Spousal Support in Ontario: How Mediation Settles It
For separating couples, spousal support is often the most difficult issue to resolve. Whether it gets paid, how much, for how long, and what triggers a change are questions with real financial consequences for both parties. They are also questions most couples find hard to discuss with each other.
You may have seen it called alimony, spousal maintenance, marital support, or just support. In Ontario family law, the formal term is spousal support: payments made by one spouse to the other after the relationship ends, to address the financial impact of the separation.
At Sage Harmony, we help couples work through spousal support in mediation, alongside the other issues that come with separation. We draft the separation agreement that records the terms, and we are insured for separation agreement drafting. Independent legal advice from each party’s own family lawyer before signing is recommended but not required.
If you’d like to discuss your situation, contact us to start the intake process. Or read below for a guide to how spousal support works in Ontario.
Important: This page provides general information about spousal support in Ontario. It is not legal advice. Sage Harmony does not act as legal counsel to either party. We recommend each party consider obtaining independent legal advice from their own family lawyer before signing any separation agreement.
Alimony, Marital Support, and Spousal Support: What’s the Difference?
These are different terms for the same thing. Alimony is the American term, still widely used in conversation and online searches but not the legal term in Canada. Marital support and spousal maintenance are also informal terms for the same concept. In Ontario family law, the formal term is spousal support, used in the federal Divorce Act and Ontario’s Family Law Act.
The substance is the same: one spouse pays the other, periodically or in a lump sum, to address the financial consequences of the relationship and its end.
Who Is Entitled to Spousal Support?
Spousal support is not automatic. A party seeking support must establish entitlement on one of three grounds:
Compensatory entitlement. Where one spouse made career sacrifices for the relationship (taking time off to raise children, supporting the other spouse’s career, moving for the other’s job) and is left financially disadvantaged as a result.
Non-compensatory entitlement (needs-based). Where there is a significant gap between the spouses’ financial circumstances at separation, and the lower-income spouse needs support to maintain a reasonable standard of living relative to what they had during the relationship.
Contractual entitlement. Where the spouses themselves agreed (in a marriage contract or cohabitation agreement) that support would be payable on separation.
Most spousal support claims rely on one or both of the first two grounds.
Do Common-Law Partners Have Spousal Support Rights?
Yes, in Ontario. Common-law partners can claim spousal support under the Family Law Act if they have either:
• Cohabited continuously for at least three years, or
• Are in a relationship of some permanence and have a child together (natural or adopted)
The threshold is different from married couples (where any married spouse can claim), but once the cohabitation threshold is met, common-law partners have substantially similar spousal support entitlements to married spouses.
This is one of several important differences between Ontario’s treatment of married couples and common-law couples. The property-division rules are different (equalization applies only to married spouses), but spousal support is broadly the same.
How Spousal Support Is Calculated
Calculating spousal support involves three questions: whether support is payable, how much, and for how long. Determining spousal support is rarely a single-step exercise. Spousal support law in Ontario relies on a framework called the Spousal Support Advisory Guidelines (SSAG), which provide the ranges used by courts, lawyers, and mediators across Canada. The Guidelines are not binding, but they have become the de facto standard. Any spousal support negotiation in Ontario starts with what the SSAG suggests and works from there.
The Guidelines provide two main formulas:
Without-Child Support Formula. Used when there are no dependent children. The amount of support is based on the income gap between the parties, multiplied by 1.5% to 2% per year of the relationship, capped at 50%. Duration runs from a low range of 0.5 years per year of relationship to a high range of 1 year per year of relationship.
For relationships of 20 years or more, or where the years of cohabitation plus the recipient’s age at separation total at least 65 (the “rule of 65”), the duration is indefinite.
With-Child Support Formula. Used when there are dependent children. More complex, because child support is calculated first and spousal support is calculated on what is left. The formula considers each party’s after-tax income and produces both an amount range and a duration range.
The SSAG produce ranges, not single numbers. The negotiation within mediation is usually about where in the range the right number sits, not whether the Guidelines apply at all.
Length of Relationship Matters
Length of cohabitation (including premarital cohabitation) is the most significant single factor. As a rough guide:
• Under 5 years. Short-term support, often a few years at most. Compensatory claims are harder to establish.
• 5 to 15 years. Medium-term support. Duration typically scales with the length of the relationship.
• 15 to 20 years. Long-term support, often indefinite for older spouses.
• 20+ years or rule of 65. Indefinite duration, subject to review.
“Indefinite” does not mean “forever.” It means without a fixed end date. Indefinite support can still be reviewed and changed (or terminated) when circumstances change, most commonly when the recipient becomes self-sufficient, the payor retires, or the recipient remarries or repartners.
Periodic Support vs. Lump Sum
Spousal support can be paid as periodic payments (usually monthly) or as a lump sum (one-time payment, sometimes funded from property division).
Periodic payments are the default. They allow the support to adjust to changes in income, and they are tax-deductible to the payor and taxable to the recipient, which often makes them tax-efficient when there is a meaningful income gap.
Lump sum payments are increasingly common, particularly where:
• The parties want a clean break and no ongoing financial relationship
• The payor has the assets to fund a lump sum (often from the matrimonial home)
• There is concern about future enforcement
• The recipient is older and unlikely to remarry
Lump sums are not tax-deductible or taxable. The amount is usually calculated by discounting the present value of future periodic payments using an appropriate discount rate.
We see both arrangements regularly in mediation. The right choice depends on the parties’ priorities, the assets available, and how much certainty each side wants.
Tax Treatment
The tax treatment of spousal support depends on the type and the timing:
• Periodic spousal support paid under a written agreement or court order is tax-deductible to the payor and taxable to the recipient. The agreement must meet specific Canada Revenue Agency requirements: in writing, signed, payments made on a periodic basis.
• Lump sum spousal support is neither deductible nor taxable.
• Periodic payments made before a written agreement is in place are not deductible. This is one of several reasons to formalize the agreement promptly.
For families where the tax planning is significant (high incomes, business income, retained earnings), we work with the parties’ accountants to make sure the structure is right.
What Gets Negotiated in Mediation
In a spousal support mediation, the conversation usually covers:
Income and earning capacity. Not just current income, but what each party can reasonably be expected to earn going forward. “Imputed income” (assigning a higher figure to a party who is underemployed without good reason) is one of the trickier areas.
The SSAG ranges. Whether to settle at the low end, mid-range, or high end of the Guidelines, and the rationale. The negotiation often centres on which factors push the number within the range.
Duration. Particularly important for relationships in the 5 to 20-year range, where there is real variation in what’s reasonable.
Lump sum or periodic. The structural choice, with attention to tax treatment and to each party’s preference for clean break versus flexibility.
Review and termination triggers. What changes would trigger a review or termination (retirement, cohabitation, remarriage, change in income, the recipient achieving self-sufficiency).
Security. Whether the payor will hold life insurance to secure ongoing payments, and how much.
When Spousal Support Is Waived
Some couples agree that no spousal support will be paid. A waiver of spousal support is enforceable in Ontario, but courts have set them aside where one party was pressured, did not have a clear understanding of what they were giving up, or where circumstances at the time of separation were significantly different from what was expected when the waiver was signed.
A waiver included in a properly drafted separation agreement, with both parties clearly understanding what they were giving up, is generally upheld. Independent legal advice is particularly worth considering where spousal support is being waived, since the right being given up is significant and the waiver can be hard to undo later.
Reviewing and Changing Spousal Support
Spousal support arrangements do not necessarily end with the separation agreement. They can be reviewed and changed when circumstances change.
Material changes in circumstances commonly include:
• A significant change in either party’s income (loss of employment, promotion, retirement, disability)
• The recipient becoming self-sufficient
• The recipient remarrying or beginning a new cohabiting relationship
• The payor retiring at a reasonable age
• A change in the children’s needs that affects either party’s earning capacity
Where the separation agreement included a review clause, the parties typically follow the process set out in the agreement. Where there is no review clause, the party seeking a change can negotiate with the other or, failing that, apply to the court.
We mediate spousal support changes regularly, often years after the original agreement. Mediation is usually faster and less expensive than a court application, and it allows the parties to find a workable adjustment rather than have one imposed.
How Mediation Settles Spousal Support
Spousal support is one of the issues where mediation does its most useful work. The reasons:
There is real room to negotiate. Unlike child support, where the Federal Child Support Guidelines produce a specific number, spousal support involves ranges, judgments, and trade-offs.
The parties know their circumstances better than anyone else. Mediation lets you weigh factors a court or external lawyer would never see: the family’s history, the children’s situations, future plans, what each party wants from the next chapter.
Trade-offs become possible. Mediation allows for creative solutions: a larger share of the matrimonial home in exchange for lower spousal support, or a lump sum funded from a pension division, or stepped support that decreases over time as the recipient transitions to self-sufficiency.
You avoid years of conflict. Litigated spousal support cases routinely take 18 to 36 months and cost tens of thousands of dollars per side. A mediated agreement is usually finalized in a few months.
At Sage Harmony, spousal support is part of the broader separation negotiation. We work through it alongside parenting, child support, property division, and the matrimonial home. The interconnections matter. For example, the matrimonial home decision often affects what spousal support arrangement is workable, and a generous property settlement can sometimes substitute for ongoing support.
When Mediation Isn’t Right
Not every spousal support situation fits mediation. Mediation usually isn’t appropriate when:
• One party has been controlling the household finances and the other has limited financial knowledge or access. This power imbalance can make good-faith negotiation difficult. Sometimes a Certified Divorce Financial Analyst can level the playing field; in other cases the formal disclosure tools of the court process are necessary.
• One party is hiding income or assets. Mediation depends on accurate disclosure. Where there is a real suspicion that income is being concealed (cash businesses, undeclared income, hidden assets), the court’s disclosure processes may be required.
• There has been domestic violence or coercive control. Where one party is not safe to negotiate freely, mediation may recreate the dynamic. Shuttle mediation (parties in separate virtual rooms) can help in some cases, but not all.
• One party refuses to engage in good faith. Mediation requires both parties to be working toward a settlement.
If we see any of these dynamics, we will tell you and help you think through alternatives.
Cost
Mediating spousal support, alongside the other issues in a separation, typically costs a fraction of litigating it. Most full mediated separation agreements (mediation, drafting, and ILA for both parties) come in at low thousands of dollars total, compared to tens of thousands per side for contested spousal support litigation.
We charge by the session for mediation and provide an estimate during the intake process.
Frequently Asked Questions
Is spousal support the same as alimony?
In substance, yes. Alimony is the American term; spousal support is the Canadian term. The legal framework in Ontario uses spousal support.
How long do I have to be married (or together) before spousal support is owed?
For married couples, there is no minimum. Any married spouse can claim spousal support, though shorter marriages produce shorter and smaller awards. For common-law couples, the threshold is three years of continuous cohabitation, or a relationship of some permanence with a child.
Will I have to pay spousal support if my spouse cheated?
In most cases, yes. Spousal support in Canada is not punitive. The court considers economic circumstances, not relationship conduct. Conduct only becomes relevant in rare cases involving extreme behaviour during the marriage.
Can spousal support and child support both be paid?
Yes. Child support is calculated first, on its own framework. Spousal support is then calculated taking the child support payment into account.
What happens to spousal support if I remarry?
If you are the recipient, your spousal support typically terminates or is significantly reduced on remarriage or substantial new cohabitation. Most separation agreements explicitly address this. If you are the payor, your remarriage doesn’t end your obligation, though it can affect ability-to-pay calculations.
What if my ex’s income changes after we sign the agreement?
Most well-drafted separation agreements include a review clause that addresses income changes. Without one, a significant income change is usually a “material change in circumstances” that supports a renegotiation or court application. Mediation is the faster route.
Can spousal support be paid as a lump sum?
Yes. Lump sum spousal support is becoming more common, particularly where the parties want a clean break, where the payor has the assets, or where reliability of future payments is a concern. The tax treatment differs from periodic payments.
Do I need a lawyer to negotiate spousal support?
You do not need a lawyer to negotiate. Sage Harmony mediates and drafts the agreement, and we are insured for separation agreement drafting. Independent legal advice from your own lawyer before signing is recommended but not required. ILA is particularly worth considering where spousal support is being waived or where the amount is significantly outside the SSAG range.
Start the Conversation
If you and your spouse are working through separation, we’d be glad to help you negotiate spousal support, alongside the other issues, through mediation. Contact Sage Harmony to start the intake process.