Finance calculator
Sales Tax Calculator
Estimate sales tax amount and total checkout price from a tax rate.
Quick answer
How do you calculate sales tax?
Multiply the price by the tax rate as a decimal, then add it. For $50 at 8% tax: 50 × 0.08 = $4 tax, for a total of $54.
Tax = price × rate/100 • Total = price + tax
⚡ Answer updates as you type · Enter = calculate · Esc = reset
The Sales Tax Calculator estimates tax amount and total checkout price from a price and tax rate.
About this Sales Tax Calculator
Add sales tax to a list price, or work backward from a total to find the pre-tax amount. Works for any state, county, or country sales-tax rate.
What you'll need
- • Pre-tax price
- • Sales tax rate (%)
How it works
- 1. Enter the pre-tax price.
- 2. Enter your local sales tax rate.
- 3. View the tax amount and total price.
Worked example
A $50 purchase with a 7.25% sales tax has $3.63 in tax for a $53.63 total.
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Sales Tax Calculator FAQ
What is the Sales Tax Calculator?
The Sales Tax Calculator is a free online tool that helps you estimate sales tax amount and total checkout price from a tax rate.
How do I use the Sales Tax Calculator?
Open the Sales Tax Calculator, enter the requested values, and review the instant estimate on the page.
Is the Sales Tax Calculator free?
Yes. The Sales Tax Calculator is free to use on Fast Online Calculator and does not require an account.
How do I find the pre-tax price from a total?
Divide the total by (1 + rate/100). A $107 total at 7% tax is $107 / 1.07 = $100 pre-tax.
Are sales tax rates the same everywhere?
No. US sales tax varies by state and city, and some items like groceries are exempt in many states.
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