Sales Tax Calculator
Quickly calculate the sales tax and total price for any purchase. Works for any state or city tax rate. Also works in reverse — find the pre-tax price from a total.
Part of our Math & Percentage Calculators collection.
Sales Tax Calculator
Free online calculator
$
%
US average is ~8.5%. Check your state/city rate.
Results update automatically as you type
How to Use This Calculator
- 1
Choose whether you want to add tax or remove it from a total.
- 2
Enter the price or total amount.
- 3
Enter your local sales tax rate (check your state's rate online).
- 4
See the tax amount and final total instantly.
Sales Tax Formulas
Add tax: Total = Price × (1 + tax rate / 100) Remove tax: Pre-tax Price = Total / (1 + tax rate / 100) Tax Amount = Total − Pre-tax Price
Example Calculation
Example: $100 item with 8.5% sales tax
Inputs
calcMode: addamount: 100taxRate: 8.5
Result
Tax: $8.50 | Total: $108.50
$100 × 1.085 = $108.50 total. The $8.50 is the sales tax portion.
Frequently Asked Questions
Which states have no sales tax?
Oregon, Montana, New Hampshire, Delaware, and Alaska have no statewide sales tax (though Alaska allows local sales taxes). Every other US state has a sales tax ranging from 2.9% (Colorado) to 7.25% (California).
How do I find my local sales tax rate?
Your rate combines state + county + city taxes. Search 'sales tax rate [your city, state]' or check your state's department of revenue website. Sales tax rates vary even within cities.