GST/QST Filing for Startups in Quebec

Starting a business in Quebec? One of the first tax obligations you may encounter is registering for and filing GST (Goods and Services Tax) and QST (Quebec Sales Tax). Here's what you need to know to stay compliant and avoid surprises.

Do You Need to Register?

If your total taxable revenues (before expenses) exceed $30,000 over the last four consecutive calendar quarters, you are required to register for GST and QST. Even if you’re below that threshold, registering can help you recover input tax credits.

We strongly recommend registering as soon as possible, especially for small businesses. Even if you're not yet required to register, doing so allows you to claim back the GST and QST you pay on eligible business expenses and purchases. This can make a big difference in your early cash flow and profitability.

How to Register

• GST: Register through the CRA’s Business Registration Online.
• QST: Register via Revenu Québec’s portal or by calling them directly.

Filing Frequencies

Annual: For businesses with less than $1.5M in taxable sales.
Quarterly or Monthly: For businesses over that threshold.
You can choose a more frequent filing cycle voluntarily if it helps with cash flow.

Key Deadlines

• Annual filers: Return and payment are due three months after your fiscal year-end.
• Quarterly/monthly: Returns and payments are due one month after the end of the reporting period.

Tips for Startups

• Track all input taxes on business expenses to maximize credits.
• Use accounting software like QuickBooks to automate calculations.
• Don’t forget to file even if you have zero sales in a period.

Need help registering or filing your sales tax? Contact Fractional Accounting for expert guidance tailored to startups in Quebec.