Missed Objection Deadline, Corporate Tax Bill Averted in Kingston

The situation

Heather had run her construction project management consulting corporation out of Kingston for close to a decade, contracting her services to residential and commercial builders across the region. Her spouse, Oksana, worked as a pharmacist, and between the two of them the household finances were stable and well organized on paper. The corporation's books were handled by an outside accountant, Taras, who prepared the annual corporate tax return and filed the HST returns each quarter.

In the spring, the corporation was selected for a CRA audit covering two prior tax years. The auditor focused on payments the corporation had made to subcontractors and the input tax credits, the HST paid on business purchases that a registrant can deduct from the HST it collects, claimed on those payments. Several months later, a Notice of Reassessment arrived by mail, disallowing a large share of the claimed input tax credits and reclassifying a portion of the subcontractor payments as not properly documented business expenses. Combined with arrears interest and penalties, the reassessment put roughly $310,000 in dispute.

The letter landed during a difficult stretch. Oksana had just changed jobs and Heather was mid-project on a large commercial build, and the reassessment sat in a stack of mail for several weeks before anyone looked at it closely. Taras assumed Heather had already flagged it for action; Heather assumed Taras was handling the response as part of his usual bookkeeping work. Neither followed up with the other. By the time Heather called Treadstone Law, the 90-day period to file a Notice of Objection, the formal written challenge that puts a reassessment in front of a CRA appeals officer, had already expired.

What the review found

Under the Income Tax Act and the Excise Tax Act, which governs HST, a taxpayer who disagrees with a reassessment generally has 90 days from the date on the notice to file a Notice of Objection. Once that window closes without an objection on file, the reassessment stands as issued, and CRA is free to treat the amount as a debt owed. The income tax and HST portions of the reassessment did not behave the same way while the dispute sat unresolved: filing an objection to an income tax reassessment generally suspends CRA's collection action on that amount while the objection is under review, but that protection does not extend to HST. Assessed GST/HST remains payable immediately even with an objection outstanding, so the HST portion of Heather's exposure kept accruing regardless of where the objection stood. For a corporation, that debt does not necessarily stay a corporate problem indefinitely, either. A director can be held personally liable for a corporation's unremitted HST net tax under the Excise Tax Act, but only once CRA has tried and failed to collect from the corporation itself, and only subject to a due-diligence defence and a two-year limitation running from when a person last served as director. Heather, as the sole director, faced that exposure on the HST portion of the reassessment if the corporation could not pay and the objection ultimately failed.

The first task was establishing exactly how much time had actually run. CRA calculates the 90-day period from the date printed on the Notice of Reassessment, not the date it is opened or read, so the team confirmed the mailing date and counted forward. The deadline had passed by a matter of weeks, which mattered a great deal: both statutes allow a taxpayer to apply for an extension of time to object, but only within one year after the original 90-day period ends. Miss that outer window too, and the options left are far more limited, expensive, and uncertain, with no guarantee that the merits of the reassessment itself would ever be reargued.

An extension request is not granted automatically. CRA, and the Tax Court of Canada if the request is later appealed there, will only grant one where the taxpayer can show a genuine intention to object that existed within the original 90 days, a reasonable explanation for the delay, and that the request itself was made as soon as circumstances allowed. A vague explanation like 'we were busy' is not enough. The explanation has to be specific and documented, and the substance of the objection has to be ready to go, because CRA wants to see that granting the extension will lead to a real review, not simply more delay.

What we did

1. Confirmed the deadline had lapsed and how much runway remained. Counting forward from the mailing date on the Notice of Reassessment showed the 90-day window had closed a few weeks earlier, but the case was still well inside the one-year outer limit for an extension request. Establishing this early mattered because it determined whether there was still a viable path back into the dispute at all, or whether the reassessment was already final and the only remaining options were far more limited and expensive.
2. Documented the specific reason for the delay. A vague claim of being busy would not satisfy CRA's test, so the explanation centred on the actual breakdown in communication between the corporation's bookkeeping support and its director during a period when both were stretched thin. Dated correspondence and calendar records were assembled to show the notice had been misfiled through a genuine mix-up, not deliberately set aside, which is exactly the kind of documented, specific account an extension request needs to succeed.
3. Prepared and filed the application for an extension of time to object together with the substantive Notice of Objection itself. Filing both at once, rather than waiting for the extension to be granted before drafting the objection, demonstrated to CRA that a completed, genuine challenge was ready to proceed immediately rather than a placeholder request that might simply buy more delay without any real review behind it.
4. Rebuilt the documentary record for the disputed input tax credits and subcontractor payments. This meant collecting contracts, invoices, proof of electronic payment, and correspondence with each subcontractor to show the expenses were legitimate, incurred for business purposes, and properly supported under the record-keeping requirements of the Excise Tax Act. Without this record intact, even a granted extension would have led nowhere on the merits.
5. Corresponded directly with the CRA officer assigned to review the extension request, providing additional context on request and confirming the corporation's ongoing compliance with its other filing obligations. This reduced any concern on the officer's part that the missed deadline reflected a broader pattern of neglect rather than an isolated, well-explained lapse, which strengthened the case for granting the extension rather than refusing it.
6. Once the extension was granted, pursued the objection through CRA's Appeals division, presenting the rebuilt documentation directly to the appeals officer and addressing the specific line items the auditor had flagged, subcontractor by subcontractor and credit by credit, rather than arguing the reassessment in general terms that would have left the strongest evidence unconnected to the weakest points in the auditor's original position.

The outcome

CRA granted the extension of time, accepting that the delay was a documented lapse rather than a deliberate decision to ignore the reassessment, and that a genuine objection had been ready within the relevant window. That alone did not resolve anything on its own, it simply reopened the door that had appeared to be closed.

The objection itself was allowed in full several months later. The appeals officer accepted that the subcontractor payments were properly documented business expenses and that the input tax credits had been correctly claimed, and the reassessment was vacated. The roughly $310,000 that had been sitting on the corporation's account, made up of about $215,000 in reassessed tax, about $65,000 in arrears interest, and about $30,000 in penalties, was reversed in full and never became a debt the corporation, or Heather personally as director, had to pay.

Because the extension was secured before CRA moved to collections, no collection letters were sent, no lien or garnishment was registered, and no separate director liability assessment was ever issued against Heather personally for the HST portion. Had the missed deadline gone uncorrected, that personal exposure would not have simply disappeared once the corporation ran out of assets to pay from. The corporation's line of credit and its relationships with its bank and its subcontractors were untouched throughout, since none of them had reason to know a six-figure dispute was in progress. What could have become a forced sale of assets, a personal liability fight, or a strained relationship with lenders was instead resolved as a paperwork dispute — a missed deadline that was corrected and reversed before it hardened into a final, unappealable bill, rather than a problem that never happened at all.

What you can learn from this