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Family Arbitration in Ontario: How It Differs From Mediation

Learn how family arbitration works in Ontario, whether the decision is binding, and how it differs from mediation, including legal advice and screening rules.

Family Law4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 6, 2026
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Key takeaways
  • Mediation helps you reach your own agreement, while arbitration produces a decision made by an arbitrator.
  • A family arbitration award is enforceable only if the agreement is in writing and each party received independent legal advice.
  • An award based on religious principles is not a valid family arbitration award.

If you and your spouse want to stay out of a courtroom, you may have heard of both mediation and arbitration. They sound similar, but they work very differently, and the difference matters when you are deciding which path suits your situation.

This article explains in plain language what each process involves, when an arbitration decision can be enforced, and what protections Ontario puts around the process. It is general information, not advice on your own case.

Mediation: you make the decisions

Ontario describes mediation as a negotiation between two people with help from a mediator. The mediator does not take sides, make decisions or give legal advice, and does not take the place of a lawyer.

The mediator screens the parties at intake and throughout the process to make sure both are in an equal negotiating position. At the end, the mediator writes up what the parties agreed. To make it legally binding, Ontario advises that each party get advice from a different lawyer before signing.

Court-connected mediators must have 60 hours of family mediation training and 21 hours of intimate partner violence education or training, including screening for intimate partner violence. Court-connected on-site mediation is free on the day a party's matter is scheduled in court, while off-site mediation may carry user fees on a scale based on income and number of dependents.

If you are divorcing, the Divorce Act says that, to the extent that it is appropriate, parties must try to resolve the matters through a family dispute resolution process, which it defines as a process outside court such as negotiation, mediation and collaborative law. A legal adviser must encourage this unless the circumstances of the case, such as family violence, make it clearly inappropriate.

Arbitration: someone else decides

In arbitration, you and your spouse agree to have a neutral person, the arbitrator, decide the dispute instead of a judge. The key difference from mediation is that the arbitrator makes the decision, rather than helping you reach one yourselves.

A family arbitration award is enforceable only if the arbitration agreement is in writing and complies with the regulations, each party receives independent legal advice before making the agreement, and the requirements of the Arbitration Act, 1991 are met.

PointMediationArbitration
Who decidesYou and your spouseThe arbitrator
Mediator or arbitrator gives legal adviceNo, the mediator does notNot covered here; ask a lawyer
Legal advice neededAdvised before signing the written agreementRequired for the award to be enforceable

Rules that protect you

A separation agreement or other domestic contract is unenforceable unless it is made in writing, signed by the parties and witnessed. A court may set aside a domestic contract or a provision in it on application, including where a party failed to disclose significant assets or did not understand the nature or consequences of the contract.

Enforcing or challenging an award

A party entitled to enforcement may apply to the court. Support provisions can be filed using Form 26D with the Superior Court of Justice or the Family Court, together with the legal advice certificates and the arbitration agreement. Awards cannot be enforced unless both sides received legal advice.

A party may appeal to the court on a question of law with leave, and parties cannot contract out of this right. An appeal or an application to set aside must be started within 30 days after the party receives the award.

Mixing the two (med-arb) and what to do next

Some people consider combining mediation and arbitration. The Arbitration Act, 1991 says members of an arbitral tribunal must not conduct any part of the arbitration as a mediation or conciliation process that might compromise their ability to decide impartially. How a combined process is set up depends on the agreement, so have a lawyer review it.

Family Law Information Centres at family courts give free court forms and general information about procedure, and they provide information about mediation and referrals. Their staff give information, not legal advice. Low-income people may get free legal advice at court from Legal Aid Ontario advice lawyers and duty counsel.

Frequently asked questions

Is a family arbitration decision binding?

It can be enforced if the agreement is in writing, each party received independent legal advice, and the Arbitration Act, 1991 requirements are met. A party may still appeal on a question of law with leave.

Can we arbitrate before a dispute even arises, such as in a marriage contract?

An agreement to arbitrate a family dispute is unenforceable unless it is entered into after the dispute has arisen.

Can a religious tribunal decide our family dispute?

An award based on religious principles is not a valid family arbitration award, and the court can only enforce arbitration that follows Canadian law.

Does a mediator give legal advice?

No. The mediator does not take sides, make decisions or give legal advice, and does not replace a lawyer.

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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