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A taxation accountant is an accountant who spends most of the working week on tax: personal and corporate returns, planning, and letters from the CRA. You don’t need one for a plain T4 return, but a company with $300,000 of profit in Ontario owes $35,088 of corporate tax for a calendar 2026 year, and that’s when the specialist matters.
What does a taxation accountant do all day?
Mostly the same tasks, done faster and with fewer mistakes than you’d make once a year. Filing the T1 or T2 return. Working out instalments. Tracking GST/HST and payroll remittances. Deciding how the owner of a company gets paid.
The title isn’t a licence. In Canada the usual credential is the CPA, which CPA Canada says takes formal education, at least 30 months of supervised experience and the Common Final Examination. Whether someone works on tax every day is something to ask, and the letters won’t tell you.
When does the owner of a business need one?
Earlier than most think. A sole proprietor at $100,000 of net income pays $28,338 of income tax and CPP in Ontario, according to the self-employed tax calculator. That includes $9,293 of CPP, both halves.
Put the same profit in an Ontario company and the corporate tax calculator shows $11,696 of tax, leaving $88,304. Pay that out as a non-eligible dividend to an owner with no other income and the dividend tax calculator adds $9,684. Total $21,380, against $28,338.
Don’t read that as a saving you can bank. The corporation route skips CPP, so you build no pension credit, and it costs money to run. Making the choice honestly needs your own numbers and a plan for the cash, which is the accountant’s job.
Situations where a specialist earns their place
| Situation | What to look at |
|---|---|
| You own a corporation | T2 return, salary and dividend mix |
| You employ people | Payroll remittances, see the payroll remittance calculator |
| You own shares in a non-resident company | The CRA’s foreign affiliate rules and Form T1134 |
| You got a CRA letter | Whether to answer yourself or authorize a representative |
The foreign affiliate item surprises people. The CRA describes a foreign affiliate as a non-resident corporation where you hold at least 1% of the shares yourself and, with related persons, 10% or more. Reporting on Form T1134 can then apply. Only your own facts can say if it applies to you.
How to pick a taxation accountant without a directory
Ask three things. Which returns like mine did you file last year? What will it cost, in writing? Will you send me the return and Form T183 before it’s filed? The CRA says to review both, and to keep the documents for at least 6 years.
We couldn’t confirm what accountants charge, so we won’t quote a range. Ask for a flat price by return type.
If you want the accountant to talk to the CRA for you, you can authorize a representative through Represent a Client. The CRA offers different access levels for individuals and for businesses, so choose the narrowest level that covers the work.
Mistakes and limits
The numbers above are a snapshot. Ontario cut its small business rate on 1 July 2026, so the 11.7% combined figure is a blend for a calendar-year company. We’d expect about 11.2% from 2027, but that’s our own working and not a published number.
The corporate calculator has boxes for associated companies that share one limit and for passive investment income, but it ignores large taxable capital. All three can raise the tax. The self-employed calculator doesn’t cover EI or GST/HST, and it doesn’t reduce CPP when you enter deductions, so ask your accountant to check that part.
Also, an accountant can’t fix a shoebox. Records kept through the year are what they’ll turn into savings.
Where do these numbers come from?
Tax rates come from the CRA’s corporation tax rates page and 2026 federal and Ontario data, rechecked on 29 September 2026. Credential facts come from CPA Canada, and preparer rules and the foreign affiliate definition from CRA pages. This site has no connection with the CRA or any other government body.
Frequently asked questions
What does a taxation accountant do?
They prepare and file personal and corporate returns, plan your tax, track remittances and can deal with the CRA for you once you authorize them.
Is a taxation accountant the same as a CPA?
Not necessarily. The title isn't a licence. The CPA is the usual credential and it takes education, 30 months of experience and the Common Final Examination.
When should a small business owner hire one?
Once you own a company, employ people or earn self-employment income where a mistake costs real money. On $100,000 of net income the tax and CPP bill is $28,338 in Ontario.
How much does a taxation accountant cost?
We couldn't confirm typical fees. Ask for a flat price by return type in writing.
Can an accountant deal with the CRA for me?
Yes, if you authorize them through Represent a Client. The CRA offers different access levels, so choose the narrowest that covers the work.
- How to choose a tax preparer in Canada
How to decide if you need a tax preparer, what a preparer does, the questions to ask before you hire one and where to find free help in Canada
Information only. This page is general information, not tax, legal or accounting advice. Tax-Services.ca is an independent publisher: we don't prepare or file tax returns or offer tax services, and we have no connection with the CRA, Revenu Québec, any government or any company named on this page. Check the figures that matter with an official source or a qualified professional.