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Contested Probate Applications in Ontario: When More Than One Person Applies

What happens when two family members both apply to be estate trustee for the same Ontario estate, and how the Superior Court of Justice sorts it out.

Wills & Estates6 min readTSLBy the Treadstone Law team · OntarioUpdated 2026-07
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Key takeaways
  • A contested application usually arises in one of a few situations: - The will names an executor, but someone else believes that person is unsuitable — for example, due to a conflict of…
  • Where there's no will, or where the named executor cannot or will not act, the Estates Act sets out a statutory order of priority for who is entitled to apply to be appointed estate trustee.
  • When more than one person applies, or when someone challenges a proposed appointment, the court's focus is on who can best administer the estate properly and in the interests of all…

Most probate applications are uneventful — one person applies, the court reviews the paperwork, and a certificate is issued. Occasionally, though, more than one family member believes they should be the one appointed, and more than one application ends up before the same court for the same estate. This is more disruptive, more expensive, and slower than a straightforward application — but it's also a situation Ontario's estate law is built to resolve.

Why Competing Applications Happen

A contested application usually arises in one of a few situations:

How Ontario Decides Who Applies First — The Order of Priority

Where there's no will, or where the named executor cannot or will not act, the Estates Act sets out a statutory order of priority for who is entitled to apply to be appointed estate trustee. This priority order exists precisely because disputes like this are foreseeable — it gives the court a starting framework rather than leaving the question entirely open-ended.

Even with a priority order in place, priority is not an absolute guarantee of appointment. The court retains the ability to look past the strict order where there's a good reason to — for example, real concerns about a proposed trustee's suitability, conflicts of interest, or capacity to properly administer the estate.

What the Court Actually Looks At

When more than one person applies, or when someone challenges a proposed appointment, the court's focus is on who can best administer the estate properly and in the interests of all beneficiaries — not on who "deserves" the role or who the deceased was closest to emotionally. Relevant considerations commonly include:

The Procedural Path for a Contested Application

Ontario's Rules of Civil Procedure set out how contested estate matters — including competing applications and challenges to a proposed estate trustee — move through the Superior Court of Justice, generally under a different, more formal procedural track than an uncontested application follows. This typically involves:

  1. Formal notice to interested parties, so that beneficiaries and other people with a stake in the estate are aware a contest is underway.
  2. An opportunity to file evidence, since the court is deciding a genuine dispute rather than simply confirming paperwork.
  3. A hearing, where the court considers the competing positions before deciding who should be appointed — sometimes as an interim trustee while the underlying issues are resolved, and sometimes as the final appointment.

Interim measures while a dispute plays out

Because an estate often needs someone with authority to act — paying bills, protecting assets, dealing with time-sensitive matters — while a contest over the permanent appointment is unresolved, the court can appoint an estate trustee on a temporary or limited basis in the meantime. This keeps the estate from being left in limbo purely because family members disagree about the long-term appointment.

Costs and Delay Are the Real Downside

A contested application takes meaningfully longer than an uncontested one, and it can be considerably more expensive — legal fees on both sides, court time, and the practical cost of an estate sitting unadministered while the dispute plays out. In some cases, the court can order that legal costs of the dispute be paid out of the estate itself, which reduces what ultimately reaches the beneficiaries regardless of who "wins" the application.

Ways to Avoid a Contested Application in the First Place

Frequently asked questions

Can a beneficiary who isn't applying to be estate trustee still object to someone else's application?

Yes. A beneficiary with a genuine interest in the estate can raise concerns about a proposed estate trustee's suitability, even without applying to be appointed themselves.

What happens to the estate while a contested application is being resolved?

The court can appoint someone on an interim or limited basis to handle urgent matters — protecting assets, paying pressing bills — while the underlying dispute over the permanent appointment is worked out.

Does naming an executor in a will completely prevent a contested application?

It significantly reduces the likelihood, but it doesn't guarantee it. Someone can still challenge a named executor's suitability to act, though courts generally give real weight to the deceased's own choice as expressed in a valid will.

Is a contested probate application the same as challenging the will itself?

No, though the two can overlap. A contest over who should be appointed estate trustee is about who administers the estate; a challenge to the will's validity is a separate question about whether the document itself should be treated as the deceased's true final wishes at all.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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