Illustrative example based on the kinds of matters we handle — not a specific client engagement; outcomes depend on the facts.
The situation
A mid-sized private corporation — we will call it the company — ran an established operating business with an outside accountant. After a CRA audit reaching back across several taxation years, it received a multi-year reassessment bundling together a number of unrelated adjustments:
- a block of expenses denied as personal-in-nature or insufficiently documented;
- a sum added back as an alleged shareholder benefit;
- a dispute over the timing of certain income; and
- gross negligence penalties, with arrears interest compounding across every year reassessed.
Taken together, the demand ran well into the six figures. The directors were rattled — it rivalled a strong year of profit, and the penalties made it feel like an accusation rather than a calculation.
The challenge
A multi-year corporate reassessment is rarely a single fight. It is several smaller fights stapled together, each with its own evidence, legal test, and a strict clock:
- The burden of proof. On a reassessment the CRA's assumptions are presumed correct, and the taxpayer must displace them issue by issue — each adjustment answered with records that tie a number to a transaction.
- A hard deadline. A corporation generally has 90 days from the reassessment to file a Notice of Objection. Missing it converts a right into a request for an extension — a far weaker position.
- One year looked statute-barred. An earlier year fell outside the normal reassessment period, which the CRA could only reach by alleging a misrepresentation from neglect, carelessness, or wilful default. See our overview of statute-barred reassessments.
- The penalties raised the stakes. Gross negligence penalties under subsection 163(2) require the CRA to meet a higher standard, but make a file feel adversarial from the first letter.
How we approached it
The first step is the one clients tell us matters most: explaining, in plain terms, that a reassessment is the CRA's opening position — not a settled debt — then setting out a written strategy that triaged the issues. Some adjustments were strong; some were weak; a few were not worth the cost of fighting. Sorting them honestly is what made the objection credible.
- Filed in time and framed every issue, preserving the appeal rights across all reassessed years so nothing was waived.
- Rebuilt the documentary record. Working alongside the company's accountant, we reconstructed support for the denied expenses, traced the alleged shareholder benefit back to its actual character, and assembled the contemporaneous records the original return assumed it would never need.
- Met the statute-barred year head-on, because the CRA carries the burden of justifying a reassessment beyond the normal period, treating that year as a distinct argument.
- Treated the penalties as their own fight. A good-faith filing position the CRA disputes is not the conduct a gross negligence penalty requires the Crown to establish.
- Worked the Appeals stage directly. The objection is decided by the CRA's Appeals Division — an officer independent of the auditor, often where an over-reaching audit is narrowed. We dealt with that officer on the company's behalf, with a Tax Court of Canada appeal held in reserve.
This kind of matter begins at the audit and reassessment stage; our guides cover filing a Notice of Objection, the CRA audit process, and the defence to a 163(2) penalty.
The outcome
In matters of this kind, the result tracks the evidence, issue by issue. Where contemporaneous records genuinely supported a deduction, the denied expense can be restored. Where the alleged shareholder benefit had an innocent explanation, the add-back can fall away; where part was real, the outcome lands in between. Because the CRA must justify both a reassessment beyond the normal period and a gross negligence penalty to a higher standard, a statute-barred year and its penalties can be vacated even when some adjustment on the open years survives. What can happen at the Appeals stage is that most of the disputed issues are resolved, the assessment is materially reduced, penalties are reduced or removed, and the balance becomes manageable — sometimes through a payment arrangement that relieves collections pressure. None of that is assured, and a minority of issues may still need a Tax Court appeal — but many objections never reach a courtroom.
We do not promise figures. The point is that a large, multi-year reassessment is not the final word, and the objection process gives a corporation real tools to test it.
The takeaway
- A multi-year reassessment is several disputes bundled into one notice. Triage them — concede the weak points, fight the strong ones — rather than attacking the whole figure as one number.
- The 90-day objection deadline is strict, and the Appeals Division is an independent second look where over-reaching audits are frequently narrowed before any litigation.
- A year reassessed beyond the normal period and any gross negligence penalty both shift a burden onto the CRA — and that can drive a meaningful part of the result.
- The strongest position is built from contemporaneous records that connect each adjustment to a real transaction.
The path from audit through objection to a Tax Court appeal is a defined process. For background, see what makes a tax appeal succeed and the role of evidence and burden of proof.
Results vary. Every tax matter turns on its own facts, evidence, and procedural posture, and nothing here is a prediction or assurance of any particular outcome. This is general information, not legal advice.