5 Tax Myths Small Business Owners Believe (And What's Actually True)
Common small business tax myths, debunked. Ottawa CPA Majdi Ibrahim separates fact from fiction on deductions, incorporation, and audits.
By Majdi Ibrahim, CPA | Majdi Ibrahim, CPA Professional Corporation | Ottawa, Ontario
Some of the most common tax advice circulating among small business owners isn't quite right — and a few of these myths can actually cost you money if you act on them. Here are five I hear regularly from clients and prospective clients across Ottawa.
Myth #1: "If I don't get a receipt, I can't deduct it."
The reality: receipts are the best evidence, but they're not the only evidence. The problem is what a bank or credit card statement actually proves — and what it doesn't.
A bank statement may prove that money left your account. It does not always prove what was purchased, who it was for, or why it was business-related. For some expenses, that gap doesn't matter much. For others — meals, vehicle expenses, GST/HST input tax credits, and larger purchases — the supporting detail matters more, because the deduction depends on facts a bank line simply doesn't show.
So: a missing receipt doesn't automatically mean a deduction is impossible. But the goal isn't "do I have something in my bank statement" — it's "do I have a complete enough record to explain this if asked."
Myth #2: "Incorporating automatically lowers my taxes."
The reality: this is one of the biggest misconceptions out there, and it's worth understanding properly — we cover this in more detail in our incorporation guides, but here's the short version.
Incorporation is primarily a deferral tool, not an automatic tax cut. When money comes out of a corporation to you personally as salary or dividends, personal tax applies on top of what the corporation already paid. The combined result is generally designed to land roughly where personal tax on that income would have been in the first place — a concept called integration. The real benefit is having income taxed at a lower rate while it stays inside the corporation — which only matters if you're actually leaving money in there.
Myth #3: "CRA never checks small businesses, only big companies."
The reality: CRA reviews and audits businesses of all sizes. Reviews can be triggered by inconsistencies between filings, patterns common to certain industries, unusual or large claims relative to revenue, or simply being selected as part of routine review programs.
Being small doesn't make you invisible — it just means a review, if it happens, is usually less disruptive than a large corporate audit. The best defence isn't "hoping CRA doesn't notice" — it's having organized records that hold up if anyone ever does ask.
Myth #4: "I can write off anything as long as it's 'for the business.'"
The reality: the actual test is whether an expense was incurred to earn income — and "for the business" in casual conversation often stretches well past that. The key distinctions are business purpose, personal benefit, reasonableness, and how mixed-use expenses get split.
A laptop used partly for business may support a business-use claim for that portion. A family vacation where you answered a few emails does not become a business trip.
This doesn't mean the rules are unreasonable — many genuinely business-related costs are deductible, often more than people realize. But "I can justify it somehow" and "this meets the deductibility test" aren't always the same thing, and the gap between them is where CRA reviews tend to focus.
Myth #5: "If I don't owe anything, filing late doesn't matter."
The reality: in the simplest personal-tax case, this is mostly true — the late-filing penalty for a personal return is calculated based on the balance owing, so if you truly owe nothing, the penalty itself is generally zero.
But "no penalty in this specific case" isn't the same as "filing late is harmless":
- If you're owed a refund, filing late just means waiting longer for your own money
- Filing late can delay or disrupt benefit and credit payments that are based on your filed return
- If you do have a balance owing, late-filing penalties and interest apply as usual — and if you had a late-filing penalty in a prior year, a repeat late filing with a balance owing can trigger a higher penalty rate
- Other filings — GST/HST, payroll, corporate returns — have their own deadlines and consequences, and the "no balance owing means no penalty" logic doesn't carry over to all of them
In the simplest personal-tax case, no balance owing usually means no late-filing penalty. But that doesn't mean filing late is harmless — it depends on which filing, and what else is going on.
The Pattern Behind All Five
Notice that almost every myth above has a kernel of truth — that's usually how tax myths spread. The danger isn't that they're completely wrong; it's that they're wrong in the specific situation where it matters most to you.
When something tax-related sounds like a simple, universal rule — "always," "never," "automatically" — that's often the moment it's worth a second opinion before acting on it.
Got a Tax "Fact" You're Not Sure About?
If you've heard something tax-related and you're not sure whether it applies to your situation, it's worth asking before assuming.
Majdi Ibrahim, CPA works with small business owners and self-employed individuals across Ottawa — happy to sort fact from myth for your specific situation.
👉Book a consultation at www.treehousecpa.com
This article is provided for general informational purposes only and does not constitute personalized tax advice. Please consult a CPA for advice specific to your situation.
