Quick Answer
How do you calculate sales tax?
// Answer
To add tax, multiply the price by the rate and divide by 100, then add it: total = price × (1 + rate÷100). To remove tax from a gross price, divide by (1 + rate÷100). An item priced 100 at 8.25% becomes 108.25.
Why use this tool
For shoppers and sellers
Whether you are pricing a product, checking a receipt, or backing out VAT for an invoice, this tool handles both directions — adding tax to a net price and extracting tax from a gross total — instantly and privately.
FAQ
Frequently asked questions
Multiply the price by the tax rate, divide by 100, and add it to the original price.
Divide the gross total by 1 plus the rate as a decimal. For 8.25%, divide by 1.0825.
Sales tax is added at the final point of sale (common in the US); VAT is collected in stages along the supply chain but is meant to fall on the final buyer, and over 170 countries use one. The math for adding or removing it is the same.
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