Knowledge Tree
Gini coefficient
Also known as: Gini coefficients, Gini index
Facts (18)
Sources
Forms of Government: Change - What Is Economic Inequality? education.cfr.org Jun 9, 2025 6 facts
claimSince the World Bank began tracking inequality in the 1970s, many European countries have maintained relatively low Gini coefficients, while countries in sub-Saharan Africa and South America have typically struggled more with inequality.
claimThe Gini coefficient is a metric used by economists to provide a high-level overview of a country's economic inequality.
measurementThe United States had a Gini coefficient of 0.413 in 2022.
measurementSouth Africa had a Gini coefficient of 0.63 in 2014, making it one of the most unequal countries in the world.
claimThe Gini coefficient is a tool used by economists to capture income inequality, where a score of zero represents perfectly equal income distribution and a score of one represents a scenario where one person controls the entire country’s economy.
measurementFinland had a Gini coefficient of 0.277 in 2021.
Revision Notes - The role of government in reducing inequality | IB DP sparkl.me 5 facts
claimThe implementation of progressive taxation in Scandinavian countries is associated with lower Gini coefficients and higher levels of economic mobility, indicating effective inequality reduction.
claimThe Gini coefficient, poverty rates, and economic mobility indicators are commonly used metrics to evaluate the effectiveness of government policies in reducing inequality.
claimEconomic inequality is measured using indicators such as the Gini coefficient, income percentiles, and wealth distribution curves.
referenceThe Lorenz Curve, coupled with the Gini coefficient, offers a graphical and quantitative measure of income distribution disparities.
formulaThe Gini coefficient is calculated as Gini Coefficient = A / (A + B), where A represents the area between the Lorenz curve and the line of perfect equality, and B is the area under the Lorenz curve.
Energy asset stranding in resource-rich developing countries and ... frontiersin.org Jun 10, 2024 3 facts
measurementThe GINI index in Norway and the Netherlands is slightly below 30, while the GINI index in Brazil is 54.
measurementNigeria has a GINI index of approximately 35, which is in the same order of magnitude as other Sub-Saharan African countries, according to 2021 World Bank data.
measurementThe GINI index in the United States is approximately 40, which is higher than the GINI index in Nigeria.
The impact of monetary policy on income and wealth inequality cepr.org Feb 11, 2022 2 facts
claimSecurities purchase programmes have an impact on Gini coefficients of a similar magnitude to key policy rate reductions.
measurementThe impact of monetary policy on income and wealth inequality is limited in Finland, with the Gini coefficient on gross income increasing by 0.05 percentage points and the Gini coefficient on net wealth increasing by 0.2 percentage points within two years after a reduction in the key policy rate.
How do taxes affect income inequality? - Tax Policy Center taxpolicycenter.org 2 facts
formulaThe Gini index is a measure of income inequality where a value of zero represents perfectly equal income distribution and a value of one represents a scenario where the highest income group receives all income.
claimThe Gini index for after-tax income has been consistently lower than the Gini index for before-tax income, indicating that taxes reduce income inequality.