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Ontario Family Law Guide | 2025

Spousal Support in Ontario
Entitlement, Amount & Duration

Updated 2025Ontario LawLexaltico LLP

Spousal support is not automatic in Ontario. Whether it is owed, how much, and for how long are determined by a combination of legal principles and the Spousal Support Advisory Guidelines. This guide explains entitlement, the SSAG ranges, and what happens when circumstances change.

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What’s in this guide

  1. Is spousal support owed?
  2. The three grounds for support
  3. The Spousal Support Advisory Guidelines
  4. How amount and duration are calculated
  5. Changing a support order
  6. Tax treatment
  7. Frequently asked questions

1. Is Spousal Support Owed?

Unlike child support, which is presumptively owed in any amount determined by the Guidelines, spousal support requires a finding of entitlement first. Not every separating couple owes spousal support. Entitlement depends on the facts of each case, evaluated against the legal grounds for support under the Divorce Act and Family Law Act.

Spousal support is not a reward for the “good” spouse or a punishment for the spouse who wanted out. It is compensation for economic disadvantage caused by the marriage or its breakdown, or a needs-based supplement for a spouse who cannot achieve economic self-sufficiency.

2. The Three Grounds for Spousal Support

GroundWhat It MeansTypical Scenario
Compensatory supportThe marriage or its breakdown caused economic disadvantage, e.g., one spouse left the workforce to raise children, supporting the other’s career advancement.Long marriages where one spouse was primary caregiver. Short marriages where a spouse gave up a career to relocate for the other’s job.
Non-compensatory (needs-based) supportOne spouse cannot achieve economic self-sufficiency and the other has the ability to pay.Long marriages; older spouses without labour force experience; spouses with health limitations.
Contractual supportThe parties agreed to support in a marriage contract or separation agreement.Pre-nuptial agreements or separation agreements that include support provisions.

For short marriages without children, spousal support entitlement is less common. For long marriages, particularly where one spouse was primarily responsible for childcare and the other’s career advanced significantly, spousal support is almost always in play.

3. The Spousal Support Advisory Guidelines (SSAGs)

The Spousal Support Advisory Guidelines (SSAGs), published by the federal Department of Justice, provide ranges for the amount and duration of spousal support based on a formula. The SSAGs are advisory, not mandatory, but courts and lawyers use them as the primary framework for calculating support in most cases.

Two different formulas apply depending on whether there are children:

4. How Amount and Duration Are Calculated

Under the Without Children formula, support is typically in the range of 1.5% to 2% of the difference in gross incomes per year of marriage, both for the amount and the duration. For example, for a 20-year marriage where one spouse earns $120,000 and the other $30,000:

These are ranges, not fixed amounts. Courts have discretion within (and occasionally outside) the SSAG ranges, taking into account specific circumstances. The actual award depends on the parties’ full financial pictures, health, employability, and the specific history of the marriage.

Indefinite support, support with no fixed end date, is typically awarded in long marriages (over 20 years) and in cases where the recipient spouse is unlikely ever to achieve economic self-sufficiency due to age or health.

5. Changing a Support Order

Spousal support orders can be varied if there is a material change in circumstances, such as the payor losing their job, the recipient remarrying or entering a new relationship and achieving greater self-sufficiency, a significant change in either party’s health, or the recipient completing education and increasing their income.

Termination is not automatic. Spousal support does not automatically end because the recipient starts a new relationship or cohabits with someone new. It can be grounds for a variation application, but the court assesses whether the new relationship has actually changed the recipient’s financial circumstances. Cohabitation alone is not enough.

6. Tax Treatment of Spousal Support

Spousal support has different tax treatment than child support. Periodic (monthly) spousal support payments made pursuant to a written separation agreement or court order are:

Lump sum spousal support payments do not receive this tax treatment, they are generally not deductible or taxable. This means periodic support is often more tax-efficient than a lump sum, and the after-tax cost to the payor is often significantly lower than the gross payment amount.

7. Frequently Asked Questions

Am I automatically entitled to spousal support in Ontario?

No. Spousal support requires a finding of entitlement. Not every separating couple owes support. Entitlement depends on whether the marriage caused economic disadvantage to one spouse, whether one spouse has unmet needs the other can address, or whether there was an agreement to pay support.

How long does spousal support last?

The duration ranges from a short period (sometimes months for short marriages) to indefinite (for long marriages, particularly where one spouse will never achieve full economic self-sufficiency). The SSAG provides duration ranges roughly equal to half the length of the marriage for the Without Children formula, so a 10-year marriage typically generates support in the range of 5–10 years.

Does spousal support end if I remarry?

Remarriage does not automatically terminate spousal support under Ontario law. It is grounds for a variation application, but the court will look at whether the new marriage has actually improved the recipient’s financial circumstances sufficiently to reduce or end support.

Can spousal support be paid as a lump sum?

Yes. A lump sum payment can settle a spousal support obligation permanently. However, lump sums do not receive the same tax treatment as periodic payments (they are not deductible for the payor), and they must account for the possibility that circumstances will change. The payor may end up overpaying if the recipient’s situation improves quickly, and underpaying if the recipient’s needs continue longer than anticipated.

What if my ex stops paying spousal support?

If spousal support is set out in a court order or a separation agreement filed with the court, the Family Responsibility Office (FRO) can enforce it, just as with child support. FRO can garnish wages, intercept tax refunds, suspend driver’s licences, and take other enforcement steps. If support is only in a private separation agreement not filed with the court, enforcement requires a separate court proceeding.

Is common-law spousal support the same as married spousal support?

Common-law partners in Ontario who have cohabited for at least three years (or for any period in a relationship of some permanence if there is a child) have the same spousal support rights as married couples under the Family Law Act. The same grounds, the same SSAG framework, and the same enforcement mechanisms apply.

Questions About Spousal Support?

Our Toronto family lawyers advise on spousal support entitlement, SSAG calculations, variation applications, and lump sum settlements across the GTA. Free consultation.

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