Global Inequality in 2026: The Honest Guide to What the Data Shows
Inequality is widely discussed but often misunderstood. Here is the honest guide to what the data actually shows.
Inequality — the distribution of income, wealth, and opportunity within and between societies — is one of the most politically charged topics in economics, and one where the data tells a more complicated story than either progressive or conservative framings typically acknowledge. Here is the honest guide to what the data actually shows about global and national inequality.
Global vs National Inequality: The Opposite Trends
The most important and most frequently missed distinction in inequality discussion: global inequality (between all people on earth, regardless of nationality) and national inequality (within specific countries) have moved in opposite directions over the past three decades. Global inequality has declined substantially since 1990, driven primarily by China's extraordinary economic growth that has lifted hundreds of millions from poverty and reduced the income gap between the global rich and global poor. National inequality within many countries, including the United States, has increased over the same period, as the gains from economic growth have been distributed less evenly within national economies. These trends are not contradictory — they reflect different units of analysis — but conflating them produces significant confusion in inequality discourse.
Wealth vs Income Inequality
Wealth inequality (the distribution of assets — property, financial investments, business ownership) is substantially higher than income inequality (the distribution of annual earnings) in most developed economies and has increased more dramatically. The top 1% in the United States holds approximately 30–35% of total national wealth; the bottom 50% holds approximately 2–3%. Income inequality, while significant, is less extreme than wealth inequality because income includes labor income from the large majority of people while wealth is more concentrated in financial and real assets owned predominantly by the top deciles. Piketty's observation that returns to capital (r) have historically exceeded economic growth (g) — making wealth inequality self-reinforcing over time — has become one of the most discussed economic frameworks of the past decade.
Mobility: The Data That Matters for Life Chances
The inequality metric that most determines individual life outcomes is social mobility — the degree to which where you are born in the income distribution predicts where you will end up. The "Great Gatsby Curve" (higher inequality correlates with lower intergenerational mobility) is documented across countries: the Scandinavian countries with lower inequality have higher mobility; the United States and UK with higher inequality have lower mobility. The probability that a US child born to parents in the bottom income quintile will reach the top quintile as an adult is approximately 7.5% — significantly lower than the "equal opportunity" ideal and lower than many European countries with stronger social mobility traditions.
Bottom Line: Global inequality (between all people) has declined since 1990 — China's growth reduced global rich-poor gap. National inequality (within countries) has increased in many countries including the US simultaneously — opposite trends reflecting different units of analysis. Wealth inequality is substantially higher than income inequality: US top 1% holds 30–35% of national wealth; bottom 50% holds 2–3%. Social mobility data: "Great Gatsby Curve" shows higher inequality correlates with lower intergenerational mobility — US bottom quintile children have 7.5% probability of reaching top quintile, lower than many European comparators.