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Mandatory Mediation in Ontario Estate Disputes: Toronto, Ottawa, Essex

How Rule 75.1 mandatory mediation works for estate, trust and substitute-decision lawsuits in Toronto, Ottawa and Essex, and what to prepare.

Wills & Estates5 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • Rule 75.1 mandatory mediation covers certain estate, trust and substitute-decision lawsuits in Toronto, Ottawa and Windsor (Essex), unless the court grants an exemption.
  • The person who started the proceeding must file a motion for directions within 30 days after the deadline for filing a Notice of Appearance.
  • The directions order decides who attends, who has carriage of the mediation and how its cost is shared.
  • Each party must give the mediator and the others a Statement of Issues at least seven days before the session.

If an estate dispute is heading to court in Toronto, Ottawa or Windsor, you may find that the court expects you to try mediation before the case goes much further. That can come as a surprise to people who thought a dispute over a will, a trustee or a power of attorney would go straight to a judge.

This article explains in plain terms how mandatory mediation under Rule 75.1 works, the deadlines that apply, who may need to be told about the process, and what you can prepare while the steps unfold. It is general information, and the details of your case matter, so a lawyer should confirm how the rules apply to you.

What mandatory mediation is and where it applies

Rule 75.1 requires mediation in certain estate, trust and substitute-decision lawsuits. It applies in Toronto, Ottawa and Windsor (Essex), unless the court grants an exemption.

Mediation is a structured meeting where a neutral person, the mediator, helps the parties talk through the issues and look for a settlement. The mediator does not decide who is right. If the dispute does not settle, the court case generally carries on.

Whether your particular lawsuit falls within the rule, and whether an exemption is realistic, depends on the type of claim and the facts. That is worth confirming early with a lawyer.

The steps and deadlines

The process runs on short timelines. The table below sets out the main steps described by Ontario.

StepWhat happensTiming
Notice of AppearanceParties file a Notice of Appearance (Form 75.4)Filing deadline set by the rules
Motion for directionsThe person who started the proceeding files a motion for directions (Form 75.6)Within 30 days after the Notice of Appearance deadline
Choosing a mediatorParties agree on a mediatorWithin 30 days of the directions order
If no agreementThe responsible party asks the local mediation coordinator to assign a mediator (Form 75.1A)After the 30 days pass without a choice
Notice of sessionThe mediator notifies attendees of the time and placeAt least 20 days ahead
Statement of IssuesEach party gives the mediator and others a Statement of Issues (Form 75.1C)At least seven days before

Because the first deadline runs from a date set by the court process, it is easy to lose track of it. Mark each date as soon as you know it.

The directions order

The directions order is the document that shapes the mediation. It sets which parties must attend, who has carriage of the mediation, and how the mediation cost is shared.

Directions proceedings under rule 75.06 use a Notice of Application for Directions (Form 75.5) or a Notice of Motion for Directions (Form 75.6), both stating the grounds as rule 75.06. An order giving directions is in Form 75.8 or 75.9.

Read the order carefully when you receive it. If you are unsure whether someone should be attending, or you have concerns about how the cost is divided, raise it with a lawyer promptly rather than waiting until the session.

Children and incapable beneficiaries

Many estate disputes involve people who cannot speak for themselves in court. The Office of the Children's Lawyer must be served on behalf of a child in applications that may affect a child's interest, such as will interpretation, will challenges and trustee removal. It should also be served when there is an unborn or unascertained interest in an estate or trust.

For notice of an estate trustee application, notice goes to the guardian or attorney of a mentally incapable beneficiary, or to the Public Guardian and Trustee if there is no guardian or attorney with authority in the proceeding. For a minor, notice goes to a parent or guardian and to the Children's Lawyer.

If you are involved in a dispute where a child or incapable adult may have an interest, ask a lawyer who needs to be notified. Missing a required party can slow the case down.

What to prepare

Mediation goes better when you arrive knowing what you want and what you can prove. The Statement of Issues is due early, so start gathering material as soon as the directions order is made.

What to do next

Start with the dates. Write down the Notice of Appearance deadline, the 30-day motion for directions deadline, and the 30-day period to choose a mediator.

Frequently asked questions

Do I have to mediate if I am in Hamilton or London?

Rule 75.1 mandatory mediation applies in Toronto, Ottawa and Windsor (Essex). Whether other options are available elsewhere depends on your court and your case, so a lawyer can confirm.

Who pays for the mediation?

The directions order sets how the mediation cost is shared. It is not automatically split in a fixed way, so check the order that applies to your case.

Can I get out of mandatory mediation?

The rule applies unless the court grants an exemption. Whether an exemption is likely depends on the facts, and a lawyer can advise on whether to ask for one.

What if we cannot agree on a mediator?

If the parties do not choose a mediator within 30 days of the directions order, the responsible party asks the local mediation coordinator to assign one using Form 75.1A.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

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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