Marriage Contract Lawyer Toronto

A marriage contract — commonly known as a prenuptial agreement or ‘prenup’ — is one of the most valuable legal tools available to couples in Ontario. A well-drafted marriage contract is an act of clarity and planning: it sets out a process for separation and death.

At Soica & Associates, our marriage contract lawyers in Toronto help individuals and couples create clear, fair, and legally sound agreements that safeguard their interests without undermining their relationship.

What Is a Marriage Contract in Ontario?

A marriage contract is a written legal agreement entered into by two people either before or during their marriage that sets out how certain financial and property matters will be handled if the marriage ends — whether by separation and divorce, or death. In Ontario, marriage contracts are governed by Part IV of the Family Law Act. If properly drafted and executed, they are legally enforceable and can significantly alter the default property and support rules that would otherwise apply.

For common-law couples who plan to marry in the future, a cohabitation agreement can automatically convert into a marriage contract upon marriage.

What Can a Marriage Contract Cover?

Under Ontario’s Family Law Act, a marriage contract can address a wide range of financial and property matters:

• Property ownership and division on separation. The parties can agree on how specific assets will be treated if the relationship ends — including assets owned before marriage, inherited property, or business interests. This can override the default equalization rules under the Family Law Act.
• The matrimonial home. Parties can include provisions about the matrimonial home, including ownership and division. However, a marriage contract cannot restrict a spouse’s right to possession of the matrimonial home on separation or the requirement for the non-titled owner’s consent to sell or encumber the home.
• Spousal support. Parties can agree on the amount, duration, or a complete waiver of spousal support — subject to certain limits designed to prevent unconscionable outcomes.
• Management of property during the marriage. How specific assets will be managed, used, or disposed of during the marriage itself.
• Inheritance rights and estate planning. How property will be treated on the death of one spouse, including altering rights under the Succession Law Reform Act.
• Mandatory Wills. The parties can agree in a Marriage Contract that their wills will not be changed. Absent this, any spouse can change a will, at any time.

What a Marriage Contract Cannot Do in Ontario

• It cannot restrict a spouse’s right to possess the matrimonial home on separation
• It cannot include terms that are contrary to public policy
• It cannot restrict a child’s right to support — child support provisions will not be enforced
• It cannot provide for parenting time and decision-making responsibility for children
• Courts may set aside unconscionable spousal support waivers in appropriate circumstances

Requirements for a Valid and Enforceable Marriage Contract

A marriage contract in Ontario must meet the following requirements to be legally enforceable and to avoid a court setting it aside:

• In writing — a verbal prenuptial agreement is not enforceable as a marriage contract in Ontario
• Signed by both parties — both spouses must sign the document
• Witnessed — each signature must be witnessed
• Full financial disclosure — both parties must understand each other’s financial situation before signing. Inadequate disclosure is the most common basis on which marriage contracts are successfully challenged in court.
• Independent legal advice (ILA) — while not technically required for basic enforceability, the absence of ILA significantly increases the risk of a court setting aside the agreement. Each party should have their own lawyer review the agreement before signing.
• No duress or undue influence — a contract signed under pressure (for example, presented immediately before the wedding with no time to review) is highly vulnerable to challenge. Prenuptial agreements should be negotiated and finalized well in advance of the wedding date.

Why You Should Not Share a Lawyer

One lawyer cannot act for both parties to a marriage contract — this is a professional conflict of interest. More importantly, without independent advice, each party cannot be certain they understand what they are agreeing to and what rights they may be giving up. Courts are more likely to set aside an agreement where one party did not have independent legal advice, particularly where the agreement is financially one-sided.

When Should You Consider a Marriage Contract?

Marriage contracts are valuable in a wide range of circumstances, including:

• Second marriages. If you are entering a second marriage with children from a prior relationship, a marriage contract can ensure specific assets are preserved for those children.
• Significant asset disparities. Where one partner brings substantially more assets — a business, real estate, or investments — into the marriage, a contract protects those assets from automatic equalization.
• Business owners. Protecting a business from equalization is one of the most common reasons people seek a marriage contract. [Business Interests]
• Gifts and inheritances. A marriage contract can provide that gifts and inheritances remain separate property even if contributed to a matrimonial home.
• Different financial philosophies. Couples with different approaches to debt or financial risk can use a marriage contract to establish clear financial boundaries.
• Existing debt. A contract can protect one spouse from responsibility for the other’s pre-existing debts, subject to the rights of creditors.

Marriage Contract vs. Cohabitation Agreement

A marriage contract governs the financial relationship during and after marriage. A cohabitation agreement — which a prenuptial agreement lawyer in Toronto can also prepare — governs the same matters for cohabiting couples (not necessarily Common Law couples and automatically converts into a marriage contract if the parties later marry, unless the parties agree otherwise. If you are currently in a relationship and considering marriage, a cohabitation agreement is the appropriate starting point.

Can a Marriage Contract Be Changed or Challenged?

A marriage contract can be amended by mutual consent at any time — in writing, signed, and witnessed. Courts can also set aside or vary a marriage contract where it was signed without adequate financial disclosure, under duress or undue influence, or where a party did not understand the nature or consequences of the agreement. This is why proper process — with full disclosure and independent legal advice — is so important when the agreement is made.

Costs and Timelines

Timeline: A straightforward marriage contract can be finalized in 2–4 weeks when both parties are responsive.

Complex contracts (business interests, significant assets, international holdings): 4–10 weeks.

Legal costs: Typically $2,500–$3,500 per party for independent legal advice and drafting. More complex issues and more complex negotiations could be more.

→ The cost of a prenuptial agreement is a fraction of the cost of court representation.