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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Family Law & Divorce Ontario » Marriage Contracts & Prenups Ontario » Using a Prenup to Keep Corporate Dividends Out of Net Family Property in Ontario

Using a Prenup to Keep Corporate Dividends Out of Net Family Property in Ontario

13 Jun 2026 4 min read No comments Marriage Contracts & Prenups Ontario
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To protect your Ontario business, your marriage contract must explicitly exclude both the corporate shares and the passive income or dividends it generates. Without exact legal wording, dividends paid out during the marriage may be added to your Net Family Property, potentially costing you hundreds of thousands of dollars upon separation.

Operating a successful corporation in Ontario is a massive achievement. Whether you run a rapidly growing tech startup in Waterloo, a retail chain in Ottawa, or a consulting firm in Toronto, protecting your life’s work and your financial stability is a top priority when getting married.

Under the Family Law Act, the value of property acquired, or the increase in value of property brought into the marriage, must generally be divided equally upon separation. While many business owners know to exclude their core corporate shares in a marriage contract (prenup), they often forget a critical detail: the corporate dividends and passive income. Omitting this specific language is one of the most expensive legal mistakes an entrepreneur can make. 📝

Step-by-Step Process in Ontario

Ensuring your corporate income is entirely shielded from a future equalization payment requires surgical precision from an experienced commercial and family lawyer. Standard, boilerplate contract templates will not protect a complex business.

Step 1: Independent Business Valuation

Before drafting the contract, you must establish the exact baseline value of your corporation on the date of marriage. Hiring an independent Chartered Business Valuator (CBV) is absolutely crucial. 📊

Guessing the value of your business or using rough accounting estimates leaves the entire marriage contract vulnerable. If your spouse’s lawyer can later prove you intentionally undervalued the business during financial disclosure, an Ontario judge can throw the entire contract out.

Step 2: Drafting the Primary Exclusion Clause

Your law firm will draft a primary exclusion clause that explicitly removes your shares in the corporation from your Net Family Property (NFP). 🗂️

This foundational clause ensures that if the business grows from an initial valuation of $1 million to $5 million during the marriage, your spouse is not legally entitled to half of that $4 million growth if you separate.

Step 3: Securing the Dividend Exemption

This is the most vital step. Section 4(2) of the Family Law Act specifically states that income generated from excluded property is not excluded unless the contract specifically says so. 💰

Your lawyer must include a precise, unmistakable clause stating that all dividends, capital gains, interest, and passive income generated by the business during the marriage are entirely excluded from the NFP. Without this exact wording, a $500,000 dividend payout sitting in your bank account on the date of separation will be split 50/50.

Step 4: Managing Commingled Funds

Even with a perfect contract, how you behave during the marriage matters. If you take excluded corporate dividends and use them to pay off the mortgage on your primary family residence, those funds instantly lose their legal protection. 🏠

In Ontario, the “matrimonial home” is treated uniquely. Regardless of who paid for it, its value is almost always split equally. You must work with your accountant to ensure excluded dividends are deposited into separate, distinct accounts and not commingled with family expenses.

Step 5: Obtaining Independent Legal Advice (ILA)

For a judge at the Superior Court of Justice to uphold a contract that heavily favours one spouse’s business, the other spouse must fully understand what they are giving up. ⚖️

They must obtain Independent Legal Advice (ILA) from their own lawyer, who will explain the massive financial implications of waiving their right to corporate growth and dividends. A signed certificate of ILA proves the contract was entered into fairly and without coercion.

How Much Does it Cost in Ontario?

Protecting a lucrative corporation requires sophisticated legal and financial advice. Skipping these steps to save a few thousand dollars upfront is a dangerous gamble. 💸

Expense CategoryEstimated Cost (CAD)Details
Chartered Business Valuation$3,000 – $10,000+Required to set the legal baseline value of the corporation before marriage.
Complex Prenup Drafting$3,500 – $8,000+Lawyer fees to draft a customized contract with corporate exclusion clauses.
Independent Legal Advice (ILA)$800 – $2,000The fee for the other spouse’s lawyer to review the extensive corporate disclosures.

How Long Does the Process Take?

Because securing a formal business valuation can be highly time-consuming, business owners should begin the prenup process at least 3 to 4 months before their wedding day. ⏱️

Presenting a complex legal contract to your partner merely weeks before the wedding can be seen as “duress” by an Ontario family court. Rushing the process significantly increases the risk that the agreement will be deemed invalid later.

Frequently Asked Questions (FAQ)

Does the business increase in value count if I don’t have a prenup?

Yes. Without a marriage contract, the growth in the value of your business during the marriage is calculated into your Net Family Property. If your business gains $2 million in value while you are married, your spouse is generally entitled to an equalization payment covering half of that growth.

What happens to my normal salary from the corporation?

While you can exclude corporate shares and passive dividends from property division, your regular T4 salary drawn from the corporation is still treated as personal income. This salary will be used to calculate spousal support and child support obligations if you separate.

What if my spouse works for my company during the marriage?

If your spouse contributes labour to the business (even without a formal salary), they may have grounds to sue for a “constructive trust” or a share of the business, claiming their work helped it grow. A well-drafted marriage contract will include clauses preventing these specific claims.

Can I draft this clause myself without a lawyer?

Drafting a marriage contract yourself is incredibly risky, especially when corporate assets are involved. The Ontario Family Law Act has very specific phrasing requirements. A single wrong word can void the exclusion, exposing your entire corporate structure to family litigation.

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