The “Cancer” of the Canadian Family Law: What Happens If Your Ex Is Hiding Income?

In some of our recent Blogs, we’ve discussed the Supreme Court of Canada’s decision in Ahluwalia v. Ahluwalia and the growing recognition of Intimate Partner Violence (IPV) in Canadian law.  While many people associate IPV with physical or emotional abuse, it can also include financial control and economic manipulation.

One common example of this is when a separating spouse hides income, conceals financial information, or deliberately understates earnings in order to gain an advantage during divorce proceedings. 

But it’s important to know that this kind of behaviour is not limited to IPV scenarios – we see it happen often in all kinds of divorces, especially of the high-conflict variety.

Yet courts repeatedly describe financial disclosure as the foundation upon which fair support and property decisions are made – and conversely have referred to non-disclosure as the “cancer” of Family Law.  In Leitch v. Novac, 2020 ONCA 257 the court elaborated:

[44] As the Supreme Court suggested in Leskun v. Leskun, [2006] 1 S.C.R. 920, [2006] S.C.J. No. 25, 2006 SCC 25, at para. 34, nondisclosure is the cancer of family law. This is an apt metaphor. Nondisclosure metastasizes and impacts all participants in the family law process. Lawyers for recipients cannot adequately advise their clients, while lawyers for payors become unwitting participants in a fraud on the court. Judges cannot correctly guide the parties to a fair resolution at family law conferences and cannot make a proper decision at trial. Payees are forced to accept an arbitrary amount of support unilaterally determined by the payor. Children must make do with less. All this to avoid legal obligations, which have been calculated to be a fair quantification of the payor’s required financial contribution. In sum, nondisclosure is antithetical to the policy animating the family law regime and to the processes that have been carefully designed to achieve those policy goals.

Without reliable information, it becomes difficult – if not impossible – to achieve a just result.  Indeed, full and honest disclosure is one of the cornerstones of the entire Family justice system.

If you suspect your former spouse is not being honest about their finances, you can take at least some comfort from knowing that Canadian Family law takes financial disclosure very seriously. Here are some things to know:

Why Income Disclosure Matters

When spouses separate, many important issues depend on accurate financial information.  Specifically:

• Child support is generally based on both parties’ incomes, alongside many other factors geared toward the best interests of the child.
• Spousal support often depends on income, as part of a calculation of each spouse’s means, needs, and ability to pay.
• Property division may require a clear understanding of assets, liabilities, and financial transactions.

If one spouse is concealing income or assets, the entire process can become distorted.

That is why courts repeatedly emphasize that separating spouses must provide complete, accurate, and ongoing financial disclosure. Family law judges expect parties to be transparent about their financial circumstances, and they have little patience for those who attempt to hide the truth.

Canadian Family courts are disdainful about non-disclosure, and rightly so.

How Income May Be Hidden

Clearly, when a spouse conceals income, it has some serious ramifications.  But it can be hard to spot, because it often takes many forms.  For example, it could involve your spouse:

• Failing to disclose all sources of income
• Receiving hidden cash payments
• Diverting funds through a corporation
• Delaying the receipt of already-earned bonuses or commissions
• Transferring assets to family members
• Claiming business expenses that reduce reported income on paper while maintaining a much higher standard of living in reality.

Courts frown on these tactics, and focus on getting to what’s fair for the parties and any children.  As the court in Francis v. Ventura-Francis, 2025 ONSC 6437 explained:

[23]  Family law is not a shell game of Three Card Monty where income is to be hidden in accounts, not disclosed or the like.  Rather, it is a serious process where attention and forthright honesty are required in order to ensure that parties are properly compensated and that children have adequate lifestyles in every home in which they live.

If you’re on the other side of any kind of deceptive financial tactics, it can be hard to detect.  But there may be warning signs, which include:

• Missing financial documents;
• Unexplained cash transactions;
• Sudden reductions in reported income;
• Corporate records that do not appear consistent with lifestyle spending;
• Undisclosed bank accounts; or
• Significant purchases that cannot be explained by reported earnings.

If something does not seem to add up, it should be addressed – because justice demands it.

The Duty of Full Financial Disclosure

Another important thing to know, is that Family law imposes an ongoing obligation to provide complete financial disclosure. This means that a spouse generally cannot pick and choose which documents to produce.  Depending on the circumstances, this can include full disclosure of:

• Tax returns
• Notices of assessment
• Pay records
• Bank statements
• Business records, and
• Other financial documents.

Importantly, the obligation continues throughout the proceeding. If financial circumstances change, updated information may need to be provided.

What Can the Court Do?

Family courts have broad authority to address situations where a spouse fails to make proper financial disclosure, or appears to be understating his or her income.  For example, a court may:

• Order additional documents to be produced
• Compel answers to questions
• Require disclosure from third parties such as employers, accountants, or financial institutions
• Award legal costs against a non-compliant spouse
• Make other procedural orders designed to address the misconduct.

In more serious cases, the court may draw negative conclusions from a spouse’s failure to cooperate. This can include “imputing” income – that is, assigning the spouse with a higher income figure than what he or she claims to earn.

Case in point:   In the very recent ruling in Hall v. Herrington, 2026 ONSC 3724, the father claimed that his income had fallen dramatically after the failure of his business and sought a substantial reduction in child support. But the court disbelieved him, finding that he had failed to provide complete and reliable financial disclosure, had not demonstrated reasonable efforts to maximize his earning capacity, and was intentionally underemployed.

Rather than accepting his reported income, the court looked at all the evidence as a whole, and imputed annual income of $77,000 based on his earning capacity.  It concluded that the father could not try to avoid his support obligations by simply failing to disclose his income, or by deliberately earning less than he was reasonably capable of earning.

Protecting Yourself

If you believe your former spouse is hiding income, it is important to gather and preserve whatever financial information is available to you.  It is equally important to obtain legal advice as early as possible. An experienced Family lawyer can help identify gaps in disclosure, obtain court orders where necessary, and ensure that all your support and property claims are based on accurate financial information.  Give our offices a call.