The Canada Revenue Agency (CRA) sorts formal tax disputes (objections) into defined complexity levels – Low, Medium, High – each with its own expected processing timeframe. Understanding these categories and timelines is crucial for tax practitioners managing client disputes. Below is an overview of each complexity level and typical resolution times for income tax objections.
Low Complexity Cases
Low complexity income tax objections involve straightforward issues and are generally resolved relatively quickly. CRA data shows that low-complexity income tax objections were completed in about 126 days on average (roughly 4 months) in September 2025. Examples of low-complexity matters include simple disputes over individual tax credits, personal deductions, Canada Child Benefit amounts, or disability tax credit claims. Practically, this means clients can expect a resolution within a few months.
Medium Complexity Cases
Medium complexity objections encompass moderately complicated tax issues and therefore take longer to conclude. On average, in September 2025, a medium-complexity income tax objection took around 10–12 months to resolve (recently about 323 days). Such cases often involve business-related matters or more involved personal tax issues – for example, disputes over business expenses, partnership income allocations, or small/medium corporation (T2) tax assessments.
High Complexity Cases
High complexity disputes are the most technically challenging and can span multiple years before resolution. They usually involve large corporate taxpayers or intricate tax arrangements – for instance, large corporate audits, complex business transactions, international transfer pricing issues, general anti-avoidance rule (GAAR) assessments, or aggressive tax avoidance schemes. These cases represent only about 2–3% of all objections, but they demand the longest timelines. CRA data indicates that in September 2025, it took over 690 days (approximately 2+ years) to resolve a high-complexity income tax objection. During this extended period, CRA appeals officers maintain regular contact with the taxpayer to manage the file.
Conclusion
In summary, the CRA’s complexity level framework for objections provides a valuable roadmap for expected resolution times: from a few months for low complexity issues up to multiple years for high/complex cases.
