[ soo-per-taks ]

  1. Chiefly British. a tax in addition to a normal tax, as one upon income above a certain amount.

  2. a surtax.

Origin of supertax

First recorded in 1905–10; super- + tax

Words Nearby supertax Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use supertax in a sentence

  • Thank Heaven, she says, hes got somebody thatll be able to keep him when the supertax is put up to twenty shillings in the pound.

    Press Cuttings | George Bernard Shaw
  • Income-tax and supertax doubled and charged on one-third of the current year's income.

  • What we call the normal income tax is the ordinary tax; what we call the surtax is the supertax.

    The American Language | Henry L. Mencken
  • The rate of this supertax should increase with the size of the estate above the fixed maximum.

    Distributive Justice | John A. (John Augustine) Ryan
  • For situations of this kind a supertax on large estates would seem to hold the promise of a large measure of relief.

    Distributive Justice | John A. (John Augustine) Ryan

British Dictionary definitions for supertax


/ (ˈsuːpəˌtæks) /

  1. a tax levied in addition to the basic tax, esp a graduated surtax on incomes above a certain level

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012