How to register for taxes (GST and QST) for your business?
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How to register for taxes (GST and QST) for your business?

16/7/2026

Why register for GST and QST?

For many entrepreneurs, registering for GST and QST brings up a few questions, big or small.

Who needs to register for GST and QST?

Everyone who runs a business that earns money needs to register for GST and QST with Revenu Québec. There are some situations where you absolutely have to do this administrative step. This applies to businesses considered 'small suppliers':

  • If your total taxable supplies and services exceed $30,000 in a calendar quarter or for all four preceding quarters;
  • If you offer a taxi or limousine service;
  • If you charge admission for public events held in Quebec (even if you don't live there).

However, if you do any of the following activities in Quebec, you *must* register for QST and collect the tax, no matter how much you sell (even if your total sales are under $30,000):

  • Selling tobacco products,
  • Selling fuel,
  • Selling alcoholic beverages,
  • Selling or leasing road vehicles for more than 12 months,
  • Selling or leasing new tires.

When do you need to register for GST and QST?

The deadline to register is different depending on whether you're signing up for GST or QST.

  • Registering for QST: For QST, your business needs to register before you provide your first taxable service in Quebec. In this case, you also need to collect this tax as soon as you register, or as soon as you were supposed to register.
  • Registering for VAT: For VAT, the company must apply before the 30th day following the day it invoiced its first taxable service. Canada . The collection of VAT is applicable from the date of registration or at the time it was supposed to be registered.

What info do you need to provide when registering?

To register for GST and QST with Revenu Québec, you'll need to provide this information and these documents:

  • Social Insurance Number (SIN);
  • Quebec Enterprise Number from the Registraire des entreprises (if applicable);
  • Revenue Agency Business Number Canada (if applicable);
  • Business trade name (if applicable);
  • Main business activity and secondary activities (if applicable);
  • When the business started;
  • Total taxable sales that the company plans to make at Canada in the next 12 months;
  • Your home address and phone number;
  • Your business address and phone number;
  • Your mailing address.

You can also apply for someone else, even without a prior power of attorney.

Besides the info and documents listed above, you'll also need to provide the following personal details:

  • First and last name;
  • Date of birth;
  • The last three digits of your social insurance number.

How do I register?

You can sign up in a few different ways. Each has its pros and cons, so we'll let you choose from these options:

  • By phone, at 514 873-4692 for Montreal, 418 659-4692 for Quebec City, or 1 800 567-4692 (toll-free),
  • Online, on the Revenu Québec website,
  • By mail, by filling out the form and sending it to "Direction principale des relations avec la clientèle des entreprises de Revenu Québec, C. P. 3000, succursale Place-Desjardins, Montréal (Québec) H5B 1A4" for the Montreal, Laval, Laurentides, Lanaudière, and Montérégie regions, or to "Direction principale des relations avec la clientèle des entreprises, Revenu Québec, 3800 rue de Marly, Québec, G1X4A5" for Quebec City and other regions,

How to find an expert to help you with tax registration?

Bankeo is a platform that connects you with accountants who can help you through this process.

So, feel free to reach out if you want to find an accountant who really gets your entrepreneurial journey and can help you through it. https://www.bankeo.ca/

Note

General information provided for guidance purposes only, reflecting the current 2026 tax regulations. It does not replace the advice of an accountant or chartered accountant: always consult a professional for your specific situation.

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