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How Spousal Support Is Calculated in Alberta Using the SSAG

See how Alberta spousal support is worked out using the Spousal Support Advisory Guidelines, including the with-child and without-child formulas and ranges.

Family Law5 min readTSLBy the Treadstone Law Team · AlbertaUpdated November 6, 2026
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Key takeaways
  • The Spousal Support Advisory Guidelines are not law, but judges often base spousal support decisions on them.
  • Entitlement must be established before any formula applies, and an income gap alone is not enough.
  • Which formula applies depends on whether child support is also involved, and the without-child-support formula gives a range based on the gross income difference.

Many separating spouses want one answer: how much will I pay or receive each month? A tool that often comes up is the Spousal Support Advisory Guidelines, or SSAG, which are not law but which judges often base their spousal support decisions on.

This article explains what the SSAG are, how they fit with Alberta law, and what drives the amount and duration. It cannot give you a number, because that depends on your incomes, your family and your history.

This article covers the law of Alberta.

The SSAG are guidelines, not law

The Department of Justice Canada says the SSAG are not law, but judges often base their spousal support decisions on them, and lawyers also use them when advising and drafting agreements.

The law itself is in the Divorce Act for divorcing spouses and the Family Law Act for other spouses and adult interdependent partners. Both ask the court to consider each person's condition, means, needs and other circumstances.

Entitlement comes before any formula

The SSAG do not decide whether you are entitled to support. Entitlement must be established first, and if there is none the formulas do not apply. An income gap alone is not enough.

After a short marriage with limited financial interdependence and an income disparity, courts have found no entitlement.

The two formulas and their income inputs

FormulaWhen it is usedIncome basis
Without child supportNo child support is involved, often short or medium marriages without childrenGross income difference
With child supportChild support is also in playNet disposable income, starting from equal net disposable income in shared custody

For marriages of 25 years or more under the without-child-support formula, the range is 37.5 to 50 per cent of the gross income difference. The basic range builds at roughly 1.5 to 2 per cent of the gross income difference per year of marriage, and the recipient should never end up with more than 50 per cent of the spouses' net disposable income.

Because the result is a range, where you land within it depends on facts such as the other factors the court must weigh.

How long support lasts

Indefinite is not permanent. Support may be reduced or ended if self-sufficiency is reached, and courts may use review orders, step-down orders or time limits.

Which law applies and what else matters

The Divorce Act covers married couples seeking a divorce, and a spouse under it includes a former spouse. Married spouses who are not seeking a divorce can still claim spousal support under the Family Law Act, while unmarried partners cannot use the Divorce Act.

Unmarried former partners may owe or be owed Adult Interdependent Partner Support if they lived in an interdependent relationship for at least three continuous years or share a natural or adopted child, although having a child together does not in itself give rise to entitlement.

Retirement and repartnering can also come up later. Where an order or agreement is silent, retirement is usually treated as a material change, but early or voluntary retirement is looked at closely. A recipient's remarriage or repartnering is a complicating factor, not an automatic end to support. How this applies depends on your order and your situation, so it is worth confirming with a lawyer.

What to do next

Frequently asked questions

Are the SSAG binding on Alberta courts?

No. The SSAG are not law, though judges often base decisions on them. A court still applies the Divorce Act or Family Law Act factors to your facts.

Does a higher income than my spouse mean I will pay support?

Not automatically. Entitlement must be established first, and an income gap alone is not enough.

Will support last forever?

Support can be indefinite, but that is not the same as permanent, and it remains open to variation and review.

Can the amount change later?

Yes. A court can vary support on a change in circumstances. The change must be substantial and continuing, and one that would likely have led to a different order if known at the time.

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.

This is a family law question

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