Executive summary: Key legal and evidentiary issues

• Dionne Smith's application to extend the time for filing a notice of objection to a denied new housing rebate under section 254 of the Excise Tax Act was quashed for lack of jurisdiction.

• The Minister denied Ms. Smith's extension request by letter dated March 8, 2024, triggering a strict 30-day deadline to apply to the Tax Court of Canada.

• Ms. Smith filed her application with the Court on October 22, 2025 — nineteen months after the 30-day deadline had expired, failing a critical condition precedent under subsection 304(1).

• The Court emphasized it has no power to waive or modify statutory conditions precedent, and jurisdiction cannot be acquired by consent or mistake.

• Ms. Smith's frustration stemmed from receiving no guidance on deadlines from Canada Revenue Agency officials and a six-day delay in her initial application to the Minister.

• Even on the merits, the Court noted Ms. Smith's argument that the notice of assessment was misdelivered to a neighbouring unit would have failed, as the assessment was properly addressed.

The facts of the case

Dionne Smith claimed a new housing rebate under section 254 of the Excise Tax Act. The Minister of National Revenue assessed Ms. Smith on May 12, 2022, denying the rebate she had claimed. Under the statutory framework, Ms. Smith was required to file a notice of objection with the Minister within 90 days of the date the notice of assessment was sent. She did not do so within the prescribed period. Ms. Smith resided in unit #310 of her building, and the notice of assessment was properly addressed to that unit. However, Ms. Smith later speculated that Canada Post must have delivered her notice of assessment to the neighbouring unit #311 by mistake. Unit #311 was rented out to tenants until the owner returned in November 2022. Ms. Smith claimed she only received the assessment when the owner of unit #311 handed her an envelope containing the notice of assessment at that time.

The application to the Minister and the missed deadline

Ms. Smith eventually applied to the Minister for an extension of time to file her notice of objection, but this application was itself filed six days late. By letter dated March 8, 2024, the Minister notified Ms. Smith that her application for an extension of time to object had been denied. That letter contained specific instructions advising her that she could appeal to the Tax Court of Canada within 30 days of the mailing date if she disagreed with the decision. Ms. Smith did not file her application with the Tax Court until October 22, 2025 — nineteen months after the March 8, 2024 denial letter was sent.

The statutory framework and conditions precedent

The Court, relying on the framework set out by Justice Graham in Amador v The King, 2025 TCC 143, explained that there are seven tests — three conditions precedent and four conditions — that govern applications for extensions of time to object under the Excise Tax Act. The three conditions precedent under subsection 304(1) require that: (a) the taxpayer must first have applied to the Minister under section 303 for an extension; (b) either the Minister must have refused that application or 90 days must have passed without a decision; and (c) if the Minister refused, the taxpayer must have brought their application to the Court within 30 days of the date the Minister mailed the notification of denial. The Court stressed that it has no power to waive or change any of these conditions precedent, and if a taxpayer fails to meet any one of them, the application must be quashed.

The Court's analysis of jurisdiction

The pivotal issue was whether the Court had jurisdiction to hear Ms. Smith's application at all. Since the Minister's denial letter was dated and mailed on March 8, 2024, Ms. Smith was required to file her application with the Tax Court within thirty days of that date. Her filing on October 22, 2025 was well outside the 30-day window mandated by the concluding words of subsection 304(1). The Court noted that Ms. Smith had not credibly asserted that the Minister's letter of March 8, 2024 was not mailed to her on that date. Consequently, the third condition precedent was not satisfied, and the Court lacked jurisdiction to entertain the application. The Court further observed that jurisdiction cannot be gained by consent or mistake, citing L.I.U.N.A. Local 527 Members' Training Trust Fund v. The Queen.

Ms. Smith's frustration and the mailing argument

Ms. Smith expressed frustration that she had spoken with several officials at the Canada Revenue Agency over the phone and no one told her about any deadlines. She also contended that the objection deadline should run from November 2022, when she says the owner of the apartment next door handed her the notice of assessment. However, the Court found that the notice of assessment was properly addressed to her unit (#310) and that she had not credibly asserted that the notice of assessment was not sent to her on May 12, 2022. Even had the Court possessed jurisdiction, this argument on the merits would not have succeeded.

The ruling and outcome

The Honourable Justice David E. Spiro, presiding at the Tax Court of Canada in Toronto on April 13, 2026, quashed Ms. Smith's application without costs. The Respondent, His Majesty the King, was the successful party. Because the application was quashed on jurisdictional grounds rather than decided on the merits, no monetary award or specific amount was at issue in the judgment. The Court simply could not proceed further once it determined it lacked jurisdiction, leaving Ms. Smith without a remedy through this avenue.