Sales Tax Calculator - Add or Remove Tax

  • Add tax to net amount
  • Remove tax from gross amount
Results
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Add or remove sales tax from any price with our Sales Tax Calculator. Enter an amount and the tax rate, choose whether the amount is before tax (add) or after tax (remove), and get the net amount, tax portion, and gross total instantly.

The "add" mode answers the everyday question: what will I actually pay at the register? The "remove" mode backs the tax out of a total — useful for reading receipts, splitting invoice lines, or finding the pre-tax price of an item when only the total is shown.

The math works for any consumption tax: US sales tax, Canadian GST/HST/PST, and European VAT all use the same percentage arithmetic. State rates in the US range from 0% to 7.25%, with combined local rates often reaching 9-10% in major cities — enter your exact rate for precise results.

公式
Add: gross = net × (1 + rate%) | Remove: net = gross ÷ (1 + rate%)

よくある質問

How do I add sales tax to a price?
Multiply the net price by (1 + tax rate). For a $100 item at 8% tax: $100 × 1.08 = $108 total. The calculator shows the tax portion separately.
How do I remove tax from a total?
Divide the gross amount by (1 + tax rate). For $108 total at 8% tax: $108 ÷ 1.08 = $100 net, with $8 being tax. This is useful for receipts that show only the total.
What is the average sales tax rate in the US?
State rates range from 0% (Oregon, Montana) to 7.25% (California base), and combined state + local rates often reach 9-10% in cities. Check your state and local rates for accuracy.
Is sales tax the same as VAT?
No. Sales tax is added at the final sale to the consumer, while VAT is collected at every stage of the supply chain. Both are calculated with the same math shown here.

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