This GST calculator Canada helps split 5% GST from prices or add GST to exclusive amounts. Useful for freelancers and small businesses billing Canadian clients—HST provinces may need combined rates entered manually.

HST provinces combine federal and provincial tax—enter the combined rate when applicable.

How to use this tool

Select inclusive/exclusive, enter amount, use 5% for federal GST or enter combined HST rate for provincial billing.

Worked example

Example: $105 inclusive → $100 pre-tax + $5 GST at 5%.

When to use this

Canadian freelance invoices.
Quick receipt checks.
E-commerce checkout QA.

Common mistakes

Using 5% where HST applies (13–15%).
Forgetting zero-rated vs exempt goods.
Quoting USD prices with CAD GST.

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pst gst calculator
canada sales tax calculator

How it works

Enter an amount and GST rate, then choose whether the amount is tax-exclusive or tax-inclusive to calculate GST, pre-tax value, and total. Results are educational estimates.

Limitations

Results are estimates for educational purposes and are not tax advice. GST rules vary by jurisdiction.

Privacy and file handling

Your data stays on your device and is not uploaded.

Related GST Calculator guides

These pages use the same gst calculator with guides tailored to specific search intents.

GST Calculator — general payment estimate
GST Calculator India
GST Amount Calculator
GST Inclusive Price Calculator
GST Exclusive Calculator

FAQ

Frequently asked questions

HST provinces?

Enter combined HST percentage manually if billing in ON, NS, NB, NL, PE.

PST separate?

Some provinces bill PST separately—this tool handles one rate at a time.

Business number?

Calculator does not validate GST/HST registration—consult CRA rules.

Page last reviewed: July 5, 2026

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