Updated Checked by the Tax-Services.ca editorial team How we check
When the CRA talks about a certified tax preparer, it means someone approved to file returns electronically through its EFILE service, and you can look them up in the CRA’s directory. That’s the one certification you can check yourself, so start there.
What does certified mean for a tax preparer?
Anyone who prepares returns for pay can apply for EFILE, but they have to pass a suitability screening first. The CRA turns people down if they’ve been convicted of tax fraud, have outstanding tax debts, or skipped filing or paying in the past. It also refuses applicants it has rejected or suspended before.
Since January 1, 2024, a preparer who takes payment to prepare more than 5 returns a year has to file them electronically. The penalty for sending a personal return on paper is $25 each. So most paid preparers you’ll meet are already on EFILE, and one who isn’t deserves a question.
Notice what certification doesn’t tell you. It says nothing about skill. The CRA doesn’t grade how well someone understands rental income or a foreign pension.
What should you check before you hire one?
Check the directory, then check the person.
| Check | What good looks like |
|---|---|
| CRA directory | The preparer is listed as certified for EFILE |
| Form T183 | You get it to review and sign before anything is sent |
| Your copy | You leave with a full copy of the return |
| Blank forms | You never sign one |
| Fee | Fixed and stated up front, not a share of your refund |
| Records | You keep your slips, receipts and T183 for at least 6 years |
The CRA lists two more warning signs. One is a promise of an unusually large refund. The other is a preparer who tells you not to get a second opinion or not to call the CRA. Either one should end the conversation, even if the rest of the pitch sounded reasonable and the person was friendly, quick and cheaper than everyone else you called.
On the T183 itself, the CRA’s page on using a professional tax preparer says the information on it must be the same as the information in your electronic return. So compare the two before you sign Part F.
Is a percentage of your refund ever a fair fee?
The CRA describes schemes where a portion of the expected refund is the promoter’s fee, and treats it as a warning sign. A discounter is a related product. They work out your expected refund, hand you one payment now and file the return afterwards.
We can’t tell you what a fair fee is, because the CRA doesn’t publish one and we couldn’t find a source we’d trust. What we can say is to ask for the price in dollars before you hand over a single slip.
How can you sanity check the number you’re given?
Do a rough estimate yourself first. Take an Ontario employee earning $52,000 with $7,000 of tax withheld. The tax refund calculator shows a refund of $374.57.
Now add a $3,000 deduction, say an RRSP contribution. The refund goes to $967.32, a gain of $592.75. That’s what a real $3,000 deduction is worth at this income.
So if a preparer promises a refund far above what your slips and receipts can explain, ask which deductions and credits they used and where the paper is. Say a stranger at a kiosk tells you your refund will be $4,000 before looking at a single slip. At this income, a number like that should make you stop and ask what’s behind it. You’re the one who signs, and the CRA says you remain responsible for what’s on the return, whoever typed it. For a wider check on your tax bill, run the income tax calculator. If you work for yourself, the self-employed tax calculator shows what a business return should roughly produce.
Is a certified tax preparer the same as an accountant?
No. Don’t assume a professional title and CRA certification are the same thing. A preparer can hold one without the other. If someone says they’re an accountant, ask which professional body they belong to and check with that body. We haven’t researched those bodies, so we won’t describe their rules here.
What if something looks wrong after it’s filed?
Call the preparer first and ask them to explain the line in question. If a mistake is real, the return can be corrected, and it’s better to do that quickly than to wait for the CRA’s notice of assessment to arrive and make the problem official. Keep your copy of the return and the T183 handy for that call, along with the slips you gave them. If the preparer won’t answer, that tells you something about the next time too.
Mistakes and limits
Ghost preparers are the main trap. The CRA warns about preparers who raise the refund after you’ve signed and have it paid to themselves. It’s another reason to read the return before you sign it.
One last limit: our calculators use standard credits and deductions. Plenty of real returns have more going on, so a gap isn’t proof of a mistake. It’s a reason to ask.
The sources behind this page
The EFILE screening rules, the mandatory e-filing threshold and its penalty, the T183 steps and the warning signs come from Canada Revenue Agency pages we read in September 2026. The refund figures come from the calculator on this site. This is an independent site and endorses no preparer.
Frequently asked questions
What is a certified tax preparer in Canada?
In CRA terms it's a preparer approved to file returns through EFILE, listed in the CRA's directory of certified preparers.
Does certification prove a preparer is skilled?
No. It shows they passed the CRA's suitability screening and can file electronically. It doesn't test tax knowledge.
Do I have to sign anything before my return is filed?
You should review the electronic return and Form T183, which needs your signature, before it goes to the CRA.
Is a fee based on my refund a red flag?
The CRA treats a fee taken as a portion of the expected refund as an indicator of a tax scheme.
Who is responsible if the preparer makes a mistake?
You stay responsible for the information on your return, so read it and keep your records for at least 6 years.
- 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