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What are the chances of getting audited by the CRA?
Low for an employee with only slip income, and materially higher for anyone who is self-employed, runs a small corporation, deals in cash, or claims expenses well above the norm for their industry. The CRA does not publish an audit rate per taxpayer; it selects files by risk score, matching what you report against T-slips, GST/HST returns, property records and industry benchmarks, and it also runs targeted reviews of sectors such as construction, restaurants and real estate. The way to lower your odds is boring: file on time, keep the books reconciled to the bank, keep a receipt behind every claim, and stay consistent year to year. Verified against CRA audit guidance, September 2026.
At a Glance
Facing an audit by the Canada Revenue Agency (CRA) can be an intimidating prospect for many taxpayers. Each year, the CRA conducts audits to ensure compliance with the tax laws and to verify the accuracy of the information provided in tax filings. While many may believe that audits are entirely random, there are in fact certain red flags and triggers that increase the likelihood of being selected for an audit. It’s important for individuals and businesses alike to understand these indicators, as awareness and proper tax practices can reduce the risk of drawing unwanted attention from the CRA.
Some common triggers include significant discrepancies between reported income and lifestyle, errors or inconsistencies in submitted tax returns, and claiming deductions that are unusually high compared to others in similar financial situations. The CRA also pays close attention to self-employed individuals and businesses that conduct a large number of cash transactions. Moreover, those with a history of previous audits or adjustments may be more likely to be audited again.
However, not all audits are the result of red flags; some are indeed selected at random. It is estimated that a small percentage of corporations and individuals are audited each year on this basis. Being prepared and having transparent records can mitigate the stress and potential complications that come with being audited, whether it is random or triggered by specific concerns of the CRA.
Overview of CRA Audits
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The Canada Revenue Agency (CRA) conducts audits to verify compliance with tax laws. By understanding what triggers an audit and recognizing the risk factors, taxpayers can better prepare and reduce the chances of being audited.
What Triggers a CRA Audit?
An audit by the CRA can be initiated through various means:
Risk Factors for Small Businesses
Small businesses should be aware of certain activities that might increase the risk of an audit:
Statistical Likelihood of Being Audited
While the overall likelihood of an audit is relatively low, certain factors may elevate a business's risk:
CRA Audit Process
The CRA Audit Process involves meticulous examination of an individual's or business's financial records to ensure compliance with tax laws. This process includes several stages and the use of varied techniques to assess the accuracy of tax returns.
Stages of a CRA Audit
A CRA audit typically commences with an initial contact by the agency and progresses through various stages. The first stage is the Selection, where a tax file may be chosen for audit due to random selection, comparison against norms, or as a result of information obtained from third-party sources. Following this, the Review and Planning stage involves the auditor developing a tailored audit plan based on the risks or issues identified.
Then comes the Execution stage, during which the CRA conducts a thorough investigation of the taxpayer’s records. If discrepancies are found, a proposal letter will be issued with the auditor's findings. The auditor will give the taxpayer 30 days to respond and refute the auditor's findings if they choose to do so. After the proposal stage, the auditor sends out their final letter along with a notice of reassessment, if applicable.
Documentation and Information Requests
Throughout the audit process, taxpayers will receive official requests for information. These requests can include income statements, receipts, books, records, bank statements or any other documents necessary to verify the accuracy of the filed tax returns. The CRA generally specifies a response deadline, and it is critical for taxpayers to comply with these requests to ensure a smooth audit process.
If the taxpayer does not provide all banking information, the auditor also has the ability to request them directly from financial institutions through requirements for information (RFIs). This is permitted under section 231.2 of the Income Tax Act and makes it mandatory for banks to provide CRA with all financial information requested.
CRA Audit Techniques
The CRA employs a combination of techniques during an audit. Comparative Analysis involves reviewing a taxpayer's data against similar tax filers’ information. Direct Audit Methods may be used where auditors directly examine books, records, and supporting documentation. As indicated in Chapter 13.3.1 of the CRA Audit Manual, the CRA may opt to use Indirect Verification of Income (IVI) audit techniques when assessing the overall financial situation of a taxpayer to identify discrepancies between reported income and lifestyle indicating unreported income. IVI usually includes a bank deposit analysis, where all deposits made to all of the taxpayer's personal bank account are compared with the income reported on their personal tax return.
Reducing the Risk of an Audit
When it comes to reducing the risk of a Canada Revenue Agency (CRA) audit, certain practices can make a difference. These include accurate and timely tax filing, maintaining comprehensive records, and seeking the expertise of a professional accountant.
Accurate and Timely Filing
Accuracy in tax returns is critical. One should ensure that all income is reported, and calculations are double-checked to avoid discrepancies that might flag the CRA's attention. Timely filing of tax returns is equally important. Late submissions can increase scrutiny and the likelihood of an audit.
Keeping Detailed Records
One should keep detailed records of all financial transactions. Receipts, invoices, and documents related to income and deductions should be meticulously filed and readily accessible. If the CRA requests supporting documentation, a taxpayer must be able to produce it promptly.
Hiring a Professional Accountant
Professional accountants can help navigate the complexities of tax laws, ensuring compliance and minimizing the likelihood of errors that could result in an audit. They are trained to understand the nuances of bookkeeping and tax preparation, which can act as a preventive measure against potential audits.
The books that do not raise flags
Late GST/HST returns, expense ratios out of line with the industry and income that does not match the slips are the flags the CRA scores on, and all three start in the ledger. Xero reconciles every transaction to the bank feed with the GST/HST on each line and prepares the return from the same numbers, which is the shape of books an auditor can follow. Through our link it is 80% off for 6 months, applied at checkout with no code.
See the Xero offerConsequences of a CRA Audit
When the Canada Revenue Agency (CRA) conducts an audit, the taxpayer is subject to a thorough review that can lead to various repercussions. These include adjustments to tax returns, imposition of interest and penalties, and potential legal actions.
Potential Outcomes of an Audit
An audit by the CRA can lead to several potential outcomes for a taxpayer. If discrepancies are found, the CRA may adjust the tax returns to accurately reflect the taxpayer's obligations. This can result in additional taxes owed if it is determined that the taxpayer underreported income or overstated deductions. Conversely, if the audit finds that the taxpayer overpaid, they may receive a refund. It should also be noted that if no issues are uncovered, the CRA will not make any changes to the filed tax returns.
Penalties and Fines
The CRA may levy penalties and fines on taxpayers if the audit uncovers intentional misrepresentations or severe negligence. The penalties can be substantial, sometimes amounting to more than the additional tax owed. For example, a gross negligence penalty can be as high as 50% of the understated tax and/or the overstated credits related to the false statement or omission.
Dispute Resolution Options
After the completion of an audit, if taxpayers disagree with the audit conclusions, they have the option to dispute the findings. They can file an objection, which will prompt an internal review of the decision made during the audit. Should they remain dissatisfied with the outcome after exercising this option, they may take their case to the Tax Court of Canada for an independent judgment. It's important for taxpayers to act in a timely manner, as there are strict deadlines for filing objections.
Disallowed expenses are the usual bill
Most reassessments we see are not fraud findings; they are expenses disallowed because the receipt could not be produced. Dext photographs or fetches every receipt and bill and files it against the matching entry in Xero or QuickBooks, so the claim and its evidence live together for the six years the CRA requires. Through our link it is 90% off for 3 months, applied when you upgrade after the trial; there is no promo code.
See the Dext offerTaxpayer Rights and Responsibilities
The Canada Revenue Agency (CRA) upholds a Taxpayer Bill of Rights that guarantees fair treatment and transparent processes. Taxpayers, simultaneously, must adhere to tax laws and fulfill their financial obligations accurately.
Rights During an Audit
Taxpayers in Canada are entitled to a set of rights during the audit process. Key rights include:
Your Obligations Under the Tax Law
Taxpayers are responsible for a number of obligations under Canadian tax law, which include:
Audit Trends and Changes
In response to the ever-evolving nature of tax compliance, the Canada Revenue Agency (CRA) not only adapts its audit focus areas but also modifies its audit activities to improve efficiency and effectiveness.
Current CRA Focus Areas
Recent Changes in Audit Activity
By focusing on these specific areas and adapting their approach, the CRA aims to maintain compliance and fairness in the tax system.
The cheapest audit insurance is a receipt behind every claim
Most reassessments we see are not disputes about the law; they are expenses that were real but could not be proven three years later. The fix costs less than an hour of an accountant's time each month. Capture every receipt and bill at the moment it happens with Dext, which reads the supplier, amount and GST/HST off the image and files it against the transaction in Xero or QuickBooks (90% off for 3 months through our link), and reconcile the bank every month so revenue on the return equals deposits in the account. Our guide to small business write-offs covers which claims draw attention when they are out of proportion, and how far back the CRA can audit explains the six-year record rule.
Frequently Asked Questions
What factors increase the risk of being selected for a CRA audit?
Self-employment or a small corporation, a cash-heavy business, expenses well above your industry benchmark, repeated losses, large home office or vehicle claims, income that does not match T-slips or GST/HST filings, shareholder loans that never clear, and unreported property sales. Late or amended returns and third-party tips add to the score.
How many years back does the CRA review in an audit?
Usually the most recent two or three years, which fall inside the normal 3-year reassessment period. It can extend to 6 years in specific cases and without limit where it finds misrepresentation or fraud, and it can look at a closed year to check figures carried forward into an open one.
What are the common reasons for receiving a CRA audit letter?
A mismatch between your return and third-party data, a claim the CRA is reviewing across many taxpayers that year (home office, moving expenses, GST/HST input tax credits), industry-targeted reviews, a refund or loss large enough to trigger a pre-assessment review, or selection from a risk-scored list.
What support can I expect during a CRA audit?
You can authorise an accountant to represent you through Represent a Client, and the CRA deals with them directly. The Taxpayer Bill of Rights entitles you to know why you are being audited, to see the auditor's proposed adjustments before they are assessed, and to object within 90 days of a reassessment.
How often does the CRA conduct payroll audits?
Payroll examinations are common for employers with contractors, taxable benefits, or remittances that do not match T4 totals. They check that source deductions were withheld and remitted on time and that workers are correctly classified as employees or contractors. Payroll software that remits automatically removes most of the exposure.
What should I do if the CRA contacts me for an audit?
Confirm the contact is genuine through your CRA account, note the years and items under review, tell your accountant the same day, and gather the bank statements, invoices and receipts before the first meeting. Answer what is asked, in writing where possible, and do not volunteer records for years or items not under review.

Sebastien ProstCPA, Ex-CRA
Licensed CPA with 10+ years of experience, including work with the Canada Revenue Agency. Founder of LedgerLogic, a cloud accounting firm serving Canadian SMEs. Xero Certified Advisor.