Almost every domestic contract file slows down at the same place. The parties have agreed in principle, the lawyers have exchanged drafts, and then someone is asked for three years of corporate financial statements and the process stops for a month.
The resistance is understandable. Disclosure feels invasive, it is administratively tedious, and there is a persistent suspicion that the other side is fishing. But disclosure is the single most important thing you can do to make your agreement stick, and the party who resists it is usually the party who will regret it.
What the Statute Requires
Section 56(4)(a) of the Family Law Act allows a court to set aside a domestic contract where a party failed to disclose significant assets, debts, or other liabilities existing when the contract was made.
That is the whole requirement. It is deliberately general, and it does not come with a checklist. Two things follow from that.
First, the obligation is on you to disclose, not on the other party to ask. A spouse who answers every question honestly but never volunteers the existence of a holding company has a problem, even if no one asked about holding companies.
Second, "significant" is judged later, by a judge, with hindsight and in the context of your overall financial picture. A $40,000 asset is significant in a household with $200,000 in net worth and marginal in one with $8 million. Nobody wants to be arguing about which side of the line an item fell on. The cure is to disclose it and let the other party decide whether it matters to them.
What That Looks Like in Practice
For most people, adequate disclosure means an organized schedule covering:
- Real property, with a current value and the balance of any mortgage or line of credit secured against it
- Bank and investment accounts, with recent statements
- Registered plans — RRSPs, RRIFs, TFSAs, RESPs — with statements showing balances
- Pension entitlements, including a valuation where one is available
- Business interests, including shares in private corporations, partnership interests, and professional corporations
- Interests in trusts, whether as settlor, trustee, or beneficiary
- Vehicles and other significant personal property
- Life insurance with a cash surrender value
- All debts: mortgages, lines of credit, credit cards, student loans, tax liabilities, shareholder loans, and guarantees
Income disclosure usually accompanies this — recent tax returns and notices of assessment — particularly where the agreement addresses spousal support.
The format matters less than the substance. Some files use the court's Form 13.1 as a framework because it is comprehensive and both lawyers know it. Others use a schedule tailored to the agreement. What matters is that the disclosure is specific, supported by documents, and attached to or expressly referenced in the contract itself.
The Business and Trust Problem
This is where files genuinely get difficult, and where the temptation to under-disclose is strongest.
Listing "100 common shares of 1234567 Ontario Inc." is not disclosure. It tells the reader that a company exists and nothing about what it is worth. Meaningful disclosure of a corporate interest generally means financial statements, an explanation of what the company holds or does, and some indication of value — a formal valuation where the interest is substantial, or at minimum a documented basis for the figure used.
Trusts require similar treatment. If you are a beneficiary of a family trust, the other party is entitled to know that, to know what the trust holds, and to understand the nature of your interest. A discretionary beneficial interest is not the same as a fixed entitlement, and the distinction is worth explaining in the agreement rather than leaving the other side to discover it later.
Where a valuation is expensive or the number is genuinely contested, there are workable alternatives. Parties can agree on a value for the purposes of the contract, they can attach the underlying statements and record that neither party obtained a formal valuation, or they can acknowledge a range. What does not work is silence.
Can You Waive Disclosure?
Parties sometimes ask whether they can simply write in a clause saying that both sides waive further disclosure and are content to sign.
You can include such a clause, and it is common. It is not worthless — it is evidence that the party made an informed choice. But it is not a shield. A waiver of disclosure is only meaningful if the party waiving knew, at least in general terms, what they were giving up the chance to see. A blanket waiver signed by someone with no idea that their fiancé owns three rental properties will not survive contact with section 56(4).
The clause works best as a supplement to real disclosure, not a substitute for it: both parties disclose properly, and then agree that they do not require additional documentation before signing.
Why the Reluctant Party Is the One at Risk
Here is the point that gets missed most often.
Section 56(4) is a tool for the party who did not receive disclosure. If you are the spouse with the business, the trust interest, and the rental portfolio — the person for whose benefit the contract mainly exists — you are also the person with the most to lose if it is set aside.
"Under-disclosing does not protect you. It gives the other party a key they can use years later, at the exact moment you most need the agreement to hold."
A contract that survives a challenge is worth far more than the few hours saved by not pulling statements.
Practical Advice
Start the disclosure early, before the drafting is finished. It routinely takes longer than people expect, particularly where corporate statements or pension valuations are involved, and it is the item most likely to push a signing date past a wedding.
Be over-inclusive. Nobody has ever been criticized for disclosing something that turned out not to matter.
Keep a record of what was exchanged and when. If the agreement is challenged in fifteen years, the file is the evidence.
And attach it. Disclosure that lives in an email thread is disclosure that will be disputed. Disclosure that appears as a schedule to a signed agreement, acknowledged in the recitals by both parties, is disclosure that is very hard to argue with.
This post is general information about Ontario law and is not legal advice. Every situation is different. If you are preparing financial disclosure for a domestic contract, speak with a lawyer about what your file requires.