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№ 22 Wills & Estates

Disinherited Child in Ontario: Can They Still Make a Claim?

See what options an adult child left out of a will may have in Ontario, including dependant support claims, time limits and assets outside the estate.

Wills & Estates4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 13, 2026
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Key takeaways
  • Being left out of a will does not by itself answer whether you can claim; the facts of your situation decide that.
  • A dependant's support claim can reach assets that skip probate, including life insurance and plan designations.
  • A support application generally cannot be made more than six months after the grant of letters probate or administration.

Learning that a parent left you out of their will is painful, and it often raises a practical question: is there anything you can do? In Ontario, the answer depends on your circumstances and on what the estate holds.

This article explains one main route, a dependant's support claim, and why the assets that pass outside the will matter. It cannot say whether you qualify, because that depends on facts a lawyer will need to review.

Being left out is not the end of the question

A will generally states who receives what, but it is not the only thing that decides who may have a claim against an estate. Ontario law gives some people the right to apply to court for support from the estate even though the will says otherwise.

Whether an adult child can make such a claim depends on personal facts, such as your relationship with the deceased and your financial situation. A lawyer can assess those facts. Other challenges to a will can also exist, and these also turn on the specific circumstances.

The dependant's support claim

For a dependant's support claim, life insurance owned by the deceased and amounts payable under a plan designation are deemed part of the net estate. Designated assets that skip probate can still be reached by a dependant.

There is a time limit. A dependant's support application generally cannot be made more than six months after the grant of letters probate or administration. The court may allow a later application against any part of the estate that is still undistributed.

Because the clock is tied to the grant, it helps to find out early whether an application for probate has been made or a grant issued.

Assets that pass outside the will

Many people assume the will controls everything. It often does not. When a beneficiary is designated, the insurance money does not form part of the insured's estate and is not subject to the claims of the insured's creditors.

For Estate Administration Tax, the estate value excludes assets with a beneficiary designation, jointly owned assets that pass automatically to the other owner, real estate outside Ontario, and registered plans (RPP, RRSP, RRIF, TFSA) with a beneficiary designation.

What happens in the estate while you decide

An estate trustee collects the estate assets, pays taxes and debts, and distributes the residue to those entitled. If the deceased owned real property or assets held by a financial institution, the estate normally has to be probated through a Certificate of Appointment of Estate Trustee.

A legal representative should get a CRA clearance certificate before distributing estate property, and anyone who distributes without one is personally liable for unpaid amounts, up to the value of the assets distributed. Distribution can therefore move at a measured pace, but you should not assume that the estate will wait for you. Raise your concerns promptly.

What to do next

Frequently asked questions

Can an adult child always claim against a parent's estate?

No. Whether you can claim depends on your particular facts, and a lawyer is the right person to assess them. Being named or not named in a will does not settle the question.

Is there a deadline to make a dependant's support claim?

Generally, an application cannot be made more than six months after the grant of letters probate or administration. The court may allow a later application against any part of the estate still undistributed.

Can a support claim reach life insurance that names someone else?

For a dependant's support claim, life insurance owned by the deceased and amounts payable under a plan designation are deemed part of the net estate. That means designated assets can still be reached.

Do I pay tax if I do receive an inheritance?

The CRA lists most gifts and inheritances as amounts that are not reported or taxed for the person who receives them. Income earned on estate property afterward can be a different matter, so ask an accountant.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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