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Sales Tax and VAT Calculator

Free sales tax and VAT calculator. Add tax to a net price or extract it from a tax-inclusive total.

How the sales tax and vat calculator works

Choose whether your amount is before tax or already includes tax, enter the rate, and get the net amount, tax and total.

Formula

Tax added: tax = net × rate. Tax included: net = gross ÷ (1 + rate), tax = gross − net.

Worked example

Example: 120 including 20% VAT → net = 120 ÷ 1.2 = 100, VAT = 20.

FAQ

What is the difference between sales tax and VAT?

Sales tax is charged once at the final sale. VAT is charged at each stage of the supply chain, with businesses reclaiming the VAT they paid. For an invoice, both are shown as a percentage added to the net price.

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For information only – not financial, tax or legal advice. See our disclaimer.

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