売上税計算機
数値を入力して計算してください。
計算方法
If the price excludes tax: sales tax = price × quantity × rate / 100. If the price includes tax: pre-tax amount = total price ÷ (1 + rate / 100), and tax is the difference. The exact rate and taxable status depend on local rules.
よくある質問
Is the sales tax rate automatically updated?
No. You enter a rate that applies to your transaction.
Can I enter prices that already include tax?
Yes. Choose “Price includes tax” to extract the included amount.
関連する計算機
重要な情報
Calculate sales tax and total payment using a tax rate you enter, with price-inclusive or price-exclusive modes. All figures depend on user-provided amounts. No loans, interest or guaranteed investment returns are computed. Calculator field labels and explanatory content are currently presented in English in this locale.