In most cases, a small supplier is not required to register to collect GST/HST. There are exceptions - see below.
A small supplier is a supplier whose worldwide annual GST/HST taxable supplies, including zero-rated supplies and including the supplies (sales) of all associates, are less than $30,000, or less than $50,000 for public service bodies (colleges, non-profit organizations, charities, hospitals). The calculation of taxable supplies is not just done on a calendar year basis. At the end of each calendar quarter (March 31, June 30, September 30, and December 31), total taxable supplies for the past 4 consecutive quarters (i.e., for the past 12 months) should be totalled. If this total exceeds $30,000, the business must register to start collecting GST. Note that the taxable supplies will include sales as well as expenses incurred on behalf of the customer and rebilled to the customer.
There is also a $250,000 gross revenue (not taxable supplies) threshold for charities and public institutions. See CRA's When to register for and start charging the GST/HST, which includes information for most businesses, charities and public institutions, public service bodies, non-residents, and taxi operators or commercial ride-sharing drivers.
Here is an example of a small supplier's quarterly sales, showing when the small supplier is no longer a small supplier, and must register to collect GST or HST. This supplier started business in January 2025.
| Quarter | Quarterly Sales |
| Jan-Mar 2025 | $3,500 |
| Apr-Jun 2025 | 15,000 |
| Jul-Sep 2025 | 31,000 |
In the above example, the sale that caused the supplier to exceed the $30,000 limit occurred on Jul 22, 2025, and the limit was exceeded all in one quarter, so:
This next example shows a slightly different situation.
| Quarter | Sales | Annual Sales |
| Jan-Mar 2024 | $3,500 | |
| Apr-Jun 2024 | 6,500 | |
| Jul-Sep 2024 | 7,000 | |
| Oct-Dec 2024 | 8,000 | $25,000 |
| Jan-Mar 2025 | 8,000 | 29,500 |
| Apr-Jun 2025 | 9,000 | 32,000 |
In the above example, the sale that caused the supplier to exceed the $30,000 limit occurred on Jun 22, 2025, and the limit was exceeded over 4 quarters, not in a single quarter as in the first example, so:
Tax Tip: Always keep track of your annual sales so you can predict when you will have to register.
A small supplier must register to collect GST or HST if they carry on a taxi business, according to s. 240(1.1) of the Excise Tax Act of Canada. This would also include Uber taxi drivers. The same is true of QST in Quebec. Also, according to s. 240 (2), any person "who enters Canada for the purpose of making taxable supplies of admissions in respect of a place of amusement, a seminar, an activity or an event is required to be registered" to collect GST.
The 2017 Federal Budget amended the definition of a taxi business to require providers of ride-sharing services to register for the GST/HST and charge tax on their fares in the same manner as taxi operators. This was effective as of July 1, 2017.
A small supplier can choose to voluntarily register to collect GST/HST, in order to recover the GST/HST they have paid, by claiming input tax credits. See our information on voluntary registrations.
Small Supplier Threshold Calculation
RC4022 General Information for GST/HST Registrants - Small Supplier