Sales Tax Estimator
Estimate the sales tax and total on a purchase from any tax rate.
To estimate sales tax, multiply the pre-tax amount by the tax rate as a decimal, then add it back for the total. At a 7.25% rate, a $100 purchase carries $7.25 in tax, for a total of $107.25. Rates vary by state, county, and city, so use your local combined rate. Enter the amount and rate to see the tax and total.
These results are estimates for informational purposes only and are not financial, tax, or legal advice. Your actual figures from a lender or the IRS may differ. Consult a qualified professional before making decisions.
Total with tax
$107.25
- Amount (pre-tax)
- $100.00
- Sales tax (7.25%)
- $7.25
- Total
- $107.25
About the Sales Tax Estimator
Sales tax in the United States is added at checkout rather than built into the shelf price, which is why the total comes out higher than the sticker. To estimate it, multiply the pre-tax amount by the combined rate expressed as a decimal, then add the result back to the amount. The rate is the part that needs care. There is no national sales tax; each state sets its own, and counties and cities often add local rates on top, so two towns in the same state can ring up different totals. Use the combined rate for the exact place where the sale happens. A handful of states have no statewide sales tax at all. What gets taxed also varies, since groceries, prescriptions, and sometimes clothing are exempt or reduced in some states. When an item is discounted, tax is charged on the lower price, not the original. This tool gives a clean estimate; your receipt is the final word once the precise local rate and any exemptions are applied.
Frequently asked questions
How do I calculate sales tax?+
Multiply the pre-tax price by the tax rate written as a decimal. A 7% rate on $50 is 50 × 0.07 = $3.50, for a $53.50 total.
Why is the sales tax rate different where I live?+
States set their own rates, and counties and cities can add local rates on top. The combined rate depends on the exact location where the sale takes place.
Is sales tax charged before or after a discount?+
After. Sales tax applies to the discounted amount you actually pay, so a coupon or markdown also lowers the tax.
Are all items subject to sales tax?+
No. Many states exempt or reduce tax on groceries, prescription drugs, and sometimes clothing, and a few states have no statewide sales tax at all.