In this paper we combine household surveys, national accounts, income tax data and wealth data in order to estimate income concentration in the Middle East for the period 1990–2016. According to our benchmark series, the Middle East appears to be the most unequal region in the world, with a top decile income share as large as 64 percent, compared to 37 percent in Western Europe, 47 percent in the US and 55 percent in Brazil (see Alvaredo et al. 2018). This is due both to enormous inequality between countries (particularly between oil‐rich and population‐rich countries) and to large inequality within countries (which we probably under‐estimate, given the limited access to proper fiscal data). We stress the importance of increasing transparency on income and wealth in the Middle East, as well as the need to develop mechanisms of regional redistribution and investment.

This paper presents new findings about inequality dynamics in Brazil, India, the Middle East, and South Africa from the World Inequality Database (WID.world). We combine tax data, household surveys, and national accounts in a systematic manner to produce estimates of the distribution of income, using concepts coherent with macroeconomic national accounts. We document an extreme level of inequality in these regions, with top 10 percent income shares above 50 percent of national income. These societies are characterized by a dual social structure, with an extremely rich group at the top, whose income levels are broadly comparable to their counterparts in high-income countries, and a much poorer mass of the population below top groups. We discuss the diversity of regional contexts and highlight two explanations for the levels observed: the historical legacy of social segregation and modern economic institutions and policies.

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