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surtax

1 ENTRIES FOUND:
surtax /ˈsɚˌtæks/ noun
plural surtaxes
surtax
/ˈsɚˌtæks/
noun
plural surtaxes
Britannica Dictionary definition of SURTAX
[count]
: 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