supertax

[ soo-per-taks ]
/ ˈsu pərˌtæks /

noun

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

Origin of supertax

First recorded in 1905–10; super- + tax
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for supertax

British Dictionary definitions for supertax

supertax
/ (ˈsuːpəˌtæks) /

noun

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