Money
Sales Tax Calculator
Enter an amount and a tax rate, and choose whether the amount is pre-tax or already includes tax. We give you the subtotal, the tax, and the total.
The amount before tax is added.
Combined state + local rate, in percent.
Total amount
$140.71
Subtotal $129.99 + tax $10.72
Examples
Add 8.25% to $129.99
= $140.71 (tax $10.72)
Remove 7% from $59.99 total
= $56.07 + $3.92 tax
Add 10.25% to $1,499
= $1,652.65 (tax $153.65)
How it works
Two simple operations: multiplying to add tax, or dividing to extract a tax-inclusive total back into its components.
Add tax · subtotal × (1 + rate ÷ 100) = total
Remove tax · total ÷ (1 + rate ÷ 100) = subtotal
Frequently asked questions
Use your jurisdiction's combined rate — state, county, and city. Total rates in the U.S. range from 0% (in the few states with no sales tax) to over 10% in some cities. Your receipt or your state's department of revenue will list the exact rate.
Adding tax starts from a pre-tax subtotal and computes the tax to be added. Removing tax starts from a tax-included total and works backward to find the original subtotal — useful when reconciling receipts or pricing items inclusive of tax.
Often no. Many states exempt groceries or apply lower rates, and prepared food, alcohol, and tobacco often have additional rates. This calculator applies a single flat rate.
Yes — the math is identical for any percentage-based consumption tax (VAT, GST, etc.). Use the appropriate rate for your locale.
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