Sales Tax Calculator
Enter a price and tax rate to calculate tax and final total.
Sales tax formula
Convert the tax percentage to a decimal before multiplying. For example, 7.25% becomes 0.0725.
Common sales-tax examples on a $100 purchase
| Tax rate | Tax | Total |
|---|---|---|
| 5% | $5.00 | $105.00 |
| 6% | $6.00 | $106.00 |
| 7.25% | $7.25 | $107.25 |
| 8% | $8.00 | $108.00 |
Discount first, then tax
When tax applies to the discounted selling price, calculate the discount first and then multiply the reduced price by the tax rate. The discount calculator can do both steps.
Reverse sales tax
If you know a tax-inclusive total and the tax rate, divide the total by 1 + tax rate to estimate the pre-tax amount. Then subtract that pre-tax amount from the total to find the tax portion.
Related percentage tools
Use the percentage change calculator for increases or decreases and see how to calculate percentage increase for the underlying formula.
Frequently asked questions
Do I add the tax percentage directly to the price?
Multiply the price by the decimal tax rate to find the tax amount, then add that amount to the price.