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№ 77 Family Law

Can Relatives, Friends or Roommates Be Adult Interdependent Partners in Alberta?

Learn who can be an adult interdependent partner in Alberta, including relatives, friends and roommates, and why that status matters for property and support.

Family Law5 min readTSLBy the Treadstone Law Team · AlbertaUpdated November 6, 2026
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Key takeaways
  • Adult interdependent partner status is about how two people live, not whether they are romantic partners: they must share lives, be emotionally committed and function as an economic and domestic unit.
  • Relatives by blood or adoption can become partners only by signing an adult interdependent partner agreement.
  • Status can affect property claims, support and inheritance when there is no will.

Many people think adult interdependent partner status is only for unmarried romantic couples. In Alberta, the law looks at the nature of the relationship. That means two friends, a pair of relatives or long-term housemates could, in some situations, be caught by the rules.

This article explains what a relationship of interdependence is, who falls inside or outside the rules, who can sign an agreement, and why the status matters. Your own situation will turn on its facts, so a lawyer can confirm how the rules apply to you.

This article covers the law of Alberta.

What a relationship of interdependence means

The Adult Interdependent Relationships Act (AIRA) defines a relationship of interdependence as a relationship outside marriage in which two people share one another's lives, are emotionally committed to one another, and function as an economic and domestic unit. The definition does not say the two people must be romantic partners.

Alberta.ca lists factors that point to whether two people function as an economic and domestic unit:

Sharing a rental and splitting rent is not the same as sharing lives. A relationship that is only a convenient living arrangement may not meet the definition, though it depends on the facts.

The ways people become partners

Two people become adult interdependent partners if they live together in a relationship of interdependence for a continuous period of at least 3 years. They can qualify sooner if the relationship has some permanence and there is a child of the relationship by birth or adoption. They can also become partners with no minimum time by signing an adult interdependent partner agreement.

RouteWhat is needed
TimeLiving together in a relationship of interdependence for 3 continuous years
ChildRelationship of some permanence and a child by birth or adoption
AgreementA signed adult interdependent partner agreement under s. 7

Relatives, paid caregivers and people who are already committed

People related by blood or adoption can become partners of each other only by signing an adult interdependent partner agreement. The 3-year and child routes do not apply to them. Alberta.ca says relatives must use the form set out in the Adult Interdependent Partner Agreement Regulation.

Paid care is treated differently. No relationship of interdependence exists where one person provides the other with domestic support and personal care for a fee or other consideration. A live-in paid caregiver, for example, does not become a partner through that arrangement.

There are also limits tied to other relationships. A person cannot have more than one adult interdependent partner at a time, and a married person cannot become an adult interdependent partner while living with his or her spouse.

Who can sign an agreement, and when it is invalid

Any two people who are living together, or intend to live together, in a relationship of interdependence may enter into an agreement. A person cannot sign if they are already party to an existing agreement, are married, or are a minor. A minor who is at least 16 can sign if the minor's guardians gave prior written consent.

An agreement is invalid if a party was induced by fraud, duress or undue influence, or if the parties were neither living together nor intending to live together when they signed.

Be careful about claiming a relationship that does not exist. A person who alleges an adult interdependent relationship, knowing it does not exist, is liable in damages for the pecuniary loss and costs another person incurred in reliance on that allegation.

Why the status matters, and what to do next

Status can carry real consequences. The Family Property Act applies to adult interdependent partners as well as spouses, for partners who separate on or after January 1, 2020. Every spouse or adult interdependent partner has an obligation to provide support, subject to the Family Law Act. If someone dies without a will leaving a surviving adult interdependent partner but no descendants, the entire intestate estate goes to that partner.

Because the consequences can be significant, it helps to be clear about where you stand. Steps to consider:

Frequently asked questions

Can two friends or roommates be adult interdependent partners in Alberta?

Possibly, if they share one another's lives, are emotionally committed and function as an economic and domestic unit. They would also need to live together in that kind of relationship for at least 3 continuous years, be in a relationship of some permanence with a child of the relationship by birth or adoption, or sign an agreement. A simple shared-rent arrangement may not be enough.

Can my sibling or parent be my adult interdependent partner?

It can be possible, but only by signing an adult interdependent partner agreement, because the 3-year and child routes do not apply to people related by blood or adoption. The two of you must also be living together or intend to live together in a relationship of interdependence, and an agreement is invalid if neither is true when you sign. Alberta.ca says relatives must use the form in the Adult Interdependent Partner Agreement Regulation.

Is a paid live-in caregiver my adult interdependent partner?

Not through the paid arrangement itself. No relationship of interdependence exists where one person provides the other with domestic support and personal care for a fee or other consideration. How this applies to your situation depends on the facts, so it is worth confirming with a lawyer.

Can a minor sign an adult interdependent partner agreement?

A minor cannot sign unless the minor is at least 16 and the minor's guardians gave prior written consent. Anyone married or already party to an existing agreement also cannot sign.

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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