Income inequality, in economics, significant disparity in the distribution of income between individuals, groups, populations, social classes, or countries. Income inequality is a major dimension of social stratification and social class. It affects and is affected by many other forms of inequality, such as inequalities of wealth, political power, and social status. Income is a major determinant of quality of life, affecting the health and well-being of individuals and families, and varies by social factors such as sex, age, and race or ethnicity.
On a global level, income inequality is extreme by any measure, with the richest 1 percent of people in the world receiving as much as the bottom 56 percent in the early 21st century. Within the United States, income inequality is much greater than in most other developed countries. In 2014, the richest 1 percent received 22 percent of total income, and the top 10 percent of U.S. households received about 60 percent of total income. Continue reading from Britannica