World income inequality refers to the unequal distribution of income among individuals or households in different countries around the world. Income inequality can be measured in various ways, including the Gini coefficient, which is a statistical measure of inequality that ranges from 0 (perfect equality, where everyone has the same income) to 1 (perfect inequality, where one person has all the income).

Income inequality has been a persistent issue globally, and while there have been some improvements over time, it remains a significant challenge. According to the World Inequality Database, the top 1% of the global population owns nearly half of the world’s wealth, while the bottom 50% owns just 2.5%. The richest 10% of the global population earn 40% of the world’s income, while the poorest 10% earn just 2%.

Income inequality is particularly pronounced in developing countries, where poverty rates are high, and the gap between the rich and poor is widening. In these countries, a lack of access to education, healthcare, and other basic services can exacerbate income inequality, leading to a cycle of poverty that is difficult to break.