When a Canada Revenue Agency auditor contacts your business, the instinct is often to handle it yourself, answer their questions, hand over what they ask for, and get it over with. That instinct can be costly. The CRA completed 84,356 audit cases in 2024-25, generating $18.1 billion in fiscal impact. These are not routine paperwork reviews, they are structured compliance examinations where every statement you make and every document you produce becomes part of the official record.
A CRA audit Toronto lawyer doesn't just help you respond. They control what you say, what you produce, and how the audit is scoped, protecting your business from reassessments, penalties, and, in serious cases, criminal prosecution.
This article explains how CRA audits work, what triggers them, what your rights are, and what legal defence looks like at each stage.
What Happens When the CRA Selects Your Business for an Audit
The CRA typically initiates an audit by mail or phone. An auditor will notify you of the date, time, and format, whether it will be conducted at your place of business, your accountant's office, or a CRA office. Upon arrival, the auditor presents valid government identification.
The audit itself is authorized under subsection 231.1(1) of the Income Tax Act (RSC 1985, c. 1 (5th Supp.)), which grants CRA the right to inspect and examine any records, accounts, and documents, both personal and business, that relate to your tax returns.
The earliest stage is also the highest-risk stage. Many business owners make the critical mistake of engaging directly with auditors before understanding what the audit is actually targeting. Every answer to every question becomes part of the record. A Toronto tax lawyer's most important role is often preventing inadvertent statements from creating problems that didn't exist before the auditor arrived.
Types of CRA Business Audits
Not every CRA audit looks the same. Understanding which type you're dealing with determines both the level of urgency and the appropriate response.
Correspondence (Desk) Audit The CRA requests specific documents or explanations by mail. This is the least intrusive format and often involves a narrow issue, a specific expense, a tax credit claim, or a discrepancy between a T4 slip and a filed return. Many desk audits are resolved with documentation alone.
Field Audit An auditor visits your place of business or your accountant's office. They review your accounting systems, bank statements, invoices, contracts, and other business records. Field audits can last weeks or months and often cover multiple tax years. These are the audits that most benefit from legal representation.
GST/HST Audit Examines your GST/HST filings separately from income tax returns. CRA's own internal evaluation found that 99% of GST/HST audit files result in a reassessment, meaning if you are selected, some change to your account is the statistical norm.
Payroll Audit Focuses on payroll deductions, T4 filings, and worker classification. Misclassifying employees as independent contractors is a common trigger and can result in significant back-assessments including employer-side CPP contributions and EI premiums.
What Triggers a CRA Audit, Red Flags for Toronto Businesses
The CRA uses risk-scoring models to select audit targets. While the exact algorithm is not public, patterns from CRA guidance and practitioner experience point to consistent triggers.
Revenue and Expense Mismatches Inconsistent revenue reporting year-over-year, expenses that grow faster than revenue, or expense ratios significantly above your industry average will flag a file for review. The CRA compares your returns to industry benchmarks and to your own historical filings.
Personal-Use Expenses Claiming 100% business use of a vehicle or a home office without proper documentation is one of the most frequently challenged items in audits. Mixed-use expenses require logs and records; without them, they become easy adjustment targets.
Related-Party Transactions Transactions with family members, shareholders, or related corporations receive heightened scrutiny. The CRA applies transfer pricing principles to ensure income isn't being shifted to lower-tax entities without commercial justification. These arrangements must be at fair market value with proper documentation.
Shareholder Loans Shareholder loan balances are a growing CRA audit focus for owner-managed corporations. If a shareholder borrows from the corporation and the loan is not repaid or included in income within the prescribed timeframe, the CRA can include the full loan amount in the shareholder's personal income.
GST/HST Refund Claims Businesses that consistently claim GST/HST refunds face elevated scrutiny. While legitimate for exporters and capital-intensive startups, chronic refund positions in service businesses raise flags.
2025-2026 Enforcement Changes Budget 2024 expanded CRA's compliance powers significantly. The CRA can now issue compliance orders, notices of non-compliance carrying penalties up to $25,000, and compulsory interview notices. The audit volume reflects this shift: 84,356 cases in 2024-25, up from 69,000 the prior year.
Your Rights During a CRA Audit
The Taxpayer Bill of Rights establishes formal rights that apply throughout the audit process. Understanding these rights is not just protective, it shapes how you engage with the process.
The Right to Representation You have the right to have a tax lawyer or accountant present at all meetings with CRA. You are not required to speak to an auditor alone.
The Right Against Self-Incrimination Once a CRA audit transitions to a criminal investigation (see below), your constitutional rights under the Canadian Charter of Rights and Freedoms engage fully. At that point, you are not obligated to provide information or answer questions without legal counsel.
Solicitor-Client Privilege Communications between you and your lawyer are protected by solicitor-client privilege. Before producing documents to CRA, a lawyer can review what is being produced and ensure privileged communications, even those held by your accountant, are not disclosed inadvertently. Once privileged documents are produced, privilege is typically waived.
Records Timeframe The CRA can generally reassess corporate returns for the previous three to four years, depending on your corporation type. Most Canadian-controlled private corporations (CCPCs) have a three-year normal reassessment period; other corporations generally have four years. Where gross negligence or fraud is alleged, there is no time limitation. This is one reason maintaining records for eight to ten years is standard practice.
When a CRA Audit Becomes a Criminal Investigation
Most business audits do not become criminal investigations. But the path from audit to investigation is real, and the rules change dramatically when it happens.
A criminal investigation begins when CRA has reasonable grounds to believe a taxpayer has committed tax evasion or fraud. The distinction matters because the Supreme Court of Canada, in R v. Jarvis (2002 SCC 73), held that once the "predominant purpose" of an inquiry shifts from tax assessment to criminal prosecution, the CRA can no longer use its civil audit powers to gather evidence. If they do, that evidence cannot be used in a prosecution, a significant Charter protection for the taxpayer.
Practically, this means that once a criminal investigation begins, CRA investigators must obtain search warrants to access your records. You cannot be compelled to answer questions or produce documents without a warrant. The right against self-incrimination applies in full.
The consequences of criminal conviction are severe. Under section 239 of the Income Tax Act, a summary conviction carries fines of 50% to 200% of the evaded taxes and up to two years of imprisonment. If prosecuted by indictment, the penalties increase: fines of 100% to 200% of the evaded taxes and up to five years of imprisonment.
Under the Excise Tax Act (for GST/HST fraud), conviction on indictment carries fines of 100% to 200% of the evaded tax and up to five years of imprisonment.
The warning signs that an audit may be transitioning to an investigation include: auditors suddenly stop asking questions; you receive a visit from CRA Special Investigations rather than Audit division; a search warrant is executed at your business or accountant's office. If any of these occur, retain legal counsel immediately.
How a CRA Audit Toronto Lawyer Defends Your Business
A tax lawyer's role is not simply to hand over documents and hope for the best. Active legal representation changes the outcome of audits at every stage.
Controlling the Audit Scope Auditors frequently request more records than they are entitled to or seek to extend an audit beyond the years initially proposed. A tax lawyer can challenge overreach, limit what is produced to what is legally required, and push back on scope expansion that lacks legal basis.
Document Review Before Production Before any records are handed over, a lawyer reviews them for privilege, relevance, and accuracy. Documents that contain legal advice are protected and should not be produced. Documents that are disorganized or misleadingly presented can be structured to tell the accurate story.
Written Legal Submissions Rather than letting an auditor draw their own conclusions, a tax lawyer can prepare formal written submissions that explain the legal and factual basis for the positions taken on the return. These submissions become part of the audit record and can significantly influence the outcome before a reassessment is issued.
The Audit-to-Investigation Firewall Perhaps the most critical role: monitoring the audit for signals that it is shifting toward a criminal investigation, and asserting Charter protections at the moment they become relevant. This transition must be managed in real time. Missing it can mean evidence is gathered under civil audit powers that would otherwise be inadmissible.
Notice of Objection If the audit results in a Notice of Reassessment, a tax lawyer can file a formal Notice of Objection with CRA's Appeals Division within 90 days of the reassessment date. This triggers an independent review by an appeals officer who was not involved in the original audit. The matter is essentially re-adjudicated.
CRA's own processing time data (as of March 2026):
- Low complexity income tax objections: approximately 127 days to resolve
- Medium complexity income tax objections: approximately 356 days to resolve
If the objection is unsuccessful, the taxpayer has 90 days from CRA's decision to file an appeal with the Tax Court of Canada.
Martina Caunedo, Hadri Law's tax lawyer, brings more than twelve years of international tax experience, including taxpayer advocacy during CRA audits, formal objections, and Tax Court appeals. She focuses specifically on tax strategies for medium-sized businesses, the business owners who face the most audit exposure and often have the least institutional support.
Common Mistakes Business Owners Make During a CRA Audit
Speaking to auditors without counsel The most common and most consequential error. An answer that seems routine, "yes, those were all business meals", can become the foundation for a much broader challenge.
Producing documents without review Everything produced to CRA is part of the record. Producing more than required, or producing documents that reveal issues the audit wasn't focused on, can open new lines of inquiry.
Missing the objection deadline The 90-day deadline for filing a Notice of Objection is firm. Extensions can be requested, for up to one year, but they are not guaranteed. Once the deadline passes without a timely objection or extension, the reassessment becomes final.
Treating a criminal investigation like a civil audit If the CRA's purpose has shifted to prosecution, continuing to cooperate as if it is a routine audit waives protections that were available to you. The moment you suspect the inquiry has become criminal in nature, retain counsel.
Relying on an accountant for legal matters Your accountant is essential for gathering and explaining your records. But objections, Tax Court appeals, Charter arguments, and privilege claims are legal matters, they require a lawyer.
Frequently Asked Questions
How do I know if the CRA is auditing my business?
CRA typically contacts you by mail or phone. A letter requesting documentation, receipts, bank statements, explanations for specific line items, is the first signal. Field auditors present government ID upon arrival. If you are unsure whether you are under audit or investigation, a tax lawyer can clarify your position quickly.
How long does a CRA audit take?
It depends on the type and complexity. A correspondence audit might be resolved in weeks. A field audit covering multiple years can take six months to over a year, depending on auditor workload and how quickly records are provided.
Can I refuse a CRA audit?
No. Under subsection 231.1(1) of the Income Tax Act, CRA has the legal right to audit. Non-compliance can result in penalties. However, a lawyer can ensure the audit is conducted within the scope the law actually permits, and push back on requests that exceed it.
What is the difference between a CRA audit and a CRA criminal investigation?
A tax audit verifies the accuracy of your returns. A criminal investigation seeks evidence of tax evasion or fraud. Different legal rules apply: civil audit powers cannot be used once the predominant purpose becomes prosecution (R v. Jarvis, 2002 SCC 73). Criminal investigators must obtain warrants, and the taxpayer's right against self-incrimination applies in full.
When should I hire a tax lawyer rather than relying on my accountant?
Your accountant handles document gathering, routine correspondence, and explaining filings well. A tax lawyer becomes essential when: the audit becomes adversarial; a criminal investigation is suspected; you receive a Notice of Reassessment you intend to dispute; or the matter may proceed to Tax Court.
How long do I have to dispute a CRA reassessment?
Ninety days from the date on the Notice of Reassessment. You can apply for a one-year extension if you miss the deadline, but extensions are not guaranteed. Acting within the 90-day window is strongly advisable.
What records does the CRA examine during a business audit?
Filed tax returns, bank statements, invoices, contracts, ledgers, journals, rental records, and records of related individuals or entities. CRA can also examine personal records in certain circumstances, particularly where shareholder loans or personal benefits are at issue.
Sources & Official Resources
Federal Statutes Cited
- Income Tax Act, RSC 1985, c. 1 (5th Supp.), s. 231.1, CRA Audit Powers
- Income Tax Act, s. 239, Tax Evasion Penalties
- Excise Tax Act, RSC 1985, c. E-15, s. 327, GST/HST Fraud Penalties
Case Law
CRA Official Guidance
- CRA: Resolving Your Dispute, Objection Rights Under the Income Tax Act (P148)
- CRA: Processing Times and Complexity Levels, Income Tax and GST/HST Objections
- CRA: 2024-25 Departmental Results Report
- CRA: Taxpayer Bill of Rights
Contact Hadri Law
Receiving a CRA audit letter or Notice of Reassessment is not the end of the matter, but how you respond in the first days matters enormously. Retaining a tax lawyer early gives you control over what is said, what is produced, and how your position is presented.
Hadri Law's tax practice is led by Martina Caunedo, a tax lawyer with more than twelve years of international tax experience, including CRA audit representation, formal objections, and Tax Court appeals. Our office is located in the heart of Toronto's financial district at First Canadian Place, 100 King Street West, Suite 5700.
Call (437) 974-2374 to schedule a free initial consultation. We represent businesses across Toronto, Mississauga, Oakville, Burlington, Hamilton, and the GTA in English, French, Spanish, and Catalan.
This article provides general legal information and is not legal advice. Every situation is unique. Contact a lawyer to discuss your specific circumstances.
