Policy Brief

Since 1989, inequality in Mexico has risen, declined, and risen again. The evolution of labour income inequality is at the core of this pattern. To reverse the current trend of rising inequality, access to secondary and tertiary education should...

• Labour income
• Inequality
• Top incomes

Blog

Income inequality is the result of complex processes with multiple interacting driving forces but understanding those drivers in emerging economies is...

• Global inequality
• Economic inequality
• Top incomes

Research Brief

• Top incomes
• Income inequality
• Taxation

Policy Brief

After three decades of persistently high inequality, Brazil has been experiencing a downward trend since 2001, accompanied by a rise in household incomes. These trends lasted until 2014 when a major reversal took place on both fronts. Since the 1970s...

• Income inequality
• Fiscal redistribution
• Household income

Working Paper

Top income under-coverage in developing countries not only leads to downward biased inequality indicators but might also affect the ex-ante evaluation of progressive tax reforms. We propose a simple adjustment to top incomes for formal employees (e.g...

• Top incomes
• Survey data
• Tax data

Working Paper

With the data on the top incomes collected from different sources, we combine the samples of the top incomes with a household survey to investigate changes in the income distribution with and without the top incomes. The Gini coefficient of income...

• Top incomes
• Pareto distribution
• Income inequality

Working Paper

After three decades of persistently high income inequality, from 2001 Brazil experienced a downward inequality trend followed by rising household income growth. Both movements lasted until 2015. This work synthesizes the results of six papers...

• Income inequality
• Fiscal redistribution
• Top incomes

Working Paper

Income inequality in Mexico increased between 1989 and 1994; between 1994 and 2006, inequality declined; and, between 2006 and 2014, inequality was again on the rise. We apply decomposition techniques to analyse the proximate determinants of labour...

• Labour income
• Inequality
• Top incomes

Working Paper

Despite South Africa’s need for inclusive economic growth, we find that the income trajectories of the rich continue to diverge from the rest of the income distribution. We combine household survey data and tax data (which, unlike household survey...

• Top incomes
• Income distribution
• Tax data

Working Paper

This paper aims to assess the extent to which top earners in Ecuador were affected by the COVID-19 crisis compared to other segments of the population. Our analysis uses administrative data for individuals affiliated to social security between...

• Top incomes
• Employment
• Earnings inequality

Working Paper

Based on tax records data from Ecuador, we analyse gender differences in top income groups from 2008 to 2017. Ecuador represents an interesting case as it shares many trends with other countries in the region in terms of women’s status in the labour...

• Top incomes
• Gender inequality
• Tax data

Journal Article

Despite South Africa’s need for inclusive economic growth, we find that the top income percentiles continue to diverge from the rest of the income distribution. We compare household survey data and tax data (which, unlike household survey data...

• Top incomes
• Income distribution
• Tax data

Working Paper

We use income data from tax registers at the Uganda Revenue Authority from 2011 to 2017 to estimate top income inequality, focusing on the very top—the top 1, 0.1, and 0.01 per cent of the income distribution. The focus on the extreme top is...

• Top incomes
• Inequality
• Tax data

Technical Note

This technical note has been produced alongside a WIDER working paper assessing the effects on income inequality and income tax simulations of adjusting top incomes of employees in survey data based on administrative tax records in Ecuador. The paper...

• Top incomes
• Tax data
• Tax reform

Journal Article

Part of Journal Special Issue Income inequalities and redistribution in China

• Top incomes
• Pareto distribution
• Income inequality

Book Chapter

Part of Book Inequality in the Developing World

• Income inequality
• Fiscal redistribution
• Top incomes