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Gini coefficient income inequality measure


Source: Institute for Fiscal Studies – Living standards, poverty and inequality in the UK: 2020


  • The Gini coefficient is the most widely used summary measure of inequality in the distribution of household income; the lower the value, the more equally household income is distributed (Source: Office for National Statistics). The chart shows the Gini coefficient for Great Britain in calendar years between 1961 and 1993, and in financial years from 1993/94 to 2018/19.
  • Incomes have been measured net of taxes and benefits, but before housing costs have been deducted, and have been equivalised using the modified OECD equivalence scale.
  • Calculations used the Family Expenditure Survey (FES) for data covering the period of 1961 to 1993, and the Family Resources Survey (FRS) for data covering the period of 1994-95 to 2018-19.