Sales Tax & VAT Calculator
Sales tax and VAT calculator: add tax to a price, remove tax from a total, or find the tax rate from two prices.
Pgross = Pnet · (1 + t)
How to use this calculator
- Choose the quantity you want under “Solve for”.
- Type the known values and pick their units: any combination works.
- The result updates as you type. Open “Show the steps” to see the substitution.
Add sales tax or VAT to a net price, take it out of a tax-inclusive total, or work out which rate was applied. The tax amount is shown separately.
US sales tax rates depend on the state, county and city; in the UK the standard VAT rate is 20 %. Enter the rate that applies to your purchase.
Results are estimates for information only and do not constitute financial advice. Your lender’s or bank’s figures may differ.
Formula
Pgross = Pnet · (1 + t)
| Symbol | Quantity | Units |
|---|---|---|
| Pnet | Price before tax | $, €, £ |
| t | Tax rate | %, × |
| Pgross | Price including tax | $, €, £ |
Worked example
Given: Pnet = 100.00 $ · t = 8 %
Pgross = Pnet · (1 + t)
Result: Pgross = 108.00 $
Price including tax for different values of Price before tax
| Pnet · Price before tax | Pgross · Price including tax |
|---|---|
| 50.00 $ | 54.00 $ |
| 75.00 $ | 81.00 $ |
| 90.00 $ | 97.20 $ |
| 100.00 $ | 108.00 $ |
| 110.00 $ | 118.80 $ |
| 125.00 $ | 135.00 $ |
| 150.00 $ | 162.00 $ |
| 200.00 $ | 216.00 $ |
Other values as in the worked example.
Frequently asked questions
How do I remove sales tax from a total?
Divide the total by (1 + rate). For $108 including 8 % tax: 108 ÷ 1.08 = $100 before tax.
How do I calculate the tax amount?
Multiply the net price by the rate, or subtract the net price from the total.
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