Global inequality is one of the most politically charged topics in contemporary discourse, invoked in arguments across the political spectrum with statistics that are often selectively chosen to support predetermined conclusions. The honest picture of global inequality requires distinguishing between income inequality, wealth inequality, global poverty trends, and within-country versus between-country inequality — measurements that tell quite different stories. Here is what the data actually shows.
Global inequality can be measured between countries (do rich countries and poor countries converge over time?) or within countries (do the rich and poor within a given country become more or less equal?). These two measures have moved in opposite directions over recent decades. Between-country inequality has decreased significantly as Asian economies (particularly China and India) have grown rapidly, lifting hundreds of millions out of poverty and converging toward higher-income country standards. Within-country inequality has increased in most developed economies, with the share of income and wealth going to the top decile growing in the US, UK, and many European countries since the 1980s.
The Gini coefficient — the standard measure of income distribution — has increased in the US from approximately 0.35 in 1980 to approximately 0.49 in 2023, among the highest in developed countries. The wealth Gini (which measures wealth rather than income distribution) is significantly higher — the Federal Reserve's Distributional Financial Accounts show the top 1% of US households holding approximately 30% of total wealth, and the top 10% holding approximately 67%.
Global extreme poverty (defined as living on less than $2.15/day in 2017 purchasing power parity, the World Bank's current threshold) declined from approximately 36% of the global population in 1990 to approximately 9% in 2019 — one of the most significant reductions in human deprivation in history. The COVID-19 pandemic reversed some of this progress, pushing an estimated 70 million additional people into extreme poverty in 2020. The extreme poverty threshold, while standard, is set at a level that allows bare survival rather than dignified living — many researchers argue that $5-10/day thresholds better capture material deprivation in most contexts.
Honest Bottom Line: Between-country inequality has decreased significantly as Asian economies converged toward higher-income standards, lifting hundreds of millions from poverty. Within-country inequality has increased in most developed economies — US Gini rose from 0.35 (1980) to 0.49 (2023); top 10% hold 67% of US wealth. Global extreme poverty fell from 36% (1990) to 9% (2019) — genuine historic progress, partially reversed by COVID-19. The $2.15/day extreme poverty threshold captures bare survival rather than dignified living — researchers using $5-10/day thresholds find substantially higher deprivation rates. These different measures are not contradictory — they describe different dimensions of a genuinely complex picture.

Victoria Lane is an international affairs journalist with 13 years of experience covering geopolitics, global economics, and social issues across 30+ countries. She has reported from conflict zones, emerging markets, and...