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№ 22 Wills & Estates

Can an Adult Interdependent Partner Claim Against an Estate in Alberta?

Learn whether an adult interdependent partner has the same maintenance claim as a spouse in Alberta, how the relationship is proven, and the time limit.

Wills & Estates5 min readTSLBy the Treadstone Law Team · AlbertaUpdated November 1, 2026
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Key takeaways
  • An adult interdependent partner is listed as a family member alongside a spouse, so the maintenance claim falls in the same category.
  • The relationship is shown by living in interdependence for at least 3 years, by a relationship of some permanence where there is a child of the relationship, or by an adult interdependent partner agreement.
  • A claim must generally be started within 6 months after the grant of probate or administration, not after the death.

You lived with your partner for years, shared a home and a life, and then found out you were not named in the will, or the share you received seems far too small. You may wonder whether being unmarried changes your rights.

In Alberta, the law has its own category for people in marriage-like relationships. This article explains how that category works for a maintenance claim against an estate, how the relationship is proven, and what deadlines to watch.

This article covers the law of Alberta.

Is a partner treated like a spouse for a maintenance claim?

Yes, in the sense that matters here. The family maintenance and support claim is created by Part 5, Division 2 of the Wills and Succession Act. It lets a court order that adequate provision be made from an estate when a will, or an intestacy, does not properly provide for a family member.

Spouses and adult interdependent partners are both listed as family members, so a partner has a claim in the same category as a spouse. Being a family member only gives you the right to apply. The court still decides whether and how much to award.

When deciding a claim, the court looks at factors including your relationship with the deceased, your age and health, your capacity to contribute to your own support, and any entitlement to support from another person. It also looks at the deceased's legal support obligations, the deceased's reasons for the gifts made (including written statements), and any agreement or waiver you signed. The court can still make an order despite a waiver or agreement to the contrary. The size and distribution of the estate, and any other matter the court considers relevant, also count.

How the relationship is proven

The test comes from the Adult Interdependent Relationships Act. Two people are adult interdependent partners if they have lived in a relationship of interdependence for a continuous period of at least 3 years, or for a period of some permanence if there is a child of the relationship by birth or adoption. They are also partners if they signed an adult interdependent partner agreement.

Evidence usually comes from everyday records. Think about what shows you were living as an interdependent couple:

Situations that can change the answer

SituationWhat the law says
Partners related by blood or adoptionThey can become partners only by signing an adult interdependent partner agreement
One person was paid to provide careA relationship of interdependence does not exist where domestic support and personal care are provided for a fee or other consideration, or on behalf of an organization or government
The partnership had endedA former adult interdependent partner is not a family member under that paragraph

Whether your facts fit these rules can be a close question. A lawyer can review your situation.

Deadlines and protecting the estate

An application must be commenced within 6 months after the grant of probate or administration is issued. The clock runs from the date of the grant, not the date of death. A court may allow a late application, but only for the part of the estate that has not yet been distributed.

In general, the personal representative may not distribute estate property for 6 months after the grant without consent or a court order, and reasonable advances are allowed. Once notice of your application is served on the personal representative, the estate is subject to any order made. An application is started by filing Form C 1 with an affidavit in Form C 2.

While a claim is pending, the court may protect or preserve estate assets or direct how the estate is administered. If the court makes an order, support may be an annual or other periodic amount, a lump sum, or a transfer of specified property, and the court may set conditions. An order takes effect as if it had been made immediately on the death.

What to do next

Surviving partners who are not on title and ordinarily lived in the family home may be entitled to possession for 90 days from the date of death, which the court can terminate, shorten or extend, but if the home passed to the owner by right of survivorship the period may not exceed 6 months.

Frequently asked questions

Does a partner automatically inherit if there is no will?

Not always. If the deceased has no descendants, the entire intestate estate goes to the surviving spouse or adult interdependent partner. If all the descendants are also the survivor's, the survivor takes the entire estate. If some descendants are not the survivor's, the survivor takes the greater of a prescribed amount or 50% of the net value of the intestate estate.

What if the deceased had both a spouse and a partner?

Where both survive and there are descendants, each takes half of the share the survivor would take when some descendants are not the survivor's (the greater of a prescribed amount or 50% of the net intestate estate). With no descendants, each takes half of the estate.

Do I have a claim if we had already separated?

A former adult interdependent partner is not a family member under the partner paragraph. Whether your relationship had actually ended can be a question of fact, so get advice.

Does this apply to every death?

No. The maintenance rules apply to deaths on or after February 1, 2012. Earlier deaths are governed by older, repealed statutes.

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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