progressivity

/ˌprɑɡrɛˈsɪvɪti/
noun
  1. The quality of increasing in rate or amount as something grows, especially in taxes where higher earners pay a larger percentage.
    • Economists debate the ideal level of progressivity in a tax system.
    • The progressivity of the income tax means the rich pay a higher rate than the poor.
    • Some countries have reduced progressivity in their tax codes, making them less fair.
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