progressive tax

US /prəˌɡres.ɪv ˈtæks/
UK /prəˌɡres.ɪv ˈtæks/
"progressive tax" picture
1.

a tax in which the tax rate increases as the taxable amount increases

:
Many countries implement a progressive tax system to reduce income inequality.
The new budget proposal includes a higher progressive tax rate for high earners.