surtax
Americannoun
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an additional or extra tax on something already taxed.
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one of a graded series of additional taxes levied on incomes exceeding a certain amount.
verb (used with object)
noun
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a tax, usually highly progressive, levied on the amount by which a person's income exceeds a specific level
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an additional tax on something that has already been taxed
verb
Etymology
Origin of surtax
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The sales by his children don’t boost his adjusted gross income, which in turn could raise his Medicare Irmaa premiums or his 3.8% surtax on net investment income.
From The Wall Street Journal ● Oct. 8, 2026
That includes 37% federal income tax, plus a 3.8% federal surtax on investment income, plus state and local taxes rising as high as 13.3% in California and 14.8% in New York City.
From MarketWatch ● Sep. 25, 2026
Jenkins noted that Lyndon Johnson was forced to seek an income surtax in 1968 because he was worried about possible negative reactions in gold and the dollar from the “guns and butter” U.S. policies.
From Barron's ● Jun. 5, 2026
Supermarket bosses highlighted that part of the government's business rates reforms posed a problem for the industry, in particular the so-called business rates surtax, which is being levied on all large commercial premises.
From BBC ● Oct. 25, 2025
I have communicated with the President-elect, Mr. Nixon, in connection with this policy of continuing the surtax for the time being.
From State of the Union Address by Lyndon B. (Lyndon Baines) Johnson
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
