Sales Tax / VAT / GST Calculator
Add or remove sales tax, VAT or GST from any price.
How to use the Sales Tax / VAT / GST Calculator
Switch between adding tax to a net price and extracting the tax already included in a gross price.
Formula
Gross = Net × (1 + rate) Net = Gross ÷ (1 + rate)
Worked example
$100 plus 13% HST is $113. A $113 receipt includes $13 of tax.
Frequently asked questions
How do I remove tax from a total?
Divide the total by 1 plus the tax rate. For 13% tax: $113 ÷ 1.13 = $100.
Results are estimates for educational and planning purposes. Always confirm important financial, health or legal decisions with a qualified professional. Last reviewed 2026-09-27.