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Mediation to Reach a Separation Agreement in Ontario

See how family mediation works in Ontario, what a mediator does, and how a mediated deal becomes a binding separation agreement you can enforce.

Family Law5 min readTSLBy the Treadstone Law Team · OntarioUpdated November 1, 2026
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Key takeaways
  • A mediator helps you negotiate your own agreement but does not make decisions, take sides or give legal advice.
  • Before signing a mediated agreement, each party should get advice from a different lawyer, although you do not need a lawyer to make a separation agreement.
  • The final agreement must still be in writing, signed and witnessed to be enforceable.

If you and your spouse cannot agree on parenting, support or property, mediation can be a way to talk it through without a judge deciding for you. Many people are unsure what happens in a session and whether anything agreed there actually counts.

This article explains how family mediation works in Ontario and how a mediated deal becomes a binding separation agreement.

What a family mediator does

In family mediation, a neutral mediator helps the parties negotiate their own agreement. The mediator does not make decisions, take sides or give legal advice.

In divorce proceedings, resolving disputes outside court is also encouraged by law. Under the Divorce Act, where appropriate, the parties must try to resolve matters through a family dispute resolution process, and legal advisers must encourage clients to do so unless it would clearly not be appropriate.

A separation agreement is not limited to married couples. Two people who lived together and are now living separate and apart may make a separation agreement, whether they were married or not. Separation itself needs no court order and applies to married and common-law couples, while only married couples can divorce.

The name of the written settlement depends on timing. If no court case has started, it is called a Separation Agreement. If a case has started, it is called Minutes of Settlement.

Court-connected and private mediation

Court-connected family mediation is provided by service providers under contract with the Ministry of the Attorney General. On-site mediation is free on the day the matter is scheduled in court. Off-site mediation fees may be charged on a scale based on income and number of dependants. Availability, fees and scales vary by courthouse and provider, so check locally.

Mediators screen for domestic violence at intake and throughout the process. If safety is a concern, tell the mediator early and talk to a lawyer about whether mediation suits your situation.

Preparing so mediation can work

Agreements are only as sound as the information behind them. Financial disclosure means giving the other party information and documents about your income, expenses, assets and debts. A court may set aside an agreement if, for example, a party failed to disclose significant assets or debts, or did not understand the nature or consequences of the contract. Even then, the court decides whether it is appropriate to set the agreement aside, and fairness is a relevant consideration at that stage.

The Court of Appeal for Ontario has said financial disclosure is a paramount consideration, and that the spouse who holds the assets is responsible for disclosing and valuing them. In court, disclosure is done on a financial statement: Form 13 for support-only cases, and Form 13.1 where property or debts are in issue. Some cases, such as certain child support cases where only the table amount is claimed, do not need one. A mediator may ask for different documents, so ask what they want before the first session.

How a mediated deal becomes binding

Reaching a deal in the room is not the end. Before signing a mediated agreement, each party should get advice from a different lawyer. A domestic contract is unenforceable unless it is in writing, signed by the parties and witnessed.

You do not need a lawyer to make a separation agreement, but legal advice before signing is a good idea because it can be difficult to get a court to set an agreement aside. Spouses can divide property any way they agree, and the agreement cannot easily be changed later.

Ontario guidance also says each person should understand the terms and not be pressured to sign. Take the draft home and review it before you sign. If you later need to change it, an amending agreement must also be in writing, signed and witnessed.

Some terms stay open to review. A court may disregard a provision about parenting time or decision-making responsibility if that is in the child's best interests, and it may disregard a child support provision that is unreasonable having regard to the child support guidelines. A court may also set aside a support provision or a waiver of spousal support, even if the contract says otherwise, where it results in unconscionable circumstances, the person it benefits qualifies for support from public money, or payments under the contract are in default.

What to do next

Frequently asked questions

Is what we agree to in mediation automatically binding?

Not by itself. The agreement must be in writing, signed by the parties and witnessed to be enforceable. Before signing, each party should get advice from a different lawyer, although you do not need a lawyer to make a separation agreement.

Does the mediator give legal advice?

No. The mediator is neutral, does not make decisions or take sides, and does not give legal advice.

Is mediation free in Ontario?

On-site court mediation is free on the day the matter is scheduled in court, while off-site mediation fees may be charged on a scale based on income and number of dependants. Details vary by courthouse and provider.

Can the Family Responsibility Office enforce a mediated agreement?

It can enforce the support terms once the agreement is filed with the Ontario Court of Justice or the Family Court of the Superior Court of Justice and then registered with the Family Responsibility Office. It enforces only the support provisions, and a recipient may instead go to court to enforce the agreement directly.

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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