Choose a tax calculator by jurisdiction and task. Distinguish a fixed-rate arithmetic check from a progressive schedule you provide.
Add VAT to a net amount or remove VAT from a gross amount.
Check the relationship between net invoice value, VAT and gross total.
Add or remove the French reduced VAT rate of 5.5%.
Calculate Quebec GST and QST on a taxable amount, or extract them from a tax-inclusive total.
Calculate a Saint-Martin TGCA amount from a rate you have verified for the relevant activity and period.
Apply a progressive schedule that you enter yourself.
Apply a property transfer tax schedule you supply for the relevant Quebec municipality and year.
Editorial responsibility: Nicolas Belotti · Methods and testing · Report an error
English edition: 16 September 2026.