CRA audits aren’t random. They’re triggered by patterns in your return that look wrong compared to what they expect. If you’re self-employed and filing a T2125, here are the seven things most likely to get you a letter, and how to avoid them.
Red Flag #1: Your Expenses Are Way Too High for Your Industry
CRA benchmarks your expense-to-income ratio against other businesses in your industry code. If most freelance graphic designers claim 25–35% of revenue as expenses, and you’re claiming 70%, your return gets flagged automatically.
The fix isn’t to reduce legitimate deductions. It’s to make sure you can prove every single one. If your expenses genuinely are higher than average, that’s fine. But you’d better have the receipts.
Red Flag #2: Everything Is a Round Number
If your T2125 shows $5,000 in vehicle expenses, $2,000 in office supplies, and $1,500 in advertising, CRA assumes you’re estimating, because you are. Real tracked expenses look like $4,847.23 and $1,976.50.
Round numbers signal that you didn’t actually track anything and you’re guessing at tax time. That’s exactly the kind of return an auditor wants to look at.
Red Flag #3: Claiming 100% of Your Home as an Office
Your home office deduction should reflect the actual percentage of your home used exclusively for work. If you live in a 1,000 sq ft apartment and claim a 600 sq ft home office, CRA knows that doesn’t add up.
Most freelancers legitimately claim 10–25% of their home. Anything above 30% gets scrutinized. Claiming 100% of rent or mortgage interest is basically asking for an audit.
Red Flag #4: 100% Vehicle Expenses With No Logbook
CRA requires a mileage logbook to claim vehicle expenses. No logbook means no deduction, period. But even with a logbook, claiming 100% business use raises eyebrows unless you have a separate personal vehicle.
Most self-employed people realistically use their vehicle 40–70% for business. If you’re claiming higher, make sure your log shows it. “I use it for work all the time” isn’t documentation.
Red Flag #5: Your Income Doesn’t Match What Others Reported
Starting in 2026, digital platforms report your earnings directly to CRA. If Uber says you earned $32,000 and your T2125 shows $24,000, that’s an instant flag.
It’s not just platforms. Clients who paid you more than $500 may issue a T4A slip reporting what they paid. If the T4A says $15,000 and your return shows $12,000, CRA notices.
The most common cause? Confusing gross and net income. Platforms report gross earnings (before their fees). You should report gross on your T2125 too, then deduct platform fees as a business expense.
Red Flag #6: Meals and Entertainment Without Documentation
CRA allows you to deduct 50% of meals and entertainment that are directly related to earning business income. But “directly related” means you need to document:
- Who you were with (name and business relationship)
- Where you ate
- What business was discussed
- The receipt showing the amount
A credit card statement showing $87 at a restaurant isn’t enough. Without proper documentation, the entire claim gets denied in an audit. A pattern of undocumented meal claims suggests the rest of your return might be sloppy too.
Red Flag #7: Your Income Swings Wildly With No Explanation
Going from $90,000 one year to $35,000 the next isn’t inherently suspicious. Freelance income fluctuates. But if your income drops dramatically while your expenses stay the same or increase, CRA wonders if you’re underreporting revenue.
If your income legitimately dropped (lost a major client, took parental leave, health issues), consider including a note with your return explaining the change. You’re not required to, but it can prevent unnecessary questions.
How to Audit-Proof Yourself
You don’t need to be paranoid. You need to be organized.
- Keep every receipt. Digital copies are fine, but they must be legible and show the vendor, date, amount, and what was purchased.
- Maintain a mileage logbook if you claim vehicle expenses: date, destination, kilometres, business purpose.
- Separate business and personal expenses. Use a dedicated bank account and credit card for business.
- Document meals with who, where, and why for every claim
- Reconcile your income against platform summaries and T4A slips before filing
- Keep records for 6 years. CRA can reassess your return going back that far, and up to 10 years in cases of fraud.
Stay Audit-Ready Without the Stress
Accountly automatically categorizes your expenses, stores receipt photos, and flags anything that looks unusual before you file. If CRA ever does come knocking, your records are organized, timestamped, and ready to go.
FAQ
How likely is it that CRA will audit my freelance return? CRA doesn’t publish exact audit rates, but self-employed individuals are audited at higher rates than employees. Returns with high expense ratios, round numbers, and income mismatches are prioritized by automated screening systems.
What happens during a CRA audit? CRA typically starts with a letter requesting specific documentation: receipts, bank statements, contracts. Most audits are handled by mail. If they need more, they may schedule an in-person review. The process can take several months.
Can CRA audit returns from previous years? Yes. CRA can reassess returns from the past 3 years under normal circumstances, 6 years if they suspect carelessness or neglect, and indefinitely if they suspect fraud or misrepresentation.
What if I don’t have a receipt for a legitimate expense? Try to reconstruct the evidence: bank statements, credit card records, email confirmations. CRA may accept alternative documentation, but the burden of proof is on you. Going forward, photograph receipts immediately.
Does claiming a home office increase my audit risk? Not if the claim is reasonable. A 10–20% claim with proper square footage calculations is normal. Claiming 50%+ of a home you also live in, or claiming the simplified $2/day method alongside detailed expenses, raises flags.
Should I file my own taxes or hire an accountant? If your T2125 is straightforward (single income source, few expense categories), self-filing with good software is fine. If you have complex deductions, multiple income sources, or GST/HST obligations, an accountant pays for themselves by catching errors and optimizing deductions.
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