What is a Prenup? [Ontario Beginner Guide]

So you’re about to get married and are wondering whether you need a prenup?

A prenuptial agreement is legally recognised as a marriage contract in Ontario. A marriage contract ensures the protection of the rights of individuals entering into a marriage and is an instrument to be used when trying to mitigate any future separation, as well as managing obligations and rights under the marriage.

As a couple chooses to enter into a marriage, long-term intentions must consist of rational thinking. By entering into a marriage contract with your spouse, it can be assured that both parties to the agreement will be aware of prospective property possession and financial expectations.

This provides legal clarity when required in necessary circumstances. In the Family Law Act, section 52 states that there are many different obligations and expectations that can be implemented within a marriage contract, such as:

• Ownership in or division of property
• Support obligations
• The right to direct the education and moral training of their children, but not the right to decision making responsibility or parenting time with respect to their children
• Any other matter in the settlement of their affairs

While a marriage contract may be used to set terms within a relationship, they typically are used to provide protection in the event of a separation for both parties to the marriage, helping to prevent and mitigate future conflict. Furthermore, a marriage contract formalizes the legal aspect of a relationship with a spouse which protects the interests and legal rights of the parties to the marriage.

How does a marriage contract protect you in a Divorce?

Marriage contracts, often referred to as prenuptial agreements, typically protect personal assets which have been accumulated before the marriage. A marriage contract is a voluntary agreement by the two parties of the marriage, which establishes the rights, obligations and expectations for the couple regarding finances, marital assets and pre-marital assets.

A marriage contract provides financial security and legal clarity if one of the parties to the marriage brings a more significant amount of assets to the relationship. Financial concerns are a common disagreement within relationships, and outlining financial expectations and responsibilities ensures that there is minimal conflict surrounding financial decisions as well as alleviating unnecessary financial stress in the event of a separation.

Furthermore, assets which have been obtained before the marriage are recognized as premarital property; however, these premarital assets can become assets of the marriage if they are not properly protected. This typically occurs if a premarital asset is used in an investment within the marriage and without the proper paperwork of a marriage contract, this asset can become marital property, which may be subject to distribution in the event of a separation.

Discussing a prenup with your partner may be a tough subject to bring up and may not be perceived as the most romantic aspect to work out before marriage; however, taking the necessary steps to protect yourself in the event of a separation should be a priority.

While going through the process of formalizing a marriage contract, it is imperative that both parties are fully aware of the terms of the contract and the rights within. By seeking Independent Legal Advice (ILA) individuals can feel assured that they possess the necessary legal knowledge to make informed decisions in regards to the contract.

Prenuptial agreements

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Marriage contracts and outstanding expenses of a spouse

As with situations of individuals bringing significant wealth and premarital assets into a marriage, there are also situations where individuals will bring significant debt to a marriage. There are many forms in which debt that has been previously incurred by a party to a marriage may be subject to becoming a burden for the collective finances of a marriage.

Instances such as credit card debt and student loans are the most common form of debt obligations which are brought into a marriage. A well drafted marriage contract can protect the party which has not incurred such debts, by outlining current and future debt obligations limiting the debt exposure by specifiying in the contract how exactly the debt will be resolved and where the finances will come from.

The process of drafting a marriage contract

When drafting a marriage contract transparency is the main priority. By ensuring the parties to contract are fully aware of all implications and obligations within the contract, ensures that it will be enforceable in the future. Through providing legal clarity and guidance to both parties throughout process of drafting a marriage contract establishes a clear, fair and carefully thought out agreement.

First, the initial discussion regarding finances, assets, obligations and future expectations of finances within the marriage must be had. Other aspects of the disussion may revolve around future financial growth as well such as inheritance’s, spousal support and even property division.

Secondly, consulting a lawyer which can properly draft a marriage contract. Both parties to the contrcat will need to acquire Independant legal advice (ILA) as discussed above which ensures the agreement will be fair and enforceable. ILA will make sure the parties are aware of all the terms, conditions and obligations within contrcat as well as making the client aware of any possible future implications

Thirdly, there will need to be a full disclosure of the financial circumstances of the parties to the contract. This transparency ensures fairness throughout the process and can consist of providing information on such things as:

• Expectations of inheritances
• Annual income
• Assets
• Liabilities

Lastly, the drafting of the actual contract and the revision, review and signing of the document. key provisions which will typically be covered within consist of:

• Property division expectations
• Spousal support terms
• Debt allocation and responsibility
• Inheritance provisions
• Financial protection

Making sure that all terms are agreeable to each party and that the signing of the document is done so voluntarily and without undue influence. Being proactive with the marriage contract and finalizing the agreement well before the marriage ensures the validity of the agreement.

What cannot be included in a marriage contract?

While a marriage contract can pretty much protect anything of value, there are certain aspects of a marriage which cannot be regulated by contract. For example, child access and custody cannot typically be terms within a contract, as in the event of a divorce, the court will act in the best interest of the child when deciding on such matters. There are also regulations around the matrimonial home, where it is stated in the Family Law Act, s.52 (2) that a spouse’s right of possession of the matrimonial home must not be limited, and if so, will be regarded as unenforceable. Section 17 of the Act governs spousal rights within a matrimonial home.

Lastly, any provisions within a marriage contract which are seen as overriding any law or statutes will be recognized as invalid, and the courts will remove this part of the document. Hiring a lawyer to help draft a marriage contract ensures that all terms within the contract will be valid.

Can I Write My Own Prenup in Ontario?

Yes, technically you can write your own prenup in Ontario. The Family Law Act does not require that a marriage contract be drafted by a lawyer, and a homemade document can be enforceable if it meets the formal requirements. The catch is that the bar for enforceability is high, and most DIY prenups fail at the worst possible moment, when one spouse tries to rely on it during separation.

What the Family Law Act Requires

Section 55 of the Family Law Act sets out the basic formalities. A marriage contract must be in writing, signed by both parties, and witnessed by at least one third party. Section 56(4) lays out the grounds on which a court can set aside a marriage contract:

• One party failed to disclose significant assets, debts, or other liabilities at the time the contract was made
• One party did not understand the nature or consequences of what they were signing
• The contract is otherwise unconscionable under the law of contract

Most DIY prenups fail on the first ground. Without a structured exchange of financial disclosure (sworn statements with supporting documents), it is almost impossible to prove later that both parties understood what they were giving up.

Why Independent Legal Advice Matters

Although the Family Law Act does not strictly require independent legal advice (ILA), Ontario courts treat the absence of ILA as a major red flag. When one party signs without their own lawyer reviewing the agreement, courts more easily accept arguments that the signer did not understand the contract or felt pressured. ILA is the strongest single safeguard against a successful challenge.

A proper ILA process involves each spouse retaining their own lawyer (not the same lawyer for both), receiving a written explanation of what the contract changes for them legally, and signing a Certificate of Independent Legal Advice that is attached to the marriage contract.

The Real Risk of a DIY Prenup

The risk is not just that a poorly drafted prenup might be set aside in court. The bigger risk is what happens at the negotiation stage of a separation. A spouse looking at a DIY prenup with obvious enforceability problems has every incentive to challenge it, knowing that the cost of litigating the issue is enormous and that a settlement reflecting the original contract is unlikely. The DIY savings often turn into hundreds of thousands of dollars in legal fees and a settlement that ignores the contract entirely. For a concrete example, see our side-by-side of Jointly vs. a lawyer-drafted prenup.

If your goal is to save money, the most cost-effective approach is to use a flat-fee family lawyer who specializes in marriage contracts. A typical Ontario marriage contract drafted with full ILA on both sides costs $3,000 to $6,000 total. Compared to the value of what is being protected (often hundreds of thousands of dollars in pre-marriage assets, business interests, or inheritance), it is one of the cheapest forms of insurance you can buy.