GST/HST Calculator CA
Add or remove consumption tax and see the net and gross amounts.
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How it works
Adding tax multiplies the net price by the rate and adds it on. Removing tax works backwards from a tax-inclusive price to find the original net amount.
Gross = Net × (1 + rate); Net = Gross ÷ (1 + rate)Frequently asked questions
How much is GST in Canada?
The federal GST is 5%. In HST provinces a single combined rate of 13% or 15% applies instead.
What is the difference between GST and HST?
GST is the 5% federal tax. HST is a single tax that combines the 5% GST with provincial tax in provinces that have harmonised them.
How do I add GST in Canada?
Multiply the price by 1.05 for the 5% GST. In HST provinces, multiply by 1.13 (Ontario) or 1.15 (Atlantic provinces).
Which provinces use HST?
Ontario (13%) and Nova Scotia, New Brunswick, Prince Edward Island and Newfoundland & Labrador (15%) use HST.
GST/HST Calculator (Canada)
Canada’s federal GST is 5%. Some provinces combine it with provincial tax into a single HST; others charge 5% GST plus a separate provincial sales tax (PST).
How much is GST in Canada?
The federal GST rate is 5%. To add it, multiply the price by 1.05; the GST is the net price × 0.05.
HST provinces
HST combines GST with provincial tax in Ontario (13%) and the Atlantic provinces — Nova Scotia, New Brunswick, Prince Edward Island and Newfoundland & Labrador (15%). To add HST, multiply by 1 plus that rate.
| Task | Calculation | On $100 |
|---|---|---|
| Add 5% GST | net × 1.05 | $105 |
| Add 13% HST (ON) | net × 1.13 | $113 |
| Remove 5% GST | total ÷ 1.05 | $105 → $100 |
General information only, not tax advice.
Results are estimates for general guidance in Canada and may not reflect the latest local rates, fees or rules. Check official sources before making decisions.