Sales Tax Calculator - Add or Extract Sales Tax
Add sales tax to a price or extract tax from a tax-inclusive total.
Tool Interface
Sales Tax Calculator
Add sales tax to a price, or extract the tax from a tax-inclusive total.
How to use
Enter the price and the tax rate. Leave the box unchecked to add tax on top of the price, or check it if the price already includes tax and you want to see the tax portion. Press Calculate, Reset clears the form.
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About This Tool
Frequently Asked Questions (FAQ)
How do I calculate sales tax?
Enter the price and your tax rate. The calculator shows the tax amount and the total you will pay at checkout.
What does the includes tax option do?
If the price already includes tax, enable it to extract the tax portion — useful for backing out VAT or listed inclusive prices.
What tax rate should I use?
Use your combined local rate: state plus county plus city. Rates vary widely, so check your area current rate.
Can I use it for VAT?
Yes. Enter the VAT rate and use the includes-tax option when prices are quoted VAT-inclusive.
Is the sales tax calculator free?
Yes. It is free to use with no signup and no limits.