Sales Tax Calculator
Sales tax calculator: total price with tax, the tax amount, or the price before tax from a total. Works with any US state or local rate.
T = P · (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.
Total = price × (1 + rate). To remove tax from a total, divide by (1 + rate).
Combined state and local rates in the US range from 0 % to about 10 %.
Formula
T = P · (1 + t)
| Symbol | Quantity | Units |
|---|---|---|
| P | Price before tax | $, €, £ |
| t | Tax rate | %, × |
| T | Price with tax | $, €, £ |
Worked example
Given: P = 100.00 $ · t = 8.25 %
T = P (1 + t)
Result: T = 108.25 $
Price with tax for different values of Price before tax
| P · Price before tax | T · Price with tax |
|---|---|
| 50.00 $ | 54.13 $ |
| 75.00 $ | 81.19 $ |
| 90.00 $ | 97.43 $ |
| 100.00 $ | 108.25 $ |
| 110.00 $ | 119.08 $ |
| 125.00 $ | 135.31 $ |
| 150.00 $ | 162.38 $ |
| 200.00 $ | 216.50 $ |
Other values as in the worked example.
Frequently asked questions
$100 at 8.25 %?
$108.25, of which $8.25 is tax.
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