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Who Pays Legal Costs in Ontario Family Court? Costs and Offers

Learn when Ontario family courts order one side to pay the other's legal costs under rule 24, and how a written offer to settle can change the result.

Family Law5 min readTSLBy the Treadstone Law Team · OntarioUpdated November 6, 2026
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Key takeaways
  • The general rule is that a successful party is presumed to be entitled to the costs of a step in the case, with several exceptions.
  • A properly made written offer to settle can lead to full recovery of costs from the date it was served, but only if strict conditions are met.
  • Judges generally see offers only after they have decided the issues, except at a binding judicial dispute resolution (JDR) hearing.

Family court can be expensive, and many people worry about being ordered to pay the other side's legal bills. Costs are the court's way of deciding who bears some of the money spent on a step in the case, and the rules are more detailed than most people expect.

This article explains how costs work under the Ontario Family Law Rules, when the usual rule changes, and how a written offer to settle can affect the result. The costs consequences of offers are set out in rule 24(12) and (13). Older guides may describe earlier versions of the rules, so it is worth confirming that what you are reading is current.

The starting point: the winner is presumed to get costs

Under Family Law Rules r. 24(3), there is a presumption that a successful party is entitled to the costs of a step in a case. The court decides costs promptly after each step, or reserves them for later.

A presumption is a starting point, not a guarantee. A judge can depart from it, and whether costs are owed is a separate question from how much they will be.

When the usual rule changes

Because these exceptions turn on the facts of each step, it is worth getting advice on how they might apply to your situation.

How the judge sets the amount

In setting the amount, the court may consider the reasonableness and proportionality of each party's behaviour, the time spent, any written offers (including offers that do not meet r. 24(12)), legal fees and rates, expert fees and other properly paid expenses. All of this is weighed against the importance and complexity of the issues, along with any other relevant matter.

Claims for fees and expenses must be backed by satisfactory documentation under r. 24(15) and (16). In practice, that means keeping invoices, receipts and time records.

Before each step, the parties must also confer about costs, or make their best efforts to do so. This does not apply where a court order prohibits it or there is a risk of domestic violence.

Written offers to settle and costs

An offer to settle must be signed personally by the party making it and by their licensed representative. Making, withdrawing, accepting and rejecting offers carry the costs consequences set out in rule 24.

Judges generally do not see offers until after they have decided the issues. The exception is a binding judicial dispute resolution (JDR) hearing.

When an offer leads to full recovery of costs

Under r. 24(12), a party who made an offer is entitled to costs up to the date the offer was served, and full recovery of costs from that date, if all of the following apply:

The party claiming this benefit has the burden of proving that the order is as good as or better than the offer. Even an offer that misses one of these conditions can still be considered by the judge when setting the amount of costs.

What to do next

A lawyer can look at your court, the type of step and the offers already made, and explain how costs may play out.

Frequently asked questions

Does the winner always get their legal costs in Ontario family court?

No. There is a presumption that a successful party is entitled to the costs of a step, but the court may apportion costs if success is divided, or reduce them if the winner behaved unreasonably. In child protection cases the presumption does not apply.

What happens if someone acts in bad faith?

The court must decide costs on a full recovery basis, and those costs are payable immediately.

Will the judge know about my settlement offer during the case?

Generally not. Except at a binding JDR hearing, the judge sees the parties' offers only after deciding the issues.

How do I accept an offer to settle?

The only valid way is to serve an acceptance on the party who made the offer. You cannot accept it after the court begins to give a decision, and the other side can withdraw it by serving a notice of withdrawal before you accept.

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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