Online Accountant for Ontario Small Businesses
An online accounting firm serving all of Ontario
LeComptable.ca is an online accounting firm based in Montréal that serves small businesses, self-employed professionals and corporations across Ontario. Bookkeeping, HST returns, payroll and corporate tax (T2) — all done remotely, at a fixed monthly price.
- Packages from $150/month — same price anywhere in Canada
- 25 years of experience with Canadian and provincial tax
- 100% online: no office visit needed
- Service in English and French
Ontario taxes we handle for you
HST — 13% (5% federal + 8% Ontario). You must register once your taxable sales exceed $30,000 over four consecutive calendar quarters. Returns are filed monthly, quarterly or annually with the CRA.
Corporate income tax — Ontario small business rate of 3.2% on the first $500,000 of active business income of a Canadian-controlled private corporation (about 12.2% combined with federal tax); general rate 11.5% (about 26.5% combined). Ontario tax is calculated on the federal T2 return (Schedule 500): one return, filed with the CRA.
Payroll — CPP, EI, federal and Ontario income tax are withheld and remitted together to the CRA. T4 slips are due by the last day of February.
Employer Health Tax (EHT) — payable only if your annual Ontario payroll exceeds the $1 million exemption (eligible employers). Rates from 0.98% to 1.95%; annual return due March 15.
WSIB — most Ontario employers must register with the WSIB within 10 days of hiring their first worker.
Annual return — Ontario corporations file their annual return through the Ontario Business Registry.
Why Ontario businesses choose LeComptable.ca
Everything online
Share your documents securely and meet us by phone or video. No office visit needed, wherever you are in Ontario.
Fixed monthly price
Packages from $150/month, the same price everywhere in Canada. No surprise hourly bills.
Ontario and Québec expertise
We know the tax rules of Ontario and Québec — ideal if you have clients, staff or a second office in both provinces.
One team for everything
Bookkeeping, HST, payroll, corporate 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 Ontario businesses
From monthly bookkeeping to year-end returns, we take care of all the accounting and tax obligations of your Ontario business, entirely online.
Bookkeeping
Accurate monthly bookkeeping and bank reconciliations, so you always know where your business stands.
Corporate and personal tax
Your T2 corporate return with Ontario Schedule 500, and your personal return (T1 and ON428).
HST returns
HST registration, monthly, quarterly or annual returns and input tax credits claimed correctly.
Payroll and EHT
Payroll, CRA source deduction remittances, T4 slips and the Employer Health Tax return when it applies.
Tax planning
Salary or dividends, incorporation, expenses: we help you pay less tax legally, year after year.
Key Ontario tax deadlines
| Last day of February | T4 and T5 slips |
| March 15 | Employer Health Tax annual return |
| April 30 | Personal tax return (T1 with Ontario form ON428) and balance owing |
| June 15 | Personal return for self-employed individuals (balance still due April 30) |
| 2 or 3 months after year-end | Corporate tax balance due |
| 6 months after year-end | T2 corporate tax return |
| 1 or 3 months after the period | HST return (monthly and quarterly filers: 1 month; annual filers: 3 months) |
Example: an IT consultant in Toronto
An incorporated IT consultant in Toronto bills $150,000 a year to Ontario clients.
- Sales are well above $30,000, so the corporation must be registered for HST and charge 13%: $19,500 of HST collected over the year.
- HST paid on business expenses (software, equipment, phone) is claimed back as input tax credits, and only the difference is remitted to the CRA.
- Profit is taxed at the small business rate, and we help choose the right mix of salary and dividends for the owner.
What we do for this client: monthly bookkeeping, quarterly HST returns, payroll and T4/T5 slips, the T2 corporate return and the owner’s personal return.
Cities we serve in Ontario
We work with businesses in Toronto, Ottawa, Mississauga, Brampton, Hamilton, London, Markham, Vaughan, Kitchener-Waterloo, Windsor, Oakville, Burlington and everywhere else in Ontario — entirely online. Same team, same service and same prices as for our Montréal clients.
Frequently asked questions: accountant for Ontario businesses
Can an accounting firm in Québec handle my Ontario business?
Yes. Ontario corporate and personal income tax, HST and payroll deductions are all filed with the CRA, on federal forms. We know the Ontario rules and work with Ontario clients entirely online.
Do I need to meet you in person?
No. Everything is done online: secure document sharing, phone and video meetings.
How much does an accountant cost for an Ontario small business?
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.
When do I need to register for HST in Ontario?
When your taxable sales exceed $30,000 over four consecutive calendar quarters. You can also register voluntarily before that to claim input tax credits.
What is the HST rate in Ontario?
13%: 5% federal GST plus 8% provincial. It is filed on a single return with the CRA.
Does my Ontario business have to pay the Employer Health Tax?
Only if your total annual Ontario payroll is above the $1 million exemption (for eligible employers). Below that, no EHT is payable.
What is the small business tax rate in Ontario?
For a Canadian-controlled private corporation, the Ontario rate is 3.2% on the first $500,000 of active business income, or about 12.2% combined with federal tax.
Do you also work with businesses in both Ontario and Québec?
Yes. We handle the tax rules of both provinces, which is useful for Ottawa-Gatineau businesses and companies with staff or clients on both sides.
