surtax   (TTS Sound)

The surtax has 2 Senses.

• supertax, surtax
• an additional tax on certain kinds of income that has already been taxed
• 既に課税されたある種の所得に課される追加税

• surtax
• levy an extra tax on; "surtax luxury items that cost more than $1,000"
• 追加の税金を課す