A GST/HST calculator adds or removes Canadian sales tax for your province. Rates range from 5% (Alberta, GST only) to 15% (Atlantic HST provinces); Ontario is 13%. Enter an amount and province below. Updated June 2026.
How it works
To add tax: gross = amount × (1 + rate). To remove tax: net = amount ÷ (1 + rate), and the tax portion is the difference. HST provinces combine federal GST and provincial tax into one rate; GST-only provinces charge 5%; BC, MB, SK and QC add a separate provincial tax.