progressive tax
US /prəˌɡres.ɪv ˈtæks/
UK /prəˌɡres.ɪv ˈtæks/

1.
累進課税
a tax in which the tax rate increases as the taxable amount increases
:
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Many countries implement a progressive tax system to reduce income inequality.
多くの国が所得格差を減らすために累進課税制度を導入しています。
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The new budget proposal includes a higher progressive tax rate for high earners.
新しい予算案には、高所得者向けのより高い累進課税率が含まれています。