Prenuptial Agreement and Marriage Contract Lawyer in Ontario

Clear and Practical Advice About Child Support in Toronto

A marriage contract may be made before or during marriage. It can define how property, support, debts, business interests, and other financial matters will be treated during the marriage, on separation, on divorce, or on death.

At Englobe Law, the first focus is to identify the issues the agreement must address, obtain the required financial information, and prepare terms that are clear, workable, and suited to the parties’ circumstances.

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“Prenuptial agreement” or “prenup” is the commonly used term for an agreement made in contemplation of marriage. Ontario’s Family Law Act uses the term “marriage contract.” Two people who are married or intend to marry may enter into one.

A marriage contract may establish the parties’ rights and obligations during the marriage, on separation, on the annulment or dissolution of the marriage, or on death. A cohabitation agreement between unmarried partners becomes a marriage contract if they later marry.


A marriage contract is not required for every couple. It may be appropriate where the ordinary operation of family law does not reflect how the parties intend to organize their financial affairs.

The issues commonly arise where:


Depending on the matter, a marriage contract may address:

Ontario law permits spouses to address property, support, and other matters concerning the settlement of their affairs.

The provisions must be considered together. A property waiver may affect support. A business provision may require valuation, tax, corporate, or estate-planning advice. Terms drafted for present circumstances should also account for foreseeable changes.


A marriage contract cannot finally determine every family law issue. It cannot limit a spouse’s rights under Part II of the Family Law Act concerning the matrimonial home. It also cannot determine decision-making responsibility or parenting time in advance. Child-related provisions remain subject to the best interests of the child and the child-support guidelines.

Spousal-support terms may be included, but a court retains authority to set aside or override a support provision in specified circumstances.


A domestic contract is unenforceable unless it is in writing, signed by both parties, and witnessed. Those formal requirements are only part of the analysis.

A court may set aside all or part of a marriage contract where a party failed to disclose significant assets, debts, or liabilities existing when the agreement was made; where a party did not understand its nature or consequences; or on other grounds available under contract law.

Complete financial disclosure and independent legal advice therefore have practical importance. Each party should understand the rights being preserved, changed, or waived. The agreement should also be negotiated and signed without undue pressure, particularly where a wedding date is approaching. Independent legal advice may also help demonstrate that the process was informed and fair if the agreement is later challenged.


Englobe Law advises on:

The scope of the work depends on what has already been resolved, whether disclosure is complete, and whether the agreement involves straightforward property or more complex financial interests.


A template cannot determine whether proposed terms fit the parties’ rights, assets, and objectives. Common problems include incomplete disclosure, inconsistent definitions, unclear treatment of future property, provisions that conflict with Ontario law, and terms that do not address the events most likely to create a dispute.

A lawyer can identify the rights that would otherwise apply, explain the proposed changes, organize disclosure, and draft terms that operate together. Each party should receive advice from a different lawyer before signing.


Englobe Law LLP is a boutique firm with offices in Downtown Toronto and North York. Elham Beygi leads the family law group. She advises on domestic contracts with a focus on careful financial review, precise drafting, and terms that reflect the parties’ actual circumstances.


The cost of a marriage contract depends principally on the work required.

The main cost factors are:

Efficiency begins with defining the intended outcome and collecting disclosure early. Starting well before the wedding date also allows each party time to obtain advice and make considered decisions.


Discuss a Marriage Contract

Englobe Law LLP advises on marriage contracts, prenuptial agreements, independent legal advice, financial disclosure, and related family law matters from offices in Downtown Toronto and North York.


Do I need a lawyer for a prenuptial agreement in Ontario?

A lawyer is not one of the statutory formalities. Each party should nevertheless obtain independent advice from a different lawyer to understand the rights being changed or waived and the consequences of signing.

It may be enforceable if it meets the statutory requirements and is not later set aside. Proper execution does not cure significant non-disclosure, lack of understanding, or another legal basis for setting aside the agreement.

A prenup may address property, equalization, debts, spousal support, businesses, investments, financial arrangements, and certain rights arising on death. Statutory limits apply to matrimonial-home and child-related provisions.

Yes. A party may ask the court to set aside all or part of the agreement. The result depends on the facts, including disclosure, understanding, the negotiation and signing process, and the terms in dispute.

There is no single cost. A review-only retainer differs from drafting and negotiating a complete agreement. Cost depends on disclosure, asset complexity, disputed terms, revisions, and any additional professional advice required.

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