Sales Tax Calculator
Calculate sales tax on any purchase. Add tax to a pre-tax price, or work backward to find the tax included in a total. Works with any sales tax rate.
Sales Tax Calculator
tax calculator
How It Works
Formula
Tax = Price × (Rate ÷ 100) Total = Price + Tax Reverse: Net = Total ÷ (1 + Rate)
Examples
$100 at 7.5% tax
$100 purchase with 7.5% sales tax totals $107.50.
Frequently Asked Questions
How do I calculate sales tax?
Multiply the price by the tax rate (as a decimal). For example, $100 at 7.5% tax = $100 × 0.075 = $7.50 tax, for a total of $107.50.
How do I remove sales tax from a total?
Divide the total by (1 + tax rate). For example, $107.50 ÷ 1.075 = $100 pre-tax price, meaning $7.50 was tax.
What is the average US sales tax rate?
Combined state and local sales tax averages around 7-8% in the US, but ranges from 0% (Oregon, Delaware, Montana) to over 10% in some cities.
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