Quebec runs more of its own tax and social programs than any other province, so a sole proprietor there deals with two tax administrations: the CRA for federal income tax and Revenu Québec for Quebec income tax, sales taxes and several payroll programs. This page sets out what is different for a sole proprietorship in Quebec: registration with the Registraire des entreprises, how GST and QST are handled, the Quebec tax return and contributions, the obligations that come with hiring employees, and the French-language rules. Figures are for 2026.
When registration is required: a sole proprietor who carries on business in Quebec under any name that does not include their own first and last name must register with the Registraire des entreprises du Québec.
Quebec enterprise number (NEQ): registration gives the business a ten-digit NEQ, which is used with Quebec government departments.
Annual updating declaration: registered enterprises must file an annual updating declaration to keep their information current, and pay the related fee.
Revenu Québec accounts: QST, source deductions and other Quebec accounts are opened with Revenu Québec, usually at the same time as the federal business number.
Two taxes: sales in Quebec are generally subject to the 5% GST and the 9.975% Quebec sales tax (QST), for a combined rate of 14.975%.
One administrator: for most businesses, Revenu Québec administers both GST and QST, so registration, returns and payments for both go to Revenu Québec rather than the CRA.
Small supplier threshold: the same $30,000 test applies to QST registration as to GST.
Input tax refunds: QST paid on business purchases is recovered as input tax refunds (ITRs), parallel to GST input tax credits, with some restrictions on items such as certain vehicles and fuel.
Quick Method: a Quick Method is also available for QST, with its own remittance rates.
Two returns: a Quebec resident files the federal T1 with the CRA and a separate Quebec return (TP-1) with Revenu Québec.
Business income: reported on Form TP-80 on the Quebec return, alongside Form T2125 on the federal return. The rules are similar but not identical.
Federal abatement: Quebec residents receive a 16.5% reduction in basic federal tax, because Quebec funds some programs itself.
Separate instalments: Quebec income tax instalments are paid to Revenu Québec, separately from federal instalments paid to the CRA.
Quebec Pension Plan (QPP): replaces CPP for Quebec residents. Contributions on self-employment income are calculated on the Quebec return at rates slightly higher than CPP, with the same second-tier (QPP2) structure.
Quebec Parental Insurance Plan (QPIP): self-employed people with at least $2,000 of self-employment income pay QPIP premiums and can receive maternity, paternity, parental and adoption benefits.
Health Services Fund: individuals pay a contribution to the Health Services Fund on business and other non-employment income above a threshold, calculated on the Quebec return.
Prescription drug insurance: residents not covered by a private plan pay a premium for the public prescription drug plan on their Quebec return.
Minimum wage: $16.60 an hour since May 1, 2026.
Source deductions: Quebec income tax, QPP and QPIP are withheld and remitted to Revenu Québec, while federal income tax and EI (at a reduced Quebec rate) go to the CRA.
Employer contributions: Health Services Fund contributions, the CNESST labour standards contribution and workplace health and safety premiums are payroll costs.
Training: employers whose total payroll exceeds $2 million must spend at least 1% of payroll on training or contribute the difference.
Year-end slips: Quebec RL-1 slips are issued alongside federal T4 slips by the end of February.
Labour standards and pay equity: the Act respecting labour standards sets minimum conditions; businesses with 10 or more employees have pay equity obligations.
Business name: must have a French version, although a trademark in another language may be used in some cases.
Signage and commercial documents: signs, product labels, invoices, receipts and contracts of adhesion must be available in French, with French at least as prominent as any other language on signs.
Francization: businesses with 25 or more employees must register with the Office québécois de la langue française and follow a francization process.
Two tax authorities: the CRA for federal income tax, Revenu Québec for Quebec tax, GST and QST.
14.975% combined sales tax: GST and QST registered and filed together with Revenu Québec.
QPP and QPIP: replace CPP and add parental insurance premiums for the self-employed.
French first: names, signs and commercial documents must meet the Charter of the French Language.
Revenu Québec: Starting a business; GST and QST; Form TP-80; source deductions and employer contributions.
Registraire des entreprises du Québec: registering a sole proprietorship; annual updating declaration.
Quebec: Charter of the French Language; Act respecting labour standards; minimum wage effective May 1, 2026.