Online Accountant for Ottawa-Gatineau Businesses
One accounting firm for both sides of the river
LeComptable.ca is an online accounting firm based in Montréal. Québec is our home province, and we also serve Ontario — so we handle both sets of rules for businesses and self-employed professionals in Ottawa, Gatineau and the National Capital Region. Bookkeeping, HST or GST/QST returns, payroll and corporate tax (T2 and CO-17) — all done remotely, at a fixed monthly price.
- Packages from $150/month — same price anywhere in Canada
- 25 years of experience with Québec, Ontario and federal tax
- 100% online: no office visit needed
- Service in English and French
Ontario and Québec rules we handle for you
Business in Gatineau (Québec) — GST 5% with the CRA plus QST 9.975% with Revenu Québec. Québec payroll: QPP, QPIP, Québec income tax, RL-1 slips and the Health Services Fund with Revenu Québec, plus CNESST. Corporations file the federal T2 and the Québec CO-17.
Business in Ottawa (Ontario) — HST 13% with the CRA. Ontario corporate tax is calculated on the T2 (Schedule 500). Payroll is remitted to the CRA; Employer Health Tax applies above $1 million of payroll; WSIB registration for most employers.
Selling across the river — place-of-supply rules decide whether you charge HST 13% or GST + QST. A Gatineau business billing an Ottawa client generally charges HST; an Ottawa business selling to customers in Québec charges GST and may have to register for the QST.
Living on one side, working on the other — your provincial income tax depends on where you live on December 31. If you live in Gatineau and work in Ottawa, Ontario tax is withheld from your pay, but you file a Québec return (TP-1) and part of the tax withheld can be transferred to Québec. If you live in Ottawa and work in Gatineau, Québec tax is withheld and you recover it by filing a Québec return.
Corporations with offices in both provinces — taxable income is allocated between Ontario and Québec, with a T2 for the CRA and a CO-17 for Revenu Québec.
Why Ottawa-Gatineau businesses choose LeComptable.ca
Everything online
Share your documents securely and meet us by phone or video. No office visit needed, whether you are in Ottawa or Gatineau.
Fixed monthly price
Packages from $150/month, the same price everywhere in Canada. No surprise hourly bills.
Québec and Ontario, one firm
Québec is our home province and we serve Ontario every day: no need for two accountants when your business, your clients or your staff are on both sides.
One team for everything
Bookkeeping, HST or GST/QST, payroll in both provinces, T2, CO-17 and personal tax: one firm follows your whole file, all year long.
25 years of experience
Founded in 2000, LeComptable.ca has been helping small businesses and self-employed professionals with their accounting and taxes for 25 years.
Our accounting services for Ottawa-Gatineau businesses
From monthly bookkeeping to year-end returns, we take care of all the accounting and tax obligations of your business in Ottawa, Gatineau or both, entirely online.
Bookkeeping
Accurate monthly bookkeeping and bank reconciliations, so you always know where your business stands.
T2, CO-17 and personal tax
Your T2 corporate return, your Québec CO-17 when it applies, and your personal returns (T1 with TP-1 or ON428).
HST and GST/QST returns
HST returns for Ontario, GST and QST returns for Québec, and the right tax on every invoice across the river.
Payroll in both provinces
Payroll for Ontario (CRA, T4, EHT) and Québec (Revenu Québec and CRA, T4 and RL-1, CNESST).
Tax planning
Salary or dividends, incorporation, expenses: we help you pay less tax legally, year after year.
Key deadlines on both sides
| Last day of February | T4 and RL-1 slips, T5 and RL-3 slips |
| March 15 | Ontario Employer Health Tax annual return |
| April 30 | Personal returns: T1 (federal) plus TP-1 (Québec residents) or ON428 (Ontario residents), and balance owing |
| June 15 | Personal returns for self-employed individuals (balance still due April 30) |
| 6 months after year-end | T2 and CO-17 corporate returns |
| 1 or 3 months after the period | HST return, or GST and QST returns |
Example: a Gatineau consulting firm with Ottawa clients
An incorporated consulting firm in Gatineau bills $200,000 a year to clients in Ottawa.
- Because its services are supplied in Ontario, it generally charges HST at 13% ($26,000) rather than GST + QST.
- As a Québec employer, it runs payroll with Revenu Québec and the CRA, issues T4 and RL-1 slips, and pays the Health Services Fund and CNESST.
- The corporation files a T2 with the CRA and a CO-17 with Revenu Québec; the owner, who lives in Gatineau, files a Québec TP-1.
What we do for this client: monthly bookkeeping, HST returns, Québec payroll, the T2 and CO-17 corporate returns and the owner’s personal returns.
Frequently asked questions: accountant for Ottawa-Gatineau
I live in Gatineau and work in Ottawa. Where do I pay income tax?
In Québec, because your province of residence on December 31 decides. Your Ontario employer withholds Ontario tax, but you file a Québec return (TP-1) and part of the tax withheld can be transferred to Québec. We prepare both your federal and Québec returns.
I live in Ottawa and work in Gatineau. What happens to the Québec tax withheld?
You pay income tax to Ontario as an Ontario resident. The Québec tax withheld by your employer is recovered by filing a Québec return.
My Gatineau business bills clients in Ottawa: HST or GST + QST?
It depends on the place of supply. Services supplied to clients in Ontario are generally subject to HST at 13%, even if your business is in Québec. We check each type of sale for you.
My Ottawa business sells to customers in Québec: do I charge QST?
You charge GST on sales to Québec customers, and depending on your situation you may have to register for and collect the QST. We assess it with you.
My corporation has offices in Ottawa and Gatineau: how many returns?
The corporation files a federal T2 (which includes the Ontario calculation) and a Québec CO-17, with its income allocated between the two provinces.
Can a Montréal firm handle both Ontario and Québec rules?
Yes. Québec is our home province and we serve Ontario businesses every day, which makes us a natural fit for the National Capital Region.
Do I need to meet you in person?
No. Everything is done online: secure document sharing, phone and video meetings.
How much does it cost?
At LeComptable.ca, packages start at $150 per month, the same price everywhere in Canada. The T2 corporate return is $500 + tax for package clients. See our pricing.
