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№ 77 Family Law

When Does Separation Start Legally in Alberta?

Learn what counts as the start of separation in Alberta, how the date is shown, and why it matters for divorce, property and adult interdependent partners.

Family Law5 min readTSLBy the Treadstone Law Team · AlbertaUpdated November 1, 2026
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Key takeaways
  • Alberta has no formal 'legal separation' status; you are separated when the relationship ends and you live apart.
  • One spouse's intention to live separate and apart can count towards the start date.
  • The date can affect divorce timing and the deadline to start a property case.

Many people are not sure which day their separation began. Was it the day one of you moved out, the day you said the relationship was over, or some later date?

The answer matters because several time limits run from it. This article explains how Alberta approaches the start date, what can interrupt it, and why you should settle on a date early.

This article covers the law of Alberta.

There is no formal legal separation in Alberta

Alberta's government says there is no such thing as a 'legal separation' in Canada. Married spouses or adult interdependent partners are separated when they end the relationship and live apart. You do not file anything or get a certificate to be separated.

What people call a legal separation is usually one or more tools used afterwards: a separation agreement, Family Law Act court orders, Family Property Act orders, or a divorce under the Divorce Act.

How the start date is worked out for spouses

For a divorce, spouses are deemed to have lived separate and apart for any period during which they lived apart and either of them intended to live separate and apart from the other. So the intention of one spouse counts towards the start date, even if the other disagrees.

A divorce on the ground of marriage breakdown is established when the spouses have lived separate and apart for at least one year immediately before the divorce is decided.

Because the test turns on intention rather than on different addresses, spouses who still share a home can be treated as separated if at least one of them intends to live separately. Evidence is a matter for the court, and the Act does not list what evidence is required.

To bring a divorce in an Alberta court, either spouse must have been habitually resident in the province for at least one year immediately before the proceeding starts.

What can interrupt or reset the clock

If you have tried to reconcile, keep a simple note of dates, because the 90-day limit is counted in total.

A legal adviser acting for a spouse in a divorce must point out the parts of the Divorce Act aimed at reconciliation and discuss the possibility of reconciliation with that spouse, so expect that question to come up.

Why the date matters for divorce, property and partners

SituationHow the date matters
DivorceOne year of separation is a ground for divorce.
Property between spousesA property proceeding on separation may be started within 2 years after the separation date. If there is a divorce, the limit can instead run 2 years from the decree nisi, declaration or judgment.
Adult interdependent partnersThe 2-year limit runs from when the applicant first knew, or ought to have known, they became a former partner.

For adult interdependent partners, the relationship ends after they have lived separate and apart for more than one year and one or both intend it not to continue. A brief reconciliation of no more than 90 days with reconciliation as its main purpose does not interrupt that period. Because these rules differ, a lawyer can confirm which deadline applies to you.

The property rules for adult interdependent partners that match those for married spouses only apply to couples who separate on or after January 1, 2020. An adult interdependent relationship can include living with another adult for 3 years, or less than 3 years if you have signed an Adult Interdependent Partner Agreement or have a child together. Unless a compliant written agreement says otherwise, property to be distributed is valued as of the date of the trial.

Separation agreements and other options

A separation agreement is a contract between people who are separating or divorcing. Common topics are parenting time, child support, spousal support and property division. Alberta does not require one; you can write one yourselves, though the government recommends speaking to a lawyer.

For an agreement dealing with property to count as a compliant written agreement, each party must acknowledge in writing, apart from the other, that they understand the agreement and the claims they give up, and that they sign it freely. That acknowledgement must be made before a lawyer other than the one acting for the other party.

What to do next

Frequently asked questions

Do I have to file something to be legally separated in Alberta?

No. Alberta says there is no such thing as a legal separation; you are separated when you end the relationship and live apart. You can later use a separation agreement, court orders or a divorce.

Does my spouse have to agree on the separation date?

Not necessarily. Spouses are deemed to have lived separate and apart for any period when either of them intended to live separate and apart. If the date is disputed, it is a matter for the court.

Does getting back together restart the one-year clock?

Not if it was no more than 90 days in total and the main purpose was reconciliation. Longer or non-reconciliation cohabitation can break the period.

How long do I have to divide property after separating?

A property proceeding between spouses may be started within 2 years after the separation date. Different starting points apply after a divorce and for adult interdependent partners.

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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