Sales Tax Calculator
Calculate sales tax and total price for any purchase amount and tax rate.
Sales tax
$8.00
Total price
$108.00
How to use
- Enter the price before tax.
- Enter the sales tax rate or tap a state preset.
- See the tax amount and total price including tax.
Formula
Tax amount = Price × (Tax rate ÷ 100).
Total price = Price + Tax amount.
Example
A $100 item with 8% sales tax:
Tax = $8.00; Total price = $108.00.
Frequently asked questions
How do I calculate sales tax on a purchase?
Multiply the pre-tax price by the tax rate divided by 100. Add that to the original price for the total.
What is the sales tax in California?
The base state rate is 7.25%, but local taxes can push the total to 10%+ depending on the city and county.
How do I find the pre-tax price from a total?
Divide the total by (1 + tax rate/100). For example, $108 with 8% tax: $108 ÷ 1.08 = $100 pre-tax.
Is sales tax the same in every state?
No. Five states have no statewide sales tax (AK, DE, MT, NH, OR). Rates vary widely in the other 45 states plus local additions.
Can I use this for online shopping tax?
Yes, as an estimate. Actual tax depends on your shipping address and applicable state/local rules.