The Terminology Question
"Postnuptial agreement" is a term often used, particularly in American media and some other jurisdictions, to describe an agreement spouses enter into during their marriage (as opposed to before it). Ontario family law generally doesn't use this specific term as a distinct legal category.
What Ontario Law Actually Calls This
Under Ontario's Family Law Act, a marriage contract is generally defined broadly enough to cover agreements entered into either before or during a marriage — there's generally no separate legal category or different set of rules specifically for an agreement signed after the wedding versus before it. What some people call a "postnuptial agreement" is, in Ontario, generally just a marriage contract.
Why the Term "Postnuptial" Still Comes Up
The term still shows up in everyday conversation and online searches because it's a familiar, intuitive way to describe the timing of the agreement — even though it doesn't map onto a distinct Ontario legal category. If you're searching for information about an agreement to sign during your marriage, the relevant Ontario-specific guide is generally the one on marriage contracts.
What This Kind of Agreement Can Generally Cover
Regardless of the terminology, a marriage contract signed during a marriage can generally address the same kinds of issues as one signed before marriage — property division, spousal support, and other financial matters — and is generally subject to the same formal requirements and the same kinds of considerations around disclosure and fairness discussed in our guide to what can make a marriage contract invalid.
Frequently Asked Questions
Is there a separate legal process for a "postnuptial agreement" in Ontario?
No. Ontario's Family Law Act generally treats agreements made before or during a marriage under the same category — marriage contracts — without a separate legal process for agreements signed after the wedding.
Can spouses sign a marriage contract after they're already married?
Yes, generally — a marriage contract under the Family Law Act can generally be entered into either before or during the marriage.
Does timing (before vs. during marriage) change what the agreement can cover?
Generally not in terms of subject matter — both can generally address similar issues like property and support, subject to the same general legal requirements.
Why do people still search for "postnuptial agreement Ontario"?
Because the term is familiar from other contexts, even though Ontario law generally uses the single category of "marriage contract" regardless of timing.
Does a marriage contract signed years into a marriage need the same disclosure as one signed before the wedding?
Generally, yes — full and honest financial disclosure is generally important to a marriage contract's validity regardless of when during the relationship it's signed.