Sales Tax Calculator

Quickly calculate sales tax for any price and tax rate, or work backwards from the total.

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Sales Tax Results

Pre-Tax Price$100.00
Sales Tax$8.50
Total Price$108.50

How to Use the Sales Tax Calculator

Enter the price and tax rate. Switch between "Add Tax" (calculate from pre-tax price) and "Reverse" (work out pre-tax price from total).

Formula

Tax = Price × Rate ÷ 100
Total = Price + Tax

Frequently Asked Questions

What is the average US sales tax?

Combined state and local sales tax averages about 7.1% across the US. States like Oregon and Montana have 0% sales tax.

Is sales tax charged on services?

Usually not, but it varies by state. Most states tax tangible goods; services are often exempt but rules differ widely.