Federal Corporate Income Tax Rates
https://corporatetax.procon.org/federal-corporate-income-tax-rates/
WebOct 20, 2021 · On Jan. 1, 2018, the corporate tax rate was changed from a tiered structure that staggered corporate tax rates based on company income to a flat rate of 21% for all companies. (a) In addition to the rates shown, certain types of ‘excess profits’ levies were in effect in 1917-1921 and 1933-1945.
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