Spousal Support Advisory Guidelines Ontario: How the Ranges Work

If you are going through a separation in Ontario and spousal support is on the table, you have probably heard the term "advisory guidelines" — and wondered what it actually means for your situation. The Spousal Support Advisory Guidelines (SSAG) are the closest thing Ontario has to a predictable formula for support, but they are not legislation, and understanding what they can and cannot tell you is essential before you enter any negotiation or court proceeding.

This article explains what the SSAG are, why they remain advisory rather than binding, how the two main formulas work in plain language, and what factors push a number toward the high or low end of the range.

What Are the Spousal Support Advisory Guidelines?

The SSAG were developed by two law professors commissioned by the federal Department of Justice and released in draft form in 2005, with a revised version published in 2008. They are not a statute. No legislature ever passed them into law. They exist as a policy document designed to bring more consistency and predictability to spousal support decisions across Canada.

Because Canada's divorce law is federal — the Divorce Act — and Ontario's provincial family law is governed by the Family Law Act, spousal support can arise under either statute depending on whether a couple was married or in a common-law relationship. The SSAG were designed primarily around married spouses and the Divorce Act, but courts in Ontario routinely apply the same framework to common-law partners under the Family Law Act as a useful analytical tool.

Why "Advisory" Matters

Calling the SSAG advisory is not just a technicality. It means:

• A judge can depart from the ranges for good reason without overturning precedent.
• Parties can negotiate outside the ranges if both agree.
• The guidelines do not override the statutory factors a court must consider — things like the length of the relationship, the roles each spouse played, and the effect of the relationship on each person's earning capacity.

That said, courts across Ontario treat the SSAG ranges as a strong starting point. If an award falls well outside the range, a judge is expected to explain why. In practice, this gives the guidelines real teeth even without statutory force.

The Two Formulas: A Conceptual Overview

The SSAG use different formulas depending on whether child support is also being paid. The distinction matters because child support affects each spouse's disposable income in ways that change what spousal support is appropriate.

Without Child Support Formula

When there are no dependent children (or child support is not being paid by the same payor), the formula focuses on two core inputs:

1. The income difference between the spouses. The formula works off the gross income gap. A larger gap generally means a higher quantum of support.
2. The length of the marriage or cohabitation. Time is the multiplier that determines both the amount and the duration of support.

The formula produces a percentage of the difference in the spouses' gross incomes. That percentage rises with the length of the relationship — as of writing, verify the current figures — generally falling within a band that gives a low, mid, and high end of a monthly range. Longer relationships also shift the duration from a time-limited award toward an indefinite one.

What drives you toward the high end of the range:

• A long marriage with a large income disparity
• One spouse who left the workforce entirely or for a significant period to care for children or support the other's career
• Age or health factors that limit the recipient's ability to become self-sufficient

What drives you toward the low end:

• A shorter relationship
• Both spouses earning similar incomes
• The recipient already working full-time and earning a reasonable income

With Child Support Formula

When the payor is also paying child support, a different formula applies. Child support is paid first — it takes priority — and the spousal support calculation then accounts for the fact that both spouses have already had their incomes adjusted by the child support obligation.

The "with child support" formula is often described as an income shares approach. It looks at the total net disposable income available to both households after child support and allocates it to ensure the recipient spouse's household ends up with a fair share — generally a range around 40 to 46 percent of the combined net disposable income, as of writing, verify current figures and confirm applicable thresholds.

Because this formula depends on after-tax and after-child-support income rather than gross income differences, it is more sensitive to the specific child support amount, tax treatment, and any special or extraordinary expenses being shared.

Duration under the "with child support" formula is often tied to milestones — the youngest child finishing school, for example — rather than a simple multiple of the relationship length.

How Ontario Courts Use the SSAG in Practice

Courts do not simply plug numbers into a formula and hand down an award. The SSAG ranges are the starting point, not the finish line. A judge will consider:

• Ability to become self-sufficient. The Divorce Act specifically directs courts to consider each spouse's ability to become economically self-sufficient. If a recipient has strong earning capacity and is simply choosing not to use it, a court may award less than the mid-range figure or impose a review date.
• Compensatory claims. If one spouse's career genuinely suffered because of decisions the couple made together — relocating for the other's job, stepping back during key career years to handle the family — the compensatory rationale supports higher or longer support.
• Non-compensatory or needs-based claims. Even where no sacrifice can be clearly identified, a large income disparity after a long marriage can ground a needs-based claim. The SSAG capture this through the formula itself, but courts may adjust for unusual living expenses or debts.
• Negotiated agreements. Many Ontario separations resolve through a separation agreement rather than a court order. The SSAG ranges give both lawyers a common reference point during negotiation, which often leads to faster, cheaper settlements.

Caps, Thresholds, and Incomes

The SSAG have ceiling provisions — when the payor's income is very high (as of writing, verify the current income cap), the formula is not applied mechanically, and the court exercises broader discretion. Similarly, the guidelines contemplate minimum income levels below which spousal support may not be appropriate at all. These thresholds shift as the guidelines are updated, so always work with current figures when you are actually calculating a potential range.

Frequently asked questions