Sales Tax Calculator
Add sales tax to a price or work backward from a total to find the pre-tax amount and the tax paid. Enter any tax rate.
Total (with tax)
$107.00
Tax Amount
$7.00
Pre-tax Price
$100.00
Frequently Asked Questions
How do I calculate sales tax?
Multiply the pre-tax price by the sales tax rate expressed as a decimal. For example, $100 at 7% tax is $100 × 0.07 = $7.00 in tax, for a total of $107.00. Enter your price and local rate above and the calculator does this instantly.
How do I find the price before tax from a total?
Divide the total by (1 + rate/100). For example, a receipt showing $107.00 at 7% tax gives a pre-tax price of $107 ÷ 1.07 = $100.00. Use the 'Remove tax' mode above to reverse-calculate any total.
Is sales tax the same everywhere?
No — sales tax rates vary significantly by state, county, and even city. Some states have no sales tax at all, while combined state + local rates in other jurisdictions can exceed 10%. Always enter your local combined rate to get an accurate result.