Every tax season, the thing most people fear is receiving a review letter from the CRA (Canada Revenue Agency).
Most Canadians file their taxes without any issues. But if you accidentally step into a few “invisible traps,” your return may get flagged for review—even if you didn’t do anything wrong.
This guide walks you through the most common red flags, so you can avoid unnecessary trouble and file with confidence.
- 1. Don’t Rush to File Too Early
Many people rush to file as soon as possible because they’re eager to get their refund. But be careful: tax slips such as T3 and T5 (investment income) are often issued later.
If you file before receiving all your slips, the information you submit may not match what CRA receives later. When CRA’s system detects a mismatch, it can trigger a review.
Best practice: Wait until all your slips are available before filing. Filing a few days later can save you a lot of stress later.
- 2. Inconsistent Personal Information Is a Common Trigger
CRA doesn’t just look at numbers — they build a profile of you as a taxpayer.
- Did you change your address but forget to report the sale of your property?
• Did your marital status change but you didn’t update it?
• Did your charitable donations suddenly increase compared to prior years?
Even if everything is legitimate, inconsistencies or numbers that differ significantly from typical taxpayer profiles (e.g., large donations with modest income) may trigger a request for supporting documentation.
- 3. Common Deduction Areas That Often Lead to Trouble
Self-claimed deductions have a higher error rate. Watch out for these areas:
Medical expenses
Not every health-related expense is deductible. Vitamins, supplements, and general wellness products generally don’t qualify—even if recommended by a doctor. Check CRA’s official list: “Eligible medical expenses you can claim on your tax return.”
Childcare expenses
Must be claimed by the lower-income spouse. Sports classes, art programs, and private school tuition usually don’t qualify unless the school specifically designates a childcare component.
Home renovations
Accessibility-related renovations (e.g., ramps, handrails, walk-in tubs) may qualify, but cosmetic upgrades like new tiles or décor don’t.
Employment expenses (T777)
Employment expense claims have become a focus area for CRA, especially after pandemic-era remote work. Large or unclear claims may be reviewed.
Tip: When in doubt, don’t guess. Incorrect claims can lead to reassessments and penalties.
- 4. Foreign Asset Reporting — Often Overlooked
If you held foreign assets (such as overseas investments or non-registered foreign securities) with a total cost exceeding CAD $100,000 at any point during the year, you must file Form T1135.
Many taxpayers forget this requirement. Failure to report can result in penalties and increased CRA scrutiny. If you have foreign assets, always confirm your reporting obligations with a tax professional.
- 5. Situations That Are More Likely to Be Reviewed
Some filings attract higher review rates, including:
- Filing multiple prior years’ returns at once
• Bankruptcy situations
• Estate filings for deceased individuals
• Less common deductions (e.g., moving expenses, northern resident deductions)
• Foreign tax credit claims
These situations are considered “non-routine,” so they’re reviewed more often.
How to Reduce the Risk of CRA Review
Four practical steps to stay on the safe side:
- 1. Wait for all tax slips before filing (this is crucial).
2. Keep your personal information updated (address, marital status, dependents, etc.).
3. Compare your return with last year’s — look for unusual changes.
4. Keep all receipts and supporting documents in case CRA asks for them.
Received a CRA Review Letter? Don’t Panic.
Most reviews are routine verifications, not accusations of wrongdoing. Carefully read the letter, provide the requested documents, and respond promptly. Most cases resolve quickly when handled properly.
Final Thoughts
CRA’s main focus is consistency: they want your return to match their records and reflect typical taxpayer behavior.
If you file honestly, keep good records, and make sure everything aligns, you’re already in a strong position.
If you’re facing a complex tax situation or want professional guidance to reduce audit risk, AYL CPA is here to help.
With over a decade of experience serving the Greater Toronto Area, our team of Chinese-speaking CPA professionals specializes in Canadian personal and small business tax planning and compliance. We understand CRA’s review patterns and can help you file with confidence, optimize tax savings, and avoid unnecessary risks.
Wishing you a smooth and stress-free tax season!