Do I need to register for GST?
Enter your taxable sales for the last four calendar quarters. The checker applies both $30,000 tests and tells you where you stand.
How the two tests work
One quarter. If your taxable sales pass $30,000 in a single calendar quarter, you stop being a small supplier on the sale that took you over. GST applies to that sale.
Four quarters together. Sometimes the last four calendar quarters add up to more than $30,000. Then you stop being a small supplier at the end of the month after that quarter.
Either way, you have 29 days to register, and GST is owed from the effective date. Taxi and rideshare drivers must register from their first fare. If you own other businesses, their sales may count toward your total; ask us.
Rules checked against official sources on 2026-10-02. Sources: CRA: When to register for and start charging the GST/HST; CRA: Tax obligations for commercial ridesharing and delivery services.
Over the line, or close to it?
Send us your sales by quarter. We tell you whether registration is due, from what date, and what to charge. Help is available in English, Punjabi and Hindi.