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Marriage Contract in Ontario

A marriage contract in Ontario is a written agreement spouses (or people intending to marry) can use to set clear financial terms during marriage and if the marriage ends or a spouse dies. Ontario’s Family Law Act permits marriage contracts that address property, support obligations, and other settlement terms.

If you are looking for a marriage contract lawyer in Toronto or a marriage contract lawyer in Ontario, Family Law Helps can draft a marriage contract in Ontario or review a marriage contract Ontario clients already have, with a focus on clarity, disclosure, and enforceability.

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What Is a Marriage Contract in Ontario?

Ontario law allows two people who are married (or intend to marry) to enter into a marriage contract that can cover:

  • ownership in or division of property
  • support obligations
  • the right to direct the education and moral training of children (but not decision-making responsibility or parenting time)
  • other matters in settling their affairs

A marriage contract can be signed:

  • before marriage (often called a prenup Ontario couples sign), or
  • after marriage (often called a postnup Ontario spouses sign).
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Why Choose Family Law Helps for Marriage Contracts?


Drafting Aligned with Ontario Family Law

We draft with the statutory requirements and limits in mind, so the agreement matches what Ontario law allows a marriage contract to do.

Clear Language, Practical Terms

A marriage contract should be readable and workable. We focus on direct drafting that reduces future disputes.

Disclosure-Focused Approach

Ontario law permits a court to set aside a domestic contract (or a clause) in specific situations, including significant non-disclosure or lack of understanding of the contract’s nature or consequences.

Proper Execution Support

A domestic contract is generally unenforceable unless it is in writing, signed by the parties, and witnessed. We guide execution so technical errors do not undermine the agreement.

Our Marriage Contract Services Include

  • Drafting a custom marriage contract Ontario clients can rely on (prenup or postnup)
  • Reviewing and revising an existing agreement (including agreements drafted elsewhere)
  • Clauses addressing:
    • premarital and marital assets
    • treatment of real estate (within legal limits)
    • debts and liabilities
    • business interests and professional assets
    • marriage contract spousal support Ontario terms (where appropriate)
    • planning terms tied to separation or death (financial settlement terms)
  • Execution guidance (writing, signatures, witness)
  • Enforceability risk review (disclosure, clarity, and signing issues)

What is a marriage contract in Ontario?

A marriage contract is a written agreement between spouses (or people intending to marry) that can address property, support obligations, and other settlement matters under Ontario’s Family Law Act.

What is the difference between a prenup and a marriage contract?

“Prenup” is a common term. In Ontario law, it is typically structured as a marriage contract signed before marriage (a postnup is the same type of agreement signed after marriage).

When should we sign a marriage contract?

Many couples sign before marriage (prenup) or after a major life change (postnup), such as buying property, starting a business, or major changes to income or debts.

What makes a marriage contract vulnerable to challenge?

Common risk areas include weak disclosure, unclear drafting, and improper signing. Ontario law also sets out grounds for setting aside domestic contracts, including significant non-disclosure or lack of understanding.

Can we change or cancel a marriage contract later?

Yes, but any amendment or rescission should be done properly and follow the same enforceability formalities (written, signed, witnessed).

Family Law Helps is Happy to Provide

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Contact
Natalia Denchik

13025 Yonge Street, Unit #201E,
Richmond Hill, ON
L4E 1A4

Fax: 416-900-5168

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