The situation
Kasia worked as an air traffic controller, a job with rotating shifts that left little room for anything unpredictable. When her mother passed away, she was named executor of the estate — the person legally responsible for gathering the assets, paying the debts and taxes, and distributing what remained to the beneficiaries. Her sister Heather, a sales director, was named a co-beneficiary along with their sister Beth, and both were counting on their share to arrive within a reasonable time.
Their mother's estate was straightforward on its face. She had lived in a house in Caledon for over twenty years, and for the final six years of her life she had also owned a small second property, a modest bungalow in a nearby town that she bought after Kasia's father passed, intending to eventually downsize into it. She never did. She kept living in the Caledon house and rented the bungalow out for most of that period, though she used it herself for several months in one of the later years while the Caledon house underwent renovations. Both properties were sold by the estate within about a year of her death, as Kasia worked through the administration. On the estate's final tax filings, the accountant Kasia hired claimed the principal residence exemption — the provision in the Income Tax Act that shelters some or all of the capital gain on a home a person actually lived in — covering the Caledon house for the full period of ownership and the bungalow for the months it had been used personally.
The legal problem
About fourteen months after the returns were filed, the Canada Revenue Agency opened an audit of the estate. The auditor's position was that a taxpayer can only designate one property as a principal residence for any given year, and that the estate's filings had, in effect, tried to claim the exemption for both the Caledon house and the bungalow in the same overlapping years — years in which the mother technically owned both properties, even though she had only lived in the bungalow for a handful of months. The auditor disallowed the exemption on the bungalow for the years it overlapped with the Caledon house designation and reassessed the estate for the resulting capital gain, along with several years of accrued interest. The total reassessment came to just over $260,000 in tax and interest combined.
The estate had already distributed most of its funds to Kasia, Heather and Beth by the time the reassessment arrived, on the accountant's advice that the filings were complete and the risk of a future assessment was low. That left Kasia, as executor, in a genuinely difficult position: an executor who distributes estate assets without accounting for a known or reasonably foreseeable tax liability can be held personally liable for the shortfall. The distributions here had happened before the reassessment existed, which mattered for how exposed Kasia personally was, but it did not make the estate's underlying tax problem disappear. Someone still had to answer for whether the reassessment itself was correct, and the clock on doing anything about it was already running — a taxpayer generally has ninety days from the date of a notice of reassessment to file a notice of objection, the formal written disagreement that triggers a review by the CRA's appeals division, and that window does not pause for grief, estate administration, or anything else.
What we did
- Filed the notice of objection well inside the ninety-day window. We did not wait to build the full evidentiary case before filing. The objection was submitted promptly with a preliminary statement of the estate's position, preserving Kasia's right to a full appeals review while the supporting record was assembled.
- Reconstructed the actual timeline of occupation, not the assumed one. The auditor's file treated the bungalow as a rental for its entire ownership period except for a loosely stated few months. We went back through utility records, a change-of-address notice on file with a government agency, and the renovation contract for the Caledon house to pin down precise dates: the bungalow was the mother's only home for a period of just over five months while the Caledon house was uninhabitable, and it was legitimately rented out for the remainder.
- Applied the principal residence rules to the correct years, not the calendar years the audit had assumed. The exemption is calculated by tax year, and an ownership year in which a property changes from rental use to personal use, or back, can sometimes be split or designated in a way the audit had not considered. We reworked the designation so the bungalow's exemption was claimed only for the specific year in which the personal-use months actually fell, rather than being denied across every overlapping year.
- Argued that no overlapping double claim had occurred. Once the years were corrected, the estate was not claiming the exemption for both properties in the same year at all — the Caledon house was designated as the principal residence for every year except the single year of the renovation, when the designation shifted to the bungalow for the months it was actually occupied. This matched exactly how the rule is meant to work.
- Addressed Kasia's personal exposure as executor directly with the CRA. Separately from the merits of the reassessment, we confirmed in writing that the distributions to Heather and Beth had occurred before any reassessment existed and before the estate had reasonable grounds to expect one, which mattered to limiting any argument that Kasia had distributed assets in the face of a known liability.
- Escalated to a CRA appeals officer and provided a full supporting package. When the file moved from objection intake to a case officer, we submitted the reconstructed timeline, the corrected exemption calculation, and copies of the underlying records, and followed up through the officer directly rather than leaving the file to sit in a general queue.
The outcome
The appeals officer accepted the corrected timeline and the revised principal residence designation. The reassessment was vacated in full — the roughly $260,000 in tax and interest the CRA had assessed against the estate was reversed, and the file was closed on the basis that the exemption had been properly claimed once the ownership years were matched to the actual periods of personal use. The process took a little over a year from the notice of objection to the final decision, which is a fairly typical timeline for an estate matter that requires the appeals division to work through historical occupancy evidence rather than a simple documentation gap.
Because the reassessment was reversed rather than reduced, no repayment plan or personal contribution from Kasia, Heather or Beth was ever needed. Kasia's personal exposure as executor never became a live issue, since the underlying estate liability turned out not to exist once the correct facts were before the CRA. The distributions already made to the beneficiaries stood without any need to claw funds back.
What you can learn from this
- A person can generally only designate one property as their principal residence for a given tax year, but the rules allow a mid-year switch when a property's use genuinely changes from personal to rental or back. An audit that assumes a strict calendar-year overlap without checking the actual dates of occupation can be wrong.
- The deadline to file a notice of objection against a CRA reassessment is generally ninety days from the date on the notice, and it does not extend for the practical difficulties of administering an estate. File the objection to preserve the right to a full review, then build the supporting evidence afterward if needed.
- An executor who distributes estate assets is not automatically personally liable for a tax reassessment that arrives afterward, but the timing and reasonableness of what was known at the time of distribution matters. Document the basis for distributing before a liability was known or foreseeable.
- Records that establish exactly when a property changed from a rental to a personal residence — utility accounts, address changes, renovation contracts — can be the difference between an exemption being allowed or denied. Keep them, especially for a second property that changed use during an estate's ownership.
- A CRA audit's version of the facts is a starting point, not the final word. Bringing precise, documented dates to the appeals stage can shift a reassessment's outcome entirely, even when the CRA's initial position seemed well established.
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