Sales Tax Calculator
Calculate sales tax and total price from a purchase amount and tax rate. Sales tax rules vary by location and sometimes by product category; use this tool for quick estimates.
Inputs
$
%
Results
Sales tax$8.25
Total after tax$108.25
How to use it
- Enter the purchase amount.
- Enter the sales tax rate (combined state + local if applicable).
- Review the tax amount and total after tax.
- Optionally use the reverse calculation to estimate the pre-tax amount from a total.
Key formulas
- Sales tax
- Tax = amount × (rate/100)
- Total after tax
- Total = amount + tax
FAQ
Use the combined rate that applies at the point of sale (state + local). If you don’t know it, you can use a best-guess rate for a rough estimate.
Not always. Some locations exempt or reduce tax on groceries, clothing, or services. Confirm the rule for your purchase category.
It’s the total tax rate applied to your purchase after combining state/local components. Some receipts show the combined rate directly.
Yes. If you know the total and tax rate, you can reverse it: pre-tax = total / (1 + rate/100).
Receipts can include item-level rounding, fees, and category-specific rates. Treat this as an estimate.
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Disclaimer
Estimates only. Tax rates and taxable categories vary by jurisdiction. Confirm totals using official rates and receipt rules.