Provincial Tax
Quebec Sole Proprietorship Tax Explained
Quebec sole proprietorship tax covers one combined return, QPP contributions, GST/QST and Revenu Québec forms. Learn how self-employment tax works today.
Quebec sole proprietorship tax works differently from every other province: Revenu Québec administers both your federal and provincial personal income tax on a single combined return, so a self-employed owner in Quebec deals with one tax authority for personal income instead of two. You still report business income on the federal T2125 form, but you also complete Revenu Québec's own business-income schedule, and you contribute to the Quebec Pension Plan (QPP) rather than CPP. Here is how the pieces fit together today.
Who administers Quebec sole proprietorship tax
For individuals resident in Quebec, Revenu Québec collects the federal income tax on behalf of the Canada Revenue Agency under a long-standing federal-provincial arrangement. In practice, a sole proprietor files one personal income tax return with Revenu Québec rather than sending a separate return to the CRA.
A typical Quebec sole proprietor's filing package includes:
- The federal T1 return and its schedules, filed through Revenu Québec;
- The Quebec TP-1 return and schedules;
- Business or professional income reported on form T2125 and on Revenu Québec's business-income form (often referred to as TP-80 — confirm the current form number and version on revenuquebec.ca);
- GST and QST returns, if you are registered for those accounts.
The CRA still matters even for Quebec residents: it administers the Business Number (BN) program, payroll accounts and GST. If you hire employees, you register a payroll account with the CRA. Read more about how this structure is defined in our guide to what a sole proprietorship is.
How self-employment income is taxed in Quebec
Your business income is not taxed separately. It flows into your personal income and is taxed at your marginal rate, combining the federal brackets (with the Quebec abatement) and Quebec's provincial brackets. Because your net income drives every other contribution below, tracking it carefully matters.
| Item | What it means for a Quebec sole proprietor |
|---|---|
| Income tax | One combined return filed with Revenu Québec; federal and provincial tax calculated together. |
| Pension plan | QPP, not CPP. You pay both the employee and employer portions on net self-employment income. |
| Sales tax | GST plus QST; Revenu Québec administers both for Quebec businesses. |
| Workers' compensation | CNESST coverage is generally optional for a self-employed person without employees. |
| Parental benefits | You can register for the Quebec Parental Insurance Plan (QPIP) as a self-employed worker. |
Amounts, rates and thresholds change. Confirm the current figures on revenuquebec.ca and canada.ca before you estimate your bill.
QPP, QPIP and other Quebec contributions
Because Quebec runs its own pension plan, self-employed Quebecers do not pay into CPP on business income — they pay QPP instead, at the rate set for self-employed contributors. That rate is higher than an employee's rate because you cover both halves. If you also have employment income and a QPP-exempt amount, the calculation can get complicated; the schedules handle the exemption.
Other contributions to consider:
- QPIP: self-employed workers can opt in to parental insurance and generally must register before the claim period. Check the current rules with Revenu Québec.
- Health services fund: individuals carrying on a business in Quebec may owe a contribution. The rules depend on your situation — confirm with Revenu Québec or an accountant.
- CNESST: self-employed individuals without workers are usually not automatically covered and may be able to register voluntarily.
- EI: self-employed people are not automatically in the employment insurance system; any opt-in is handled through the CRA.
Deductions that reduce Quebec self-employment tax
Quebec self-employment tax is calculated on net income, so deductions matter. On form T2125 and the Quebec equivalent you can typically claim:
- Business operating expenses — supplies, software, advertising, professional fees;
- Business-use-of-home expenses, based on the portion of your home used for work;
- Motor vehicle expenses, based on kilometres driven for business;
- Capital cost allowance on equipment and furniture;
- QPP contributions and other deductions handled on your return.
Keep receipts and a mileage log for anything you claim. Revenu Québec and the CRA can both review your business income, and a deduction without support is easy to disallow.
GST and QST for Quebec sole proprietors
Quebec is the one province where the provincial sales tax is harmonized with GST and administered by Revenu Québec. If your revenue exceeds the small-supplier threshold, or if you register voluntarily, you must charge GST and QST, file returns and remit. Registration also lets you claim input tax credits on business purchases. Our guide to GST/HST in Quebec and QST walks through registration and filing. Confirm the current small-supplier threshold on Revenu Québec's website.
Filing deadlines, instalments and records
Quebec individuals with business income generally have more time to file than the date the balance is due, which means interest can accrue on an unpaid amount even when the return is filed on time. If you owe more than the instalment threshold in a year, Revenu Québec may ask for quarterly instalments. Keep records for the retention period Revenu Québec requires — confirm the current rule. Whether you must register with the Registraire des entreprises depends on your situation; see do I need to register a sole proprietorship.
Sole proprietorship or corporation in Quebec?
At some income level, the combined federal and Quebec tax bill, plus personal liability exposure, makes incorporation worth reviewing. A corporation pays its own tax and can leave more cash in the business, but it adds corporate returns, filing requirements and accounting costs. Our comparison of sole proprietorship vs corporation sets out the trade-offs. For many Quebec owners starting out, staying unincorporated is still simpler and cheaper.
Frequently asked questions
Do Quebec sole proprietors file a federal and a provincial tax return?
No. Quebec residents file one combined income tax return with Revenu Québec, which collects federal tax on behalf of the CRA. You still report business income on form T2125 and on Revenu Québec's business-income form, but both levels of tax are calculated together on that single return. Confirm the current forms and versions on revenuquebec.ca and canada.ca.
Do self-employed people in Quebec pay CPP or QPP?
Quebec has its own pension plan, so self-employed residents generally contribute to the Quebec Pension Plan (QPP) rather than CPP. As a self-employed contributor you pay both the employee and employer portions on net business income, which makes the effective rate higher than a salaried employee's. Confirm the current rate and any exemption with Revenu Québec.
How much tax does a sole proprietorship pay in Quebec?
There is no separate Quebec business tax for a sole proprietorship. Net business income is added to your personal income and taxed at your marginal rate, combining federal tax (with the Quebec abatement) and Quebec's provincial brackets. Because rates and brackets change, use the current numbers from Revenu Québec or the CRA, or ask an accountant to estimate your situation.
Do I need to charge GST and QST as a Quebec sole proprietor?
Only once your taxable revenue passes the small-supplier threshold, or if you register voluntarily. Revenu Québec administers both GST and QST for Quebec businesses, so registration and returns go through one account. Registration also allows input tax credits on business purchases. Confirm the current threshold on Revenu Québec's website before deciding.
When is the Quebec self-employment tax return due?
Filing and payment deadlines are different. Individuals with business income generally have more time to file than the date the balance is due, so interest can accrue even when the return is filed on time. Instalments may also be required if you owe above the threshold. Check the current dates on revenuquebec.ca and canada.ca each year.