Accounting Software for Quebec Accounting Firms

Do Quebec firms file with both the CRA and Revenu Québec?

Yes. Every Quebec engagement carries two filing relationships rather than one. Quebec corporations file the federal T2 with the CRA and the CO-17 corporate return with Revenu Québec. Quebec residents file two personal returns: the federal T1 with the CRA and the TP-1 with Revenu Québec. Quebec is the only province where individuals file separately with both administrations.

Revenu Québec administers both the GST/HST and the QST in Quebec under an agreement with the federal government — the only province where the provincial revenue agency collects the federal tax. So a Quebec registrant's sales-tax correspondence goes to the provincial agency even for the federal tax — the reverse of every other province.

The practical failure mode is not forgetting a deadline. It is running two calendars, one federal and one provincial, that quietly disagree — and finding the disagreement at the deadline rather than before it. A Quebec client file needs both administrations' obligations on the same board, not in two systems that each look complete.

Client communication belongs to the same problem. Reminders, engagement letters and status notes frequently need to go out in French, on the firm's own letterhead, to a client who deals with two tax authorities and expects the firm to hold both.

What does a Quebec client book usually look like?

The mix follows the province's economy rather than its population. Across the 12 Quebec centres covered here, the sectors that recur most often are retail, construction, logistics, professional services and manufacturing.

Sector matters to a practice mainly through cadence. A retailer or a restaurant files sales tax monthly or quarterly and needs its books closed every month. A professional corporation may file sales tax annually and surface once a year with a year-end. A book weighted toward the first is a monthly treadmill; a book weighted toward the second is twelve separate year-end seasons wearing one name.

That is the practical argument for recording each client's obligations as data rather than as habit. The shape of the book decides where a firm's capacity goes, and the shape changes every time the book grows.

Who regulates accounting practice in Quebec?

Ordre des comptables professionnels agréés du Québec regulates the CPA designation and the practice of public accounting in Quebec.

Preparing a tax return for a fee is not, on its own, a restricted activity in most of Canada. Public accounting — assurance engagements, and use of the CPA designation — is regulated provincially, and the boundary between the two is where practices get into trouble. If you are building a compliance practice, confirm your own licensing position with Ordre des comptables professionnels agréés du Québec before you advertise a service.

The distinction matters most when a bookkeeping practice starts accepting year-end work. The software does not change. The professional obligations do.

How large is the Quebec market for accounting services?

Quebec had 228,622 small employer businesses as of December 2024, out of 233,235 employer businesses in total.

Nearly all of them are compliance clients rather than advisory clients: a T2 each year, a sales-tax cadence, payroll if they employ anyone, and a personal return for the owner. That is a recurring-obligations market, which is why practice capacity is measured in files rather than in hours.

It is worth being clear about what that figure is and is not. It describes the shape of the Quebec market; it is not a promise of demand. The binding constraint on a growing Quebec practice is almost always capacity, not prospects.

What sales tax do Quebec businesses charge?

Quebec businesses charge GST + QST at 14.975% — 5% federal GST plus 9.975% provincial. Revenu Québec administers both the GST/HST and the QST in Quebec under an agreement with the federal government — the only province where the provincial revenue agency collects the federal tax.

Quebec registrants report GST and QST together to Revenu Québec, not to the CRA.

Registration itself is a federal test. A business must register for the GST/HST once its taxable revenues exceed $30,000 in a single calendar quarter or over four consecutive calendar quarters. Below that, a small supplier may still register voluntarily in order to claim input tax credits — which is usually the right call for a client carrying real input costs.

How is corporate income tax handled in Quebec?

Quebec corporations file the federal T2 with the CRA and the CO-17 corporate return with Revenu Québec.

Quebec's provincial small-business rate is 3.2% on the first $500,000 of active business income, with a provincial general rate of 11.5%. The federal rates sit alongside them: 9% on the first $500,000 of active business income under the small business deduction, and 15% above it.

Quebec's small-business rate falls from 3.2% to 2.2% for taxation years beginning after April 29, 2026. A tax year straddling that date needs the change applied before the return is prepared, so those files are worth flagging at the year-end rather than at filing.

Every resident corporation files a T2 for every tax year, including a year with no tax payable and no activity. A dormant Quebec holding company is still an annual filing, and dormant files are the ones that fall off a manual list first.

Why do corporate deadlines never cluster in Quebec?

Because a Canadian corporation chooses its own fiscal year-end, and both of its deadlines are measured from that date rather than from a calendar. The T2 return is due six months after the year-end. The balance of tax is due earlier — generally two months after year-end, or three months for an eligible Canadian-controlled private corporation claiming the small business deduction.

Two clocks per corporate client, running from a date that differs client to client, is what turns corporate work into a twelve-month season instead of a spring one. A Quebec firm holding thirty corporations with year-ends spread across the calendar has a return due in most months of the year and a payment due in most of the others — and the payment date is the one no software reminds anyone about, because it arrives while the file still looks months away.

Instalments are a third clock. A corporation above the relevant threshold pays through the year rather than settling at the balance date, which means the file needs attention between the year-end and the return rather than only at either end of it.

Which CRA deadlines matter most to Quebec firms?

A Quebec registrant reports GST and QST together to Revenu Québec rather than to the CRA, on the reporting frequency assigned to it. The rest of the calendar is federal and identical everywhere in Canada: T1s by April 30 — June 15 where there is self-employment income, with the balance still due April 30 — T2s six months after each corporation's year-end, T4 and T5 slips by the last day of February, and payroll remittances on the schedule the CRA assigns each employer.

On top of the federal dates below, a Quebec corporation also files the CO-17. That second return is the one most likely to be missed, because nothing in a CRA-shaped calendar produces it.

Where a deadline falls on a weekend or public holiday, the CRA treats the next business day as filed on time. That is the one piece of slack in the whole calendar, and it is not worth planning around.

How does SpidNums fit a Quebec practice?

A six-person Montreal practice models every corporate client as three obligations rather than one: the federal T2, the Quebec CO-17, and a combined GST/QST return filed with Revenu Québec. Personal clients carry two returns, T1 and TP-1. The failure mode is not forgetting a deadline — it is maintaining two calendars that quietly disagree, so the practice keeps both administrations' dates on a single board and sends client correspondence in the client's language on the firm's own letterhead.

SpidNums models that as data rather than as reminders somebody has to remember to set. Each client carries typed services — GST + QST on the reporting frequency the client was actually assigned, the T2 on that client's own fiscal year-end, payroll on its remitter schedule — and each service generates its own work on its own cadence. Every resulting deadline ranks by proximity on one colour-coded board: red for overdue, orange for due soon, green for on track.

Engagement letters are built from the same services catalogue, priced from the services the client actually holds, and signed on a branded page with no login for the client. The firm's name is on the portal, the emails and the letterhead; SpidNums' name is not. Client data stays in Canada.

An honest limit: a practice filing fifty personal returns and nothing else does not need any of this. A spreadsheet holds fifty rows perfectly well, and the discipline of one person checking one list is hard to beat at that size. The case for a system starts where obligations recur on different cadences for different clients — in Quebec, roughly the point a firm takes on its first dozen corporate year-ends and finds that no two of them are due in the same month.

What does moving a Quebec practice onto SpidNums involve?

Three things, in this order: the client list, the services, and the letters. Clients arrive by CSV or XLSX import, so a spreadsheet that already holds names, contacts and fiscal year-ends is a migration rather than a re-keying exercise.

Services are where the deadlines come from. Each service is typed and carries a reporting frequency — GST + QST monthly, quarterly or annual; the T2 on the client's own fiscal year-end; payroll on the remitter schedule the CRA assigned that employer. Assigning a service to a client is the act that creates the recurring work and the reminders behind it, which is why the setup is worth doing carefully once.

Engagement letters come last and close the loop: built from the services the client actually holds, priced from those services, sent as a branded link the client signs without creating an account, and filed against the client record as a PDF.

What does not migrate is history that was never structured. A practice moving off paper should expect to key in fiscal year-ends and service cadences by hand — and to discover, while doing it, the two or three clients whose obligations nobody in the firm could actually name.