Can an Adult Child Claim Support From a Parent's Estate in Ontario?

Being left out of a parent's will, or receiving far less than expected, is painful at any age. Many adult children assume that once they've grown up and become financially independent, they have no legal recourse at all. That's not quite right. An adult child dependant support claim in Ontario is possible — but success depends on a narrower set of facts than most people expect.

Being an Adult Child Doesn't Automatically Help or Hurt You

Ontario's Succession Law Reform Act treats "child" as a category without a minimum or maximum age. Being an adult doesn't disqualify you from the "child" category. But the category alone is never enough — you also need to show the deceased was providing you with support, or was under a legal obligation to provide it, immediately before death. This second requirement is where most adult-child claims succeed or fail.

The Core Requirement: Support Immediately Before Death

This is a fact-specific test, not a formula. The court looks at your actual relationship with the parent in the period right before death — not at whether, in principle, parents generally support their children. A financially self-sufficient adult who received nothing from a parent for years faces a much harder road than one who was still receiving meaningful, ongoing assistance.

Situations Where an Independent Adult Might Still Have a Claim

• You were receiving regular financial assistance — an allowance, help with rent or a mortgage, or being carried on a parent's insurance or benefits
• You were living in a parent's home rent-free, or with substantially reduced costs, as an ongoing arrangement
• You have a disability or health condition that created an ongoing need the parent was addressing
• The parent had made a clear, ongoing commitment to support you that was still in effect at the time of death

Situations That Typically Don't Support a Claim

• You are fully financially self-sufficient and had not received support from the parent for a meaningful period before death
• You received occasional gifts — holidays, birthdays, one-off help — rather than an ongoing pattern of support
• Your only complaint is that a sibling received more, without a separate support relationship of your own

What a Court Weighs If Your Claim Proceeds

Even once you clear the "support" hurdle, a court doesn't apply a fixed formula to decide what you should receive. It generally looks at things like your financial needs and circumstances, your age and health, the size of the estate and what it can realistically support, whether other dependants also have claims on the same assets, and the pattern of support the parent was actually providing before death. There is no percentage or table set out in the legislation — the outcome depends on your specific facts.

How This Differs From Simply Being Disinherited

It's worth separating two different situations. Being left out of a will because a parent chose to favour a sibling, without any ongoing support relationship, is a question of testamentary freedom — parents are generally free to divide their estate as they see fit. A dependant's support claim is different: it exists specifically because the deceased was supporting you, or was legally obligated to, and the will (or intestacy) failed to continue adequate provision for that established need. Confusing the two can lead to a claim that's framed the wrong way from the start.

Timing Matters

If you think you have a claim, don't wait to explore it. Dependant's support claims are generally subject to a strict six-month deadline running from when the estate certificate is granted, and a court's discretion to allow a late claim is limited to any part of the estate not yet distributed. The longer you wait, the more likely the estate has already been distributed to other beneficiaries, which can make recovery far harder even where the court would otherwise have discretion to help.

Frequently asked questions