What Triggers a CRA Audit?
The Canada Revenue Agency audits approximately 30,000 business and individual tax returns per year — not randomly, but based on sophisticated risk-scoring algorithms, informant leads, industry benchmarks, and specific red flags the CRA has identified from decades of audit experience. Understanding what triggers an audit is the first step toward both audit prevention and audit readiness.
Facing a CRA audit in Ontario? Pathak Professional Corporation in Mississauga provides comprehensive CRA audit representation for individuals and businesses. Call 437-872-7399 immediately — do not respond to the CRA without professional representation.
Most Common CRA Audit Triggers for Businesses
| Audit Trigger | Why CRA Flags It |
|---|---|
| Consistently reporting losses | Businesses losing money year after year raise questions about whether it is a genuine business or a personal expense write-off vehicle |
| Gross profit margins significantly below industry average | CRA has industry-specific benchmarks; a restaurant reporting 15% gross margin when the industry average is 60% signals unreported cash revenue |
| Large increase in expenses without corresponding revenue increase | Sudden spikes in deductions without business growth can indicate fabricated or inflated expenses |
| Home office and vehicle expenses at 100% | Claiming 100% business use of a home office or vehicle is almost never realistic and is a common audit flag |
| Shareholder loans not repaid | CRA’s corporate audit teams specifically review shareholder loan balances on T2 Schedule 50 |
| Personal services business risk | Incorporated contractors with single clients and no employees are high-priority targets |
| Large SR&ED claims | SR&ED credits are one of the highest-audit areas — claims are frequently reviewed for qualifying work |
| Cash-intensive businesses | Restaurants, construction, retail, and trades are perpetually high-audit sectors due to cash revenue under-reporting risk |
Types of CRA Audits and Reviews
| Type | Description | Typical Duration |
|---|---|---|
| Desk audit (correspondence review) | CRA sends a letter requesting specific documents to support a deduction or income amount. The simplest type — often resolved by mail | 4–12 weeks |
| Field audit | CRA auditor visits your business or your accountant’s office to review books and records. More comprehensive — covers all aspects of the return | 3–18 months |
| Net worth audit | CRA calculates your net worth at the beginning and end of a year; if the increase exceeds reported income plus non-taxable receipts, the difference is assumed to be unreported income | 6–24 months |
| GST/HST audit | Review of HST collected vs. remitted and input tax credit claims; often triggered by large ITC claims or significant discrepancies between T2 revenue and HST reported revenue | 1–6 months |
| Payroll audit | Review of payroll records, source deduction remittances, and taxable benefit calculations; often includes shareholder-employee compensation review | 2–6 months |
Your Rights During a CRA Audit
The CRA’s “Taxpayer Bill of Rights” establishes formal rights for everyone being audited:
- Right to professional representation: You have the right to be represented by your accountant or lawyer at any point in the audit process. You are NOT required to meet the auditor alone
- Right to privacy: The CRA may only access records relevant to the audit — not conduct unlimited fishing expeditions through all your financial records
- Right to receive a complete and accurate explanation of the CRA’s findings before a reassessment is issued
- Right to dispute: If you disagree with the audit findings, you have 90 days from the date of the Notice of Reassessment to file a Notice of Objection
- Right to delay assessment: You may request additional time to provide documents or respond to auditor requests — auditors must generally allow reasonable extensions
- Right to complain: If you believe the auditor has acted improperly, you can file a service complaint with the Taxpayer Ombudsperson
What to Do When You Receive a CRA Audit Notice
Step 1: Call Your CPA Immediately — Do Not Contact the CRA Alone
The most important step when you receive any CRA audit communication is to contact your CPA before responding. Many taxpayers inadvertently say things to auditors that expand the scope of an audit or that are used against them. Your CPA will communicate with the CRA on your behalf and ensure that all responses are strategic, accurate, and legally sound.
Step 2: Do Not Destroy Any Documents
Destroying or altering records after receiving an audit notice is a criminal offence. All existing records — even those showing problems — must be preserved. Your CPA can help you understand which records are most relevant and how to organize them effectively for the audit.
Step 3: Review the Requested Documents Before Providing Them
The CRA’s initial document request is typically broad. Your representative can negotiate the scope — you do not need to provide every document ever created about your business. Organize and review requested documents with your CPA first to understand what they show and whether any explanations or context should be provided alongside them.
Step 4: Respond Within the Deadline (Or Request an Extension)
CRA audit requests come with a specific response deadline — typically 30 days. If you need more time to gather documentation (which is common for complex audits), your CPA can request an extension. Do NOT simply ignore the deadline — this escalates the audit and damages your relationship with the auditor.
CRA Audit: Statute of Limitations
In Canada, the CRA generally has a 3-year “normal reassessment period” from the date of original assessment to reassess a tax return. However, this limit does not apply in cases of:
- Fraud or misrepresentation attributable to neglect, carelessness, or wilful default: No statute of limitations — the CRA can go back indefinitely
- Failure to file a return: The limitation period does not start until the return is filed
- Tax shelter or aggressive tax planning: Extended assessment periods apply
- Foreign income reporting failures: The period is extended to 6 years (or unlimited in fraud cases)
Penalties from a CRA Audit
| Violation | Penalty |
|---|---|
| Failure to report income (first offence) | 10% of the amount not reported |
| Failure to report income (repeat offence within 4 years) | 20% of the amount not reported |
| False statements (gross negligence) | Greater of $100 or 50% of understated tax |
| Evasion (criminal conviction) | Fines of 50%–200% of evaded tax + imprisonment up to 5 years |
| Repeated failures (habitual non-compliance) | Third-party civil penalties for promoters/preparers of false returns |
Frequently Asked Questions: CRA Audit Canada
How likely am I to be audited by the CRA?
For most individual taxpayers with straightforward employment income and standard deductions, the audit probability is very low — less than 1% of T1 returns are subject to detailed examination. Business owners, self-employed individuals, and corporations have higher audit probabilities, particularly in cash-intensive industries or if your return shows significant variances from industry norms or prior year patterns. The CRA also performs random audits of a small percentage of returns regardless of risk factors, so maintaining complete and accurate records protects everyone. The single best audit protection is consistent, accurate reporting with well-organized supporting documentation.
What records does the CRA require me to keep?
The CRA requires you to keep business records for a minimum of 6 years from the end of the tax year to which they relate. This includes: invoices (both issued and received), bank statements and cancelled cheques, payroll records, contracts, receipts for all claimed deductions, and any other records supporting your income and expense claims. Electronic records are acceptable if they are readable and complete. Destroying records before the 6-year period can result in penalties and may be treated as supporting evidence of income concealment during an audit.
Can I refuse to speak with a CRA auditor?
You have the right to representation, meaning your CPA or lawyer can communicate with the CRA on your behalf — you do not need to speak directly with the auditor. However, you cannot refuse to provide required documents or information to which the CRA has legal access. Obstructing a CRA audit (refusing to provide required records, destroying documents, or providing false information) is a criminal offence. The most effective approach is professional, cooperative, and strategic — your CPA manages all communications and ensures nothing is said that could expand the scope of the audit unnecessarily.
What is a CRA Notice of Objection and when should I file one?
A Notice of Objection is your formal dispute of a CRA reassessment that you believe is incorrect. You have 90 days from the date of the Notice of Reassessment to file a Notice of Objection (Form T400A or online through My Account). Filing an objection puts collection action on hold for the disputed amount while the CRA’s Appeals Division reviews your case. If the objection is unsuccessful, you can escalate to the Tax Court of Canada. The objection process is complex and time-sensitive — missing the 90-day deadline generally means losing your right to dispute. Contact Pathak Professional Corporation at 437-872-7399 immediately upon receiving a reassessment you believe is incorrect.
