Understanding How CRA Selects Calgary Business Owners for Audit
Receiving a letter from the Canada Revenue Agency requesting information about your tax return is unsettling for most Calgary business owners — but it's important to understand that not every CRA inquiry is a full audit. CRA conducts several types of reviews, from simple matching exercises that flag discrepancies between your return and third-party slips, to comprehensive audits of your business income and deductions over multiple years. Working with an experienced Calgary CPA during a CRA review can help protect your position and ensure your response is complete and accurate — book a free consultation with our Calgary team.
CRA selects returns for audit through a combination of automated risk-scoring systems, random selection, industry-wide audit campaigns, tips from third parties, and matching of reported income against third-party data. Understanding what puts a return on CRA's radar helps you file accurately — and understand what documentation to have ready if questions arise. If you're unsure how your current filings compare to CRA's risk criteria, speaking with a Calgary accountant can clarify your position quickly.
Common Audit Triggers
While CRA doesn't publish its exact selection criteria, these factors are known to increase audit risk:
- Large or disproportionate deductions: Home office expenses that represent an unusually high percentage of income, or business expenses that significantly exceed industry norms, attract scrutiny.
- Recurring losses: A business that reports losses year after year without evidence of a reasonable expectation of profit may be reviewed for hobby loss disallowance.
- Rental income discrepancies: CRA cross-references land title data, utility registrations, and Airbnb data to identify unreported rental income.
- Self-employment income: Cash-based businesses and high-deduction industries (construction, food service, personal services) are consistently higher audit targets.
- Large charitable donations: Donations that are a very high percentage of net income relative to historical patterns draw additional verification requests.
- Unreported foreign income or assets: T1135 non-filers and inconsistencies with CRA's international data-sharing programs trigger reviews.
- GST/HST discrepancies: Significant differences between reported GST and income tax revenues for the same period raise flags.
- Prior audit history: Taxpayers who had prior audits with adjustments are more likely to be selected again.
- Third-party tips: Disgruntled employees or former business partners sometimes report suspected non-compliance.
Types of CRA Examinations
| Type | What It Is | Scope |
|---|
| Desk audit / review | CRA requests information by mail | Usually one specific claim or income type |
| Field audit | CRA auditor visits your premises or requests records | One or more fiscal years, possibly full return |
| Net worth audit | CRA estimates income from assets and lifestyle | Used when records are absent or suspected unreported income |
| GST/HST audit | Review of GST filings and ITC claims | Specific reporting periods |
| Payroll audit | Review of source deductions and T4s | Employer records and remittances |
How to Respond to a CRA Audit
Receiving an audit notification does not mean CRA has concluded you owe more tax. It means they want to verify information. Here's how to respond effectively:
- Read the letter carefully: CRA's initial contact letter specifies exactly what they're reviewing and what documents they need. Respond only to what's asked — don't volunteer additional information.
- Gather your records: Assemble all supporting documentation for the items under review — receipts, invoices, bank statements, agreements, log books, and any other evidence that supports your claimed amounts.
- Meet deadlines: CRA sets response deadlines in their audit letters. Missing these deadlines can result in arbitrary assessments. Request an extension if you need more time — CRA generally accommodates reasonable requests.
- Get professional representation: A tax professional can represent you before CRA, communicate on your behalf, and ensure your responses are accurate, complete, and legally protective. Having a professional involved typically results in more efficient resolution.
Don't Ignore CRA Contact
Ignoring a CRA audit letter is among the worst responses. If CRA doesn't receive information within their deadline, they can proceed to issue an arbitrary reassessment based on their own estimates — which is almost always worse than the actual facts. Always respond, even if only to request an extension.
Your Rights as a Canadian Taxpayer During a CRA Audit
The Taxpayer Bill of Rights gives Canadian taxpayers important protections during CRA audits:
- The right to be treated with courtesy, consideration, and respect
- The right to receive complete and accurate information in official languages
- The right to have CRA keep your information confidential
- The right to formal review and appeal of CRA decisions
- The right to be represented by an authorized agent (such as a tax professional)
If you disagree with a CRA reassessment, you have the right to file a Notice of Objection within 90 days of the assessment date. This is a formal dispute process with its own procedures — a tax professional can help you assess whether an objection is warranted and how to build your case.
Swift Accounting Stands With You Through CRA Reviews
A CRA audit doesn't have to be overwhelming. With proper preparation, accurate records, and experienced corporate tax representation, the vast majority of audits conclude with no additional tax owing — or minor adjustments. Swift Accounting has guided many Calgary business owners through CRA reviews, desk audits, and formal objection processes. Many Calgary business owners find it's worth reviewing their CRA risk exposure with their accountant before year-end. If you've received a CRA letter or want to ensure your returns can withstand scrutiny, book a free consultation with our Calgary team.