How It Works
Enter the price before tax and the combined sales tax rate that applies to your purchase. The calculator multiplies the price by the tax rate to find the tax amount, then adds it to the price for your total.
Formula
- Price — Price before tax
- Rate — Combined sales tax rate, as a percentage
Example
Example inputs: Price $249.99, tax rate 7.25%.
Result: Sales tax amount: $18.12. Total price: $268.11.
Frequently Asked Questions
What tax rate should I use?
Use the combined state, county, and city rate that applies at the point of sale. Rates vary across the U.S. and change periodically — check your state or local tax authority's website for the current rate in your area.
Are all purchases taxed the same way?
No. Many states exempt or reduce tax on categories like groceries, prescription medication, or clothing, and some apply different rates to services versus goods. This calculator applies a single flat rate to the full price you enter.
Can I use this to back into a pre-tax price from a total?
Not directly — this calculator adds tax to a pre-tax price. To reverse it, divide your total by (1 + rate/100) to estimate the pre-tax price.
This calculator provides estimates for informational purposes only and should not be considered financial, tax, or legal advice.