Reverse VAT / Sales Tax Calculator

How to calculate remove sales tax

Divide the gross amount by one plus the rate divided by 100. A gross price of 120 at an entered 20% rate contains a net amount of 100.

Formula

gross ÷ (1 + rate ÷ 100); enter your applicable rate

Worked example

Gross amount

120

Tax rate (%)

20

Applying the formula to these values gives 100 .

What should I check?

Do not simply subtract 20% from a price that includes 20% tax: that would give a different answer. You must know the applicable rate.

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