Receiving a Notice of Reassessment from the Canada Revenue Agency (CRA) can be unsettling. You might feel that the CRA got it wrong and that you’re being asked to pay more tax than you should. The good news is that you can fight a CRA reassessment if you believe it’s incorrect. Canadian taxpayers have the right to dispute an assessment or reassessment and have it reviewed impartially. This article will explain, in clear steps, how to dispute a CRA reassessment.
What Is a CRA Reassessment?
Before jumping into the fight, it’s important to understand what a CRA reassessment is. A reassessment is essentially the CRA’s way of saying “we reviewed your tax return again and made changes.” It usually comes in the form of a Notice of Reassessment, which shows adjustments to your income, deductions, credits, or taxes owed compared to your original Notice of Assessment. Reassessments can happen for several reasons – for example, the CRA might have found an error, received new information (such as slips you missed), or completed an audit of your file.
The key point is: a reassessment is not necessarily the final word. If you review the notice and disagree with the CRA’s changes, you have options to challenge or appeal the decision. In fact, the Canadian tax system provides a formal dispute process to ensure fairness.
Your Right to Dispute a CRA (Re)Assessment
If you think the CRA has misinterpreted facts or applied the law incorrectly on your assessment, you have the right to file an objection and get a second look. This applies to both original assessments and reassessments.
Fighting a CRA reassessment formally means going through defined steps: filing a Notice of Objection, having the case reviewed by the CRA’s Appeals division, and potentially appealing to the Tax Court of Canada (Tax Court). Don’t be intimidated by these steps. By law, the CRA must handle objections through a fair and impartial review separate from the initial audit team.
Below, we break down how to fight a CRA reassessment step by step. Following these steps will help you stay organized and improve your chances of a successful outcome.
Step 1: Stay Calm and Review the Reassessment Letter
The first step is simply to read the Notice of Reassessment carefully from start to finish. It might sound obvious, but when that envelope (or email) arrives, many people panic and skip straight to the amount owing. Instead, take a deep breath and focus on the details. Why did the CRA issue the reassessment? The notice will typically outline what changes were made to your return. Compare the reassessed figures to your original tax return line by line. Identify exactly which income item, deduction, credit, or calculation was adjusted.
As you review, ask yourself: Could this reassessment be correct? Sometimes CRA catches legitimate mistakes (like a missed T4 or an incorrect deduction claim). If, after reviewing, you realize the CRA is right, it may be best to accept the reassessment and move on. But if you still believe the CRA is wrong, or you don’t understand where their numbers are coming from, make note of those specific points of contention. These will be the focus of your dispute.
Step 2: File a Notice of Objection (Formal Dispute within 90 Days)
Filing a Notice of Objection is essential to fighting a CRA reassessment. An objection is a written notice to the CRA that says, “I disagree with this assessment, and here’s why.” Once you file an objection, the CRA’s Appeals Division will take over and conduct an independent review of your case, separate from the initial auditors. This is a critical step – it preserves your right to appeal further if needed and puts the dispute on official record.
Timing is crucial: In most cases you have 90 days from the date on the Notice of Reassessment to file your objection. If you miss the deadline, you can still apply for an extension within one year of the missed 90-day date, but you’ll need to explain why you were late, and there’s no guarantee the CRA will grant it. So, mark that deadline and act promptly.
To file the objection, you can use the CRA’s online services (via My Account or My Business Account) or mail a Form T400A (Notice of Objection). In your objection, clearly state which reassessment you are disputing, the amounts or items you disagree with, and why. Be as specific and factual as possible. Outline the facts and attach copies of any supporting documents that back up your position (for example, receipts, contracts, tax slips, correspondence – anything relevant to show the CRA’s adjustment is wrong). A well-prepared objection is vital because it forms the basis of your case going forward.
Writing an effective objection can be tricky. The wording and content matter more than you might think. In fact, anything you state in your objection could later be used as evidence if the case goes to Tax Court, so you want to avoid mistakes or admissions that could hurt your case. This is one reason many people seek help from a tax lawyer at this stage. An experienced tax lawyer can draft the objection letter in a way that protects your rights and presents the strongest argument on your behalf. They’ll cite relevant tax law or court cases if applicable and ensure all the key facts are included. While you are allowed to file an objection on your own, getting it professionally prepared can make a big difference – especially for complex disputes.
Once your objection is filed on time, the CRA should acknowledge receipt (usually with a letter). Now, your dispute moves on to the Appeals process for a closer review.
Step 3: Work With the CRA Appeals Officer During Review
After you file a Notice of Objection, your case will be assigned to a CRA Appeals Officer – a tax specialist whose job is to impartially review objections. This person was not involved in the original assessment, so you’re essentially getting a fresh pair of eyes on your tax situation. The Appeals officer will examine your tax return, the CRA’s reasons for reassessment, and the arguments/documents you submitted in your objection. They may contact you (or your representative) to discuss the case, request additional information, or clarify points. Be responsive and cooperative in these communications; this is your chance to further explain your side of the story and even negotiate if appropriate.
How long does this stage take? It can vary widely. Simple objections might be resolved in a few months, while complex ones can take a year or more. If you have new evidence or arguments that you didn’t include initially, you can usually submit additional written representations to the Appeals officer for consideration.
One encouraging fact: tax objections often succeed in whole or in part. According to the Auditor General of Canada, about 65% of objections result in the CRA reducing or even fully reversing the reassessed amount. In other words, the odds are not bad that the Appeals process will yield some relief for you – the reassessment could be adjusted in your favor. Many disputes are settled at this stage without ever going to Tax Court. The Appeals officer might agree with you after reviewing the facts, or they might propose a compromise (for example, allowing a deduction in part). If an agreement can be reached, the CRA will issue a new Notice of Reassessment reflecting the changes, and that’s the end of the dispute. Through negotiation and additional evidence, it’s often possible to resolve the issue in a way both you and the CRA can accept.
However, if the CRA Appeals Division disagrees with your objection, they will send you a Notice of Confirmation, which means they are upholding the original reassessment (no change). You might also get a partial win – a “Notice of Reassessment” that varies some things in your favor but not all. Either way, you’ll have a decision. If you are not satisfied with the outcome at this point, you still have one more fight in you: an appeal to the Tax Court.
Step 4: Consider an Appeal to the Tax Court (If Necessary)
If the CRA Appeals review doesn’t resolve the issue to your satisfaction, you have the right to appeal your case to the Tax Court. This is the first level of court in Canada’s tax dispute system. Going to court may sound daunting, but it exists precisely to adjudicate disputes between taxpayers and the CRA as a neutral arbiter. In fact, relatively few cases reach this stage – as noted, most disputes are settled before this – but it’s an important option if you firmly believe the CRA is wrong or if the amount at stake is significant.
Deadline: You must generally file a Notice of Appeal to the Tax Court within 90 days of the CRA’s final decision (the notice of confirmation or new reassessment from Appeals). If you miss that, you can apply to the Tax Court for an extension within one year, but again, missing deadlines is risky. Assuming you file on time, the Tax Court process begins.
In Tax Court, you (or your lawyer) will present your case to a judge, and the Department of Justice lawyers will represent the CRA. Both sides can submit evidence and arguments. The judge will then make an impartial decision. The burden is on the taxpayer to prove that the CRA’s assessment is wrong, so preparation is key. This usually means compiling a strong factual case and legal arguments. Winning in Tax Court can be challenging, but many taxpayers have succeeded, especially when there’s clear evidence or legal support for their position.
It’s highly recommended to have a tax litigation lawyer if you go to court. Court rules and the presentation of evidence can be complex. A seasoned tax lawyer will know how to frame the issues, comply with court procedures, and persuasively argue on your behalf. Keep in mind that even after filing an appeal, settlements can still happen. It’s not uncommon for the Department of Justice and the taxpayer (through their lawyer) to negotiate a deal before the case actually reaches trial – sometimes the pressure of impending court prompts a compromise. But if there is no settlement, the Tax Court will issue a judgment which both you and the CRA must abide by. There are further appeal levels beyond Tax Court – Federal Court of Appeal, even the Supreme Court – but very few cases go that far.
Conclusion: You Can Fight the CRA – and We Can Help
Facing a CRA reassessment can be intimidating, but remember that you have tools and rights to fight back if the CRA is wrong. By following the steps above – reviewing your notice, communicating with the CRA, filing a timely objection with solid grounds, and pursuing an appeal if needed – you stand a good chance of achieving a fair outcome. The process may require patience (and paperwork), but it exists to protect taxpayers from mistakes or overreach.
Throughout this journey, don’t hesitate to seek professional guidance. Tax law can be complex, and the stakes are high. Our team of experienced Canadian tax lawyers is here to help you fight a CRA reassessment at every stage – whether it’s drafting a convincing objection, negotiating with CRA appeals officers, or representing you in Tax Court. We deal with CRA disputes regularly and know how to navigate the system effectively. If you’ve received a CRA reassessment and aren’t sure what to do next, or if you’ve already filed an objection and need advice on how to proceed, reach out to us for a consultation.
