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How Long Can Someone Sue an Executor in Ontario? The Limitation Period Explained

How long do you have to sue an Ontario executor for mishandling an estate? Learn the general two-year rule, discovery, and the separate six-month deadline.

Wills & Estates5 min readTSLBy the Treadstone Law team · OntarioUpdated 2026-07
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Key takeaways
  • Most civil claims in Ontario, including many claims against an estate trustee for breach of fiduciary duty or mismanagement, fall under the basic two-year limitation period set out in…
  • Because many estates are administered privately, with little disclosure to beneficiaries, a beneficiary may not become aware of a problem — a missing asset, an unauthorized payment, an…
  • A different type of claim — a dependant’s support claim under the Succession Law Reform Act, brought by someone the deceased was financially supporting who feels inadequately provided…

If you believe an estate trustee mishandled an estate — paid themselves too much, ignored your interests, or distributed assets improperly — you might assume you can raise it whenever you eventually find out. In Ontario, though, claims against an estate trustee are subject to a limitation period, and missing it can permanently bar an otherwise valid claim.

This article explains the general limitation rules that apply to different types of estate claims, and why the countdown doesn’t always start on the date of death.

The Basic Rule: Two Years From Discovery

Most civil claims in Ontario, including many claims against an estate trustee for breach of fiduciary duty or mismanagement, fall under the basic two-year limitation period set out in the Limitations Act, 2002. In general terms, the clock starts running from the day the claim is "discovered" — not necessarily the day of death or the day the conduct occurred.

Discovery Is Not Always Obvious

Because many estates are administered privately, with little disclosure to beneficiaries, a beneficiary may not become aware of a problem — a missing asset, an unauthorized payment, an undisclosed conflict of interest — until well after it happened. Exactly when a particular claim is legally "discovered" depends heavily on the specific facts, including what the beneficiary knew, when they reasonably should have known it, and what steps they took to find out. This is a fact-specific legal question, not a fixed formula, so it’s worth getting advice promptly once a concern arises rather than assuming time has already run out.

A Separate, Shorter Deadline: Dependant Support Claims

A different type of claim — a dependant’s support claim under the Succession Law Reform Act, brought by someone the deceased was financially supporting who feels inadequately provided for — has its own, much shorter limitation period: six months from the date a Certificate of Appointment of Estate Trustee is granted. As of writing, the court has discretion to allow a late application against any part of the estate that hasn’t yet been distributed, but this is not guaranteed — verify the current rule before relying on it, and note this is a distinct claim from a general allegation that the estate trustee mismanaged the estate.

Comparing the Two Deadlines

Type of claimGeneral limitation periodStarts running from
Breach of fiduciary duty / mismanagement by an estate trustee2 years (general Limitations Act rule)The date the claim is discovered
Dependant’s support claim under the SLRA6 months (court has discretion to extend for undistributed assets)The date the estate certificate is granted

These are two genuinely different legal claims, with different tests, different deadlines, and different starting points. Don’t assume the rule for one applies to the other.

Does a Passing of Accounts Change Anything?

Once an estate trustee’s accounts have been formally passed and approved by the court, or beneficiaries have signed a release after full disclosure, it becomes considerably harder to reopen matters that were disclosed and approved at that time. This is one practical reason estate trustees seek formal or informal sign-off from beneficiaries — it creates a clearer point of finality. It doesn’t necessarily protect against matters that weren’t disclosed at the time.

Frequently asked questions

Does the two-year clock start on the date of death?

Not necessarily. For many claims against an estate trustee, the clock starts when the claim is discovered, which can be later than the date of death, particularly where the estate trustee didn’t disclose relevant information promptly.

What if I only found out about a problem years after the estate was closed?

This depends heavily on when your claim is considered to have been legally discoverable, which is a fact-specific question. Speak with a lawyer promptly once you learn of a potential problem rather than assuming too much time has passed.

Is the six-month dependant support deadline the same as the two-year general limitation?

No. They’re separate rules for separate types of claims. A dependant’s support claim under the Succession Law Reform Act has its own six-month deadline from the grant of the estate certificate, while general claims about how the estate trustee managed the estate typically fall under the two-year Limitations Act rule.

Can I still bring a claim if the estate has already been fully distributed?

It becomes more difficult, and in some cases assets may no longer be reachable once fully distributed to beneficiaries who received them in good faith. This is another reason to act promptly once a concern arises rather than waiting.

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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