Dictionary

surtax

noun sur·tax \ˈsər-ˌtaks\

: a tax that is charged on income which is more than a certain amount and that is charged in addition to the normal income tax

Full Definition of SURTAX

1
:  an extra tax or charge
2
:  a graduated income tax in addition to the normal income tax imposed on the amount by which one's net income exceeds a specified sum

First Known Use of SURTAX

1881

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