Measuring Inequality Apr 2026

: This graph plots the cumulative percentage of total income received against the cumulative percentage of the population. A perfectly equal society would follow a 45-degree "line of equality".

Measuring inequality is a complex process that involves reducing the diverse economic lives of millions of people into single, comparable metrics like the Gini coefficient . While it serves as a vital tool for policymakers to track progress and evaluate the effectiveness of redistribution policies , the choice of metric—whether looking at income, wealth, or consumption—can drastically alter the perceived level of disparity in a society. Core Tools of Measurement Measuring inequality

Because the Gini coefficient can be insensitive to changes at the extreme ends of the distribution, researchers often use other indices for specific goals: Measuring inequality: what is the Gini coefficient? : This graph plots the cumulative percentage of