surtaxes

n.an additional tax on certain kinds of income that has already been taxed

同义词：supertax

v.levy an extra tax on

"surtax luxury items that cost more than $1,000"

Impôts locaux, de taxes en taxes et surtaxes, TROP c'est TROP !... Faut-il une insurrection fiscale ?
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1945 Chap. 0557. An Act Further Extending Temporary Surtaxes On Certain Subjects Of Existing Taxation.