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Annulment in Ontario: Property, Support and Children

Compare annulment and divorce in Ontario: how equalization, spousal support and child support work, and what stays uncertain after a marriage is annulled.

Family Law6 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • Equalization, spousal support and child support are well-defined for divorce, and each has its own rules.
  • Whether those same remedies apply after a marriage is annulled depends on the facts and should be confirmed with a lawyer.
  • Before granting a divorce, a court must be satisfied that reasonable arrangements have been made for the support of any children of the marriage.
  • Do not assume time limits are more generous after an annulment, because property claims have firm deadlines in the divorce setting.

If your marriage is annulled, you may wonder what happens to the house, the savings, the children and any ongoing support. With divorce, the answers are fairly well known. With annulment, which says the marriage was not valid, the questions are less settled and are easy to get wrong.

This article explains how the main money and children rules work in a divorce setting, then identifies the points where an annulment could change things. Because the effect of annulment on these remedies depends on the facts, treat this as a way to prepare questions for a lawyer.

Annulment versus divorce in one view

A divorce ends a marriage that was valid. A court can grant one when the marriage has broken down, for example after the spouses have lived separate and apart for at least one year. An annulment is about whether the marriage was valid in the first place. Ontario applies English annulment law as it stood on 15 July 1870, so far as it can be applied, and the Civil Marriage Act sets out basics such as free and enlightened consent, a minimum age of 16, and no prior undissolved marriage.

IssueUnder a divorceAfter an annulment
PropertyEqualization compares net family property growth, and the spouse with the larger increase pays half the differenceDepends on the facts; confirm with a lawyer
Spousal supportDivorce Act s. 15.2(1) lets the court order itDepends on the facts; confirm with a lawyer
Child supportDivorce Act s. 15.1(1) lets the court order itDepends on the facts; confirm with a lawyer

Property: how equalization works in a divorce setting

In Ontario, equalization compares each spouse's net family property at separation with the net family property at the date of marriage. The spouse with the larger net increase pays half the difference to the other. Property owned at separation is valued as of the separation date, and property owned at marriage is valued as of the wedding date.

Several points often matter:

Equalization is described by the Ontario government as part of what happens when a marriage or common law relationship ends. Whether and how it applies to a marriage that a court declares was never valid depends on the facts and is worth confirming with a lawyer.

Spousal and child support

Under the Divorce Act, a court may order child support (s. 15.1(1)) and spousal support (s. 15.2(1)). A spousal support order should recognize economic advantages or disadvantages to the spouses arising from the marriage or its breakdown. In plain terms, the court looks at who gave up income or career opportunities and who gained.

Children are treated differently from spouses. Before granting a divorce, the court must be satisfied that reasonable arrangements have been made for the support of any children of the marriage. How a claim is brought, and under which statute, depends on your circumstances and is worth confirming with a lawyer.

Whether spousal support is available after an annulment is a point that depends on the facts, so avoid assuming either that it is automatic or that it is barred.

Deadlines, pensions and costs to keep in mind

For property claims in the divorce setting, you must go to court within six years from the day you separated or two years from the day your divorce is final, whichever comes first. How this applies after an annulment depends on your situation, so it is worth confirming with a lawyer. If you are considering a property claim, get advice early.

Pensions can be a large part of the value. The government advises asking the pension administrator for the pension's value. Under the Pension Benefits Act, since 2012 the former spouse's equalization share is limited to 50% of the Family Law Value, and the administrator prepares a Statement of Family Law Value. If the member has not retired on the valuation date, the administrator can only pay the spouse a lump sum, which must go to a locked-in account such as a LIRA or LIF. Whether these pension rules reach someone whose marriage was annulled is another point to confirm.

On costs, the successful party in a family case is presumed to get costs, but the court can deprive a successful party of costs if that party behaved unreasonably. Late financial disclosure is an example of conduct that can reduce a costs award.

What to do next

Whether you pursue annulment or divorce, protect your financial position while you get advice.

Frequently asked questions

Does equalization apply if my marriage is annulled?

Equalization is described as part of what happens when a marriage or common law relationship ends. Whether it applies to a marriage declared never valid depends on the facts, so a lawyer should confirm it for you.

Can I still get child support after an annulment?

Under the Divorce Act a court can order child support, and a divorce court must be satisfied that reasonable arrangements exist for children. How this works after an annulment depends on your situation, so ask a lawyer how an order would be sought.

Is spousal support available after an annulment?

That depends on the facts. For divorces, the Divorce Act lets a court order spousal support and says it should recognize economic advantages or disadvantages from the marriage or its breakdown. A lawyer can tell you whether a similar claim is available in your case.

Is there a deadline for a property claim?

In the divorce setting, you must go to court within six years from separation or two years from the day your divorce is final, whichever comes first. How this applies after an annulment depends on your situation, so it is worth confirming with 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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