Sales Tax Calculator

Add sales tax or VAT to a price, or extract the tax from a total.

Calculate Sales Tax and VAT

This sales tax calculator works out the tax on a purchase and the total price, or extracts the tax from a price that already includes it. Enter the amount and the tax rate, then choose whether the amount is before or after tax. The result updates instantly in your browser, with nothing uploaded.

Adding tax to a price

To add tax, the calculator multiplies the amount by the tax rate and adds it to the original price. This is the everyday case when you know a pre-tax price and want to know what you will actually pay at the register.

Removing tax from a total

Sometimes you have a final, tax-inclusive price and need the net amount and the tax portion, for example to record a business expense or reclaim VAT. Tick the option to treat the amount as tax-inclusive and the calculator divides out the tax to show the net price and the tax separately.

Sales tax versus VAT

Sales tax, common in the United States, is added once at the final point of sale and varies by state and city. VAT, used in much of the world, is applied at each stage of production but shown to shoppers as a tax-inclusive price. The math here works for both; just enter the rate that applies to you.

This tool is for quick estimates. Always check the exact rate for your location, as rates differ by jurisdiction and product type.

Frequently asked questions

How do I add sales tax to a price?

Enter the pre-tax amount and the tax rate. The calculator multiplies them to find the tax and adds it to give the total you pay.

How do I work out the tax in a total price?

Enter the tax-inclusive amount and tick the option that the amount already includes tax. The calculator divides out the tax to show the net price and the tax portion.

What is the difference between sales tax and VAT?

Sales tax is added once at the final sale and varies by location, while VAT is applied through the supply chain and shown as a tax-inclusive price. The calculation here works for both.

Are tax rates the same everywhere?

No. Rates vary by country, state, city and sometimes product type, so always confirm the rate that applies to your purchase.