Marriage Contracts in Ontario: 5 Tips for an Effective 'Prenup.'
Protect your assets without killing the romance. Learn how a Marriage Contract can secure your business, your inheritance, and your pre‑marriage home.
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Legal Review: This contract guide was reviewed by Deepa Tailor, Senior Family Lawyer, to ensure compliance with Section 52 of the Family Law Act regarding domestic contracts.
The Quick Answer: What Can a Marriage Contract Do?
A Marriage Contract (often called a Prenup) allows couples to 'opt-out' of the standard property division rules in Ontario. It is primarily used to protect pre‑marriage assets, business interests, and inheritances from being shared upon divorce. However, a Marriage Contract CANNOT determine Child Custody or Child Support rights, and it CANNOT limit a spouse's right to live in the Matrimonial Home.
Top Reasons to Sign a Contract
Pre-Owned Home.
If you bring a home into the marriage and it becomes the family home, you lose your deduction credit unless you have a contract.
Business Assets.
Without a contract, the increase in your business’s value during marriage is shared. A contract keeps it separate.
Pre-Existing Debt.
Protect yourself from taking on your partner’s student loans or credit card debt accumulated before marriage.
The "Matrimonial Home" Trap
The Problem
The Matrimonial Home is treated differently than all other assets in Ontario. Normally, if you owned property before the marriage, you get a "deduction" for its value on the date of marriage when calculating Net Family Property. BUT, if that specific house becomes the family home, the deduction is lost, and the full value is split 50/50 upon divorce. This is a unique rule under Part IV of the Family Law Act that catches many homeowners off guard.
The Solution
A Marriage Contract is the only way to fix this. You can write a clause stating: "If we divorce, I get the down payment back first," or "The house remains excluded property." Without this contract, the default rule under the Family Law Act applies automatically, and your pre‑marriage equity is shared.
How to Ensure It Holds Up in Court
Full Financial Disclosure
You must list everything (assets, debts, income). Hiding a bank account voids the contract.
Independent Legal Advice (ILA)
Both parties MUST have their own lawyer. One lawyer cannot represent both.
No Duress
Do not sign it the day before the wedding. Courts view this as pressure. Sign it months in advance.
Fairness
While it doesn’t have to be 50/50, it cannot be “unconscionable” (grossly unfair).
Prenup FAQs
Yes. It is called a “Post-Nuptial Agreement,” but it follows the exact same legal rules as a pre-nuptial agreement.
Deepa Tailor
Senior Family Lawyer
Deepa Tailor drafts durable marriage contracts that protect pre‑acquired assets and business interests, ensuring her clients enter marriage with financial peace of mind.
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