Sales Tax Calculator
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Formula: Tax = Price × Rate/100; Total = Price + Tax
Sales Tax Calculator
Sales tax is added to the purchase price of goods and services. Rates vary by state and locality in the US.
Conversion Formula
Tax = Price × Rate/100; Total = Price + Tax
Tax Amount = Price × (Rate ÷ 100). Total = Price + Tax Amount.
Step-by-Step Examples
$99.99, 8.25% = $8.25 tax, $108.24 total
99.99 × 0.0825 = 8.25
Frequently Asked Questions
How do I calculate sales tax?
Multiply the price by the tax rate (as a decimal). For example, $100 at 8% tax = $100 × 0.08 = $8 tax.
What is the average US sales tax?
Combined state and local sales tax averages about 7.12% across the US. Five states have no sales tax: OR, MT, NH, DE, AK.
How do I calculate the pre-tax price?
Divide the total by (1 + tax rate as decimal). Example: $108 total at 8% tax → $108 / 1.08 = $100 pre-tax.