Income inequality

 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. inequality in India refers to the unequal distribution of wealth and income among its citizens. According to the CIA World Factbook, the Gini coefficient of India, which is a measure of income distribution inequality, was 35.2 in 2011, ranking 95th out of 157.Wealth distribution is also uneven, with one report estimating that 54% of the country's wealth is controlled by millionaires, the second highest after Russia, as of November 2016.The richest 1% of Indians own 58% of wealth, while the richest 10% of Indians own 80% of the wealth. This trend has consistently increased, meaning the rich are getting richer much faster than the poor, widening the income gap.Inequality worsened since the establishment of income tax in 1922, overtaking the British Raj's record of the share of the top 1% in national income, which was 20.7% in 1939–40.There are wide varieties of economic inequality, most notably income inequality measured using the distribution of income (the amount of money people are paid) and wealth inequality measured using the distribution of wealth (the amount of wealth people own). Besides economic inequality between countries or states, there are important types of economic inequality between different groups of people.

Differences in national income equality around the world as measured by the national Gini coefficient as of 2018.The Gini coefficient is a number between 0 and 100, where 0 corresponds with perfect equality (where everyone has the same income) and 100 corresponds with absolute inequality (where one person has all the income, and everyone else has zero income).

Global share of wealth by wealth group, Credit Suisse, 2021

Wealth disparity in major cities

Tents of the homeless on the sidewalk in Skid Row, Los Angeles

An affluent house in Holmby Hills, Los Angeles, only miles from downtown (above)

Important types of economic measurements focus on wealth, income, and consumption. There are many methods for measuring economic inequality,the Gini coefficient being a widely used one. Another type of measure is the Inequality-adjusted Human Development Index, which is a statistic composite index that takes inequality into account. Important concepts of equality include equity, equality of outcome, and equality of opportunity.