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The Mediation CentreStage iii · Preparing

How do we prepare for mediation?

Exchange complete financial disclosure, get advice from your own lawyer on what the law would likely give you, and go in with goals rather than positions. An agreement built on missing numbers can be set aside later under section 56(4) of the Family Law Act.

Full financial disclosure comes first

Nothing useful can be negotiated until both of you are looking at the same numbers. Ontario law backs that up: section 56(4) of the Family Law Act lets a court set aside a domestic contract if a party failed to disclose significant assets, debts or other liabilities that existed when it was made, and that rule applies despite anything the contract says. An agreement mediated on incomplete disclosure is an agreement with a crack in it.

The practical standard is the court's own. Rule 13 of the Family Law Rules requires a sworn financial statement, Form 13 for support claims and Form 13.1 where property is involved, whenever a case involves support or property. Most mediators ask for the same forms or an equivalent, so use them; if the file ever goes to court, the work is already done.

The intake meeting and the agreement to mediate

Before any joint session the mediator meets each of you alone. This is intake and screening: the mediator learns the issues, checks for family violence and power imbalance, and explains how the process will run. Be candid. What you say in intake shapes whether joint sessions are safe and how they are structured.

Then you sign an agreement to mediate. It records that the mediation is closed or open, what the mediator may report, that the mediator gives no legal advice, whether lawyers may attend, the fee and how it is split, and what ends the process. Read it with your lawyer. It is a contract, and it governs everything said in the room.

Know your legal position before you negotiate

A mediator will not tell you what the law would give you; that is the one thing they are not allowed to do. Without that knowledge you are negotiating blind. A consultation with your own lawyer before the first session covers the questions that drive the deal: how equalization would likely come out, what the Child Support Guidelines table amount is on each income, whether spousal support is in play and roughly for how long, and what a court would probably do about the home.

You are not bound by any of it. Mediation lets you agree to something different from the legal default, and many couples do. But you should know what you are giving up or gaining, and your lawyer will need to confirm at the end that you understood.

Set goals, not positions

A position is 'I keep the house'. A goal is 'the children stay in their school and I am not carrying debt I cannot manage'. Mediators work with goals because there are usually several ways to meet one, and a position leaves only yes or no. Before the first session, write down what matters most to you about the children, money and the next two years, and what you think matters most to your spouse.

Bring the practical facts too: work schedules, the school calendar, the mortgage renewal date, who is on which benefits plan. The sessions move faster when the small facts are already known, and the small facts are where most parenting schedules are actually built.

Getting the children's needs on the table

Under both the Divorce Act and the Children's Law Reform Act, any parenting arrangement is judged on the child's best interests, with primary consideration to the child's physical, emotional and psychological safety, security and well-being. Mediators apply the same lens. Prepare by thinking about each child's needs, routines, health, schooling and relationships, not about what is fair between the adults.

Some mediators offer child-inclusive mediation, where a trained specialist meets the children and brings their views into the process without asking them to choose. If you want that, raise it at intake. And decide early whether you will tell the children mediation is happening; a shared script from both parents is usually kinder than two versions.

Your steps

Complete the disclosure checklistGather tax returns, statements at separation and marriage dates, property and pension documents, and children's expenses.
Fill in a financial statementForm 13 or 13.1, or the mediator's equivalent. Sworn is better; it is what a court would require anyway.
Exchange copies and note gapsYour lawyer reviews your spouse's disclosure and lists what is missing before numbers are discussed.
Get advice on your legal positionEqualization, the table amount of child support, spousal support range, the home. Know the default before you vary it.
Attend intake and sign the agreement to mediateSeparate meetings first, then the contract that sets confidentiality, fees and reporting.
Write your goals and the practical factsWhat matters most for the children and your finances; schedules, dates and benefits already in place.

Who's involved

Family mediator

Runs intake and screening, sets disclosure expectations and drafts the agreement to mediate.

Your lawyer

Reviews both sides' disclosure, advises on your legal position and reads the agreement to mediate.

Financial professional

Values a business or pension, or works out income for support, when statements alone do not answer the question.

Child specialist

Meets the children if you choose child-inclusive mediation and reports their views to both parents.

Documents you will need

Financial statement (Form 13 or 13.1)Three years of tax returns and Notices of AssessmentBank, investment and pension statements at separation and marriage datesMortgage statement and property appraisalAgreement to mediateChildren's expense receiptsWritten list of goals and practical facts

Questions people ask

Do we have to use the court's financial statement forms for mediation?

No rule requires it, but most mediators ask for Form 13 or 13.1 or something equivalent, and using the court forms means nothing is wasted if you later need to file. The forms also force both of you through the same categories, which is what disclosure is for.

What if my spouse's disclosure is incomplete?

Say so, in writing, before any numbers are negotiated. A mediator can ask for the missing documents but cannot compel them. If they never come, that is a sign mediation is the wrong process; a court can order disclosure and draw inferences against the spouse who withholds it.

Should I get legal advice before the first session or wait until the end?

Before. Ontario's guidance says to get independent legal advice before and throughout mediation. Advice at the end only tells you whether to sign; advice at the start tells you what to negotiate for.

Will the mediator see our children?

Only if you both agree and the mediator or an associated specialist is trained to do it. The Family Law Act allows a mediator to confer with the children where appropriate. The children are not asked to choose; their views are gathered and shared with both parents.

How much does preparation reduce the number of sessions?

Considerably, in our experience. Mediators generally report that sessions spent chasing documents are the sessions that make mediation expensive. Complete disclosure and a clear list of goals mean the first joint session can start on the actual issues.

Sources

General information about Ontario law as of 5 September 2026, not legal advice. It does not create a lawyer–client relationship.

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