are now building up their social protection systems and the financing of public spending will need to be increasingly based on domestic tax revenues. This project aims to make tax-benefit microsimulation models available to developing countries. Read more


SAM – Social Accounting Matrices

A SAM is a consistent data framework that captures the information contained in the national income and product accounts and a supply-use table (SUT), as well as the monetary flows between institutions. Since is an ex-post accounting framework, within its square matrix, total receipts must equal total payments for each account reported by the SAM. The required data is drawn from various sources and must, therefore, be compiled and made consistent. This process is valuable since it helps identify inconsistencies among statistical sources. For example, there are invariably differences between the incomes and expenditures reported in national household surveys and national accounts. SAMs are economy-wide databases which are used in conjunction with analytical techniques to strengthen the evidence underlying policy decisions. UNU-WIDER provides Social Accounting Matrices for South Africa and MozambiqueRead more


Mozambican manufacturing firms database

The Mozambican manufacturing firms database contains data on the characteristics of companies operating in the manufacturing sector of Mozambique. It includes company data on performance, history, employment, business environment, and owner and manager backgrounds, as well as economic accounts data.

The latest version of the database, released in March 2020, tracks the economic development of over 700 companies across seven provinces in Mozambique between 2012 and 2017. Read more