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Can a Separation Agreement Be Used for Divorce in Ontario?

Learn how a separation agreement fits into an uncontested divorce in Ontario, what it settles, what a court can still review, and what to do next.

Family Law4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 1, 2026
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Key takeaways
  • A separation agreement settles issues between you and your spouse, but only a court can officially end a marriage.
  • In a divorce the court treats your agreement on spousal support as a factor, not a binding limit.
  • The court must still be satisfied that reasonable arrangements have been made for any children's support before granting a divorce.

You have signed a separation agreement, or you are about to, and now you are wondering whether it is enough to end the marriage. Many people assume that a signed agreement and a divorce are the same thing. They are not, though the two work well together.

This article explains how an existing agreement fits into an uncontested divorce in Ontario, what the court still looks at, and what to check before you file.

Separation, agreement and divorce are different things

Separation happens when a couple decides to live apart because the relationship has broken down. It needs no court order and applies to married and common-law couples. A divorce is when a court officially ends a marriage, and only married couples can divorce.

A separation agreement is a type of domestic contract. It can be made by two people who lived together and are now living separate and apart, whether they were married or not. So the agreement deals with your rights and obligations, while the divorce ends the marriage itself.

How the agreement fits into an uncontested divorce

Marriage breakdown is established if you have lived separate and apart for at least one year. Resuming cohabitation for a period, or periods totalling, no more than 90 days with reconciliation as its primary purpose does not interrupt that separation period.

If no court case has started, your written settlement is called a Separation Agreement. If a case has started, it is called Minutes of Settlement. A joint divorce application on agreed terms uses Form 8A and is supported by Form 36 (Affidavit for Divorce).

What the court can still look at

An agreement is strong, but it does not take every decision away from the court. The rules differ depending on the topic.

TopicWhat the court can do
Child supportBefore granting a divorce, the court must be satisfied that reasonable arrangements have been made for the support of any children of the marriage. With both spouses' consent, it may accept an amount that differs from the guidelines if reasonable arrangements exist.
Spousal supportThe court considers any existing agreement about support, so it is a factor but does not bind the court.
ParentingIn a divorce, the court considers only the best interests of the child. It must include a parenting plan you submit in its parenting order, unless including it is not in the child's best interests, in which case the court may modify the plan.

Separately, under the Family Law Act, a court may set aside a support provision, or a waiver of the right to support, in a domestic contract even if the contract says otherwise. The grounds are that it results in unconscionable circumstances, that the person it benefits qualifies for support from public money, or that support payments under the contract are in default. How this applies to your divorce depends on your situation, so it is worth confirming with a lawyer.

Turning the agreement into an order, and other effects

In a divorce, the court may award child support that differs from the guidelines amount if both spouses consent and reasonable arrangements have been made for the child. It must not treat an arrangement as unreasonable solely because the agreed amount differs from the guidelines. If you want support enforced through the Family Responsibility Office, the agreement must first be 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.

An agreement also does not block a Canada Pension Plan credit split in Ontario. Only some agreements can do that, and Ontario is not among the listed provinces.

What to do next

A lawyer can confirm how your agreement should be presented in the divorce and whether anything in it is likely to be questioned.

Frequently asked questions

Does a separation agreement mean I am divorced?

No. Separation needs no court order, and only a court can officially end a marriage. You would still need to apply for a divorce.

Do I have to wait a year to divorce if we already have an agreement?

Generally, marriage breakdown is established when spouses have lived separate and apart for at least one year. A short attempt to reconcile, totalling no more than 90 days, does not interrupt the period.

Can the judge change what we agreed on?

Sometimes. In a divorce, the court considers only the child's best interests on parenting matters and may modify a parenting plan that is not in the child's best interests. It treats a spousal support agreement as a factor only. How this applies to other terms depends on the facts, so it is worth confirming with a lawyer.

What is the difference between a separation agreement and minutes of settlement?

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

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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