surtaxPronunciation: /ˈsəːtaks/Translate surtax | into Italian Definition of surtax noun an additional tax on something already taxed, especially a higher rate of tax on incomes above a certain level: a 10 per cent surtax on incomes of more than $100,000Origin: late 19th century: from French surtaxe (see sur-1, tax)surtax in other Oxford dictionaries Definition of surtax in the US English dictionary
