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Can a Child Over 18 Claim Family Maintenance From an Estate in Alberta?

Does turning 18 end a child's right to support from a deceased parent's estate in Alberta? Learn about the full-time student and disability categories.

Wills & Estates4 min readTSLBy the Treadstone Law Team · AlbertaUpdated November 1, 2026
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Key takeaways
  • Turning 18 does not by itself end the right to claim, but a child aged 18 or older must fit the student or disability category.
  • A child aged 18 to under 22 must be a full-time student who cannot withdraw from the parents' charge.
  • A child 18 or older who is unable to earn a livelihood because of mental or physical disability can claim with no upper age limit stated.

Many families assume that support from a parent stops on a child's 18th birthday. When a parent dies, that raises a real question: can a young adult still ask the estate for support if the will leaves them little or nothing?

In Alberta the answer depends on the child's situation. Two categories of child over 18 can still qualify as family members, and this article explains both.

This article covers the law of Alberta.

Does turning 18 end the right to claim?

Not automatically. The family maintenance and support claim comes from Part 5, Division 2 of the Wills and Succession Act. Under that Part a child under 18 is a family member, and so is a child 18 or older who falls into one of two defined categories.

A child who turns 18 and does not fit either category is outside the definition and has no Part 5 claim. For that reason the details of each category matter.

The full-time student category (18 to under 22)

A child aged 18 to under 22 who cannot withdraw from the parents' charge because they are a full-time student is a family member. The child must be a full-time student as defined in the Family Law Act and its regulations, and turning 18 does not by itself end the right to claim.

This category covers children aged 18 to under 22. How that age limit applies to your timing depends on your facts, so it is worth confirming with a lawyer. An able-bodied adult child aged 22 or older generally has no Part 5 claim.

The disability category

A child 18 or older who is unable to earn a livelihood by reason of mental or physical disability is a family member, and the paragraph states no upper age limit.

If the adult child has a trustee under the Adult Guardianship and Trusteeship Act, they are a represented adult, and the trustee can apply on their behalf. Someone else permitted by the Alberta Rules of Court or Surrogate Rules may also apply for a represented adult. An incapacitated person is served through the Public Trustee.

The Court can consider whether the child is entitled to support from another person. How government disability benefits or trusts affect a claim is a point for the Court's discretion, and a lawyer can advise on the effect on benefits such as AISH.

How a claim works and who can bring it

A family member can apply on their own behalf. For a child under 18, a parent or guardian, the Public Trustee, or another person permitted by the rules can apply. The application is commenced by filing Form C 1 with an affidavit in Form C 2.

Notice must be served on the personal representative and all family members, along with other people who may be affected by the order. Where the Public Trustee must be served, the application cannot proceed until it is represented or has said it will not be.

In deciding, the Court looks at the family member's relationship with the deceased, age and health, and capacity to contribute to their own support. Orders can be periodic payments, a lump sum, or a transfer of property, with conditions the Court considers appropriate.

Child's situationCan claim?
Under 18 at deathYes, and a parent, guardian or the Public Trustee may apply
18 to under 22, full-time student who cannot withdraw from the parents' chargeYes
18 or older, unable to earn a livelihood due to disabilityYes
22 or older and able-bodiedNo Part 5 claim

Deadlines and next steps

An application must be commenced within 6 months after the grant of probate or administration is issued, counted from the grant and not the death. A late application is a matter of court discretion and only reaches estate property not yet distributed. This Division applies only to deaths on or after February 1, 2012.

Frequently asked questions

My parent died while I was in university. Can I claim?

You may be a family member if you were aged 18 to under 22 and a full-time student who could not withdraw from your parent's charge. The student must meet the Family Law Act definition of full-time student. A lawyer can confirm how that applies to you.

What if I turned 22 after my parent died?

The student category is described by age, and how it applies if you passed a birthday after the death depends on your facts. Which age counts, and when, is worth confirming with a lawyer, as is the 6-month deadline after the grant.

Can a parent apply for a child under 18?

Yes. A parent or guardian, the Public Trustee, or another person permitted by the rules can apply for a child under 18. A child in the womb who is later born alive is also included.

Does a waiver signed by the child stop the claim?

Not necessarily. The Court can make an order despite a family member's waiver or agreement to the contrary. It may also consider any agreement or waiver as one factor.

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. Alberta 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 lawyer who practises in Alberta. Reach us at 1-844-900-1070 or send our Team a message.

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