Gelman Family Law Lawyers

Over 200+ 5-Star Google Reviews

Book Consult

New Partners and Spousal Support: When Does “Re-Partnering” Change the Numbers?

Published: September 14, 2026

Last Updated: September 14, 2026

Book Consult1-844-736-0200

Table of Contents

New Partners and Spousal Support: When Does “Re-Partnering” Change the Numbers?

When a former spouse enters a new relationship after separation, questions about spousal support often follow. It is not uncommon for a support payor to wonder whether their obligation should be reduced if their former spouse moves in with a new partner. Likewise, support recipients may be concerned that beginning a new relationship could jeopardize their entitlement to support.

The reality is that re-partnering does not automatically change spousal support in Ontario. Whether support should be varied depends on the specific circumstances of the new relationship and whether it has resulted in a material change in circumstances.

In this blog, we discuss how Ontario courts assess the impact of new relationships on spousal support, what constitutes a material change in circumstances, the distinction between cohabitation and remarriage, and the circumstances in which re-partnering may justify a variation of an existing support order or separation agreement.

If you have questions or concerns about your obligations or entitlements to spousal support in Ontario, speak with our Toronto spousal support lawyers at Gelman & Associates today.

Understanding the Purpose of Spousal Support

Before considering how a new relationship may affect support, it is important to understand why spousal support is awarded in the first place.

Under Ontario family law, spousal support is intended to address the economic disadvantages of a relationship breakdown. Depending on the circumstances, support may compensate a spouse for economic consequences arising from the relationship or its breakdown, address financial hardship following separation, or provide assistance where a spouse is unable to meet their reasonable needs.

When determining spousal support, courts may consider factors such as:

  • The length of the relationship;
  • The roles each spouse assumed during the relationship;
  • The financial means and needs of both parties;
  • Any economic advantages or disadvantages arising from the relationship or its breakdown; and
  • The objective of promoting economic self sufficiency where appropriate.

Spousal support is determined based on financial circumstances rather than relationship status alone. As a result, entering a new relationship does not automatically result in a change to an existing support arrangement.

When a New Relationship May Affect Spousal Support

A new relationship becomes legally relevant when it affects the financial circumstances of either party.

In many cases, a support recipient who begins living with a new partner may benefit from shared housing costs, shared household expenses, or other forms of financial support. If those changes significantly reduce the recipient’s financial need, the payor may have grounds to seek a review of the existing support arrangement.

However, cohabitation alone is rarely enough to justify a variation. Courts are primarily concerned with whether the new relationship has affected the recipient’s financial need.

Some factors that may be considered include:

  • Whether household expenses are shared;
  • The extent to which finances have been integrated;
  • Whether the new partner contributes to living expenses, in accordance with their income
  • The overall financial circumstances of the household; and
  • The duration and stability of the new relationship.

The analysis is highly fact-specific, and no single factor will determine the outcome.

What Constitutes a Material Change in Circumstances When Varying Spousal Support?

A party seeking to change an existing support order or agreement must generally establish that there has been a material change in circumstances.

A material change is one that is significant, ongoing, and was not reasonably contemplated when the original support arrangement was established. The change must be substantial enough to affect the fairness of the existing support obligation.

In the context of re-partnering, examples that may constitute a material change include:

  • A significant reduction in the recipient’s living expenses due to a new cohabiting relationship;
  • Financial support being provided by a new partner, in accordance with their income;
  • A substantial improvement in the recipient’s overall financial position; or
  • Other changes that materially affect need or entitlement.

Casual dating relationships or short-term living arrangements will not typically be sufficient to establish a material change in circumstances.

Cohabitation Versus Remarriage

Many people assume that remarriage automatically terminates spousal support. In Ontario, this is not necessarily the case.

While remarriage may be relevant to their analysis, courts do not automatically terminate support simply because a recipient has married someone new. Instead, the focus remains on whether the new relationship has altered the recipient’s financial circumstances in a meaningful way.

Similarly, cohabitation does not automatically reduce or eliminate support. Rather than focusing solely on whether the parties are cohabiting or married, courts will consider the nature of the relationship and the extent to which it has affected the parties’ financial circumstances.

For example, a long-term cohabiting relationship involving significant financial integration may have a greater impact on support than a recent marriage in which the parties maintain separate finances.

The Importance of Financial Disclosure in Spousal Support Cases

Cases involving a variation of spousal support based on re-partnering depend heavily on facts and the available evidence.

The party seeking a variation must typically provide evidence demonstrating how the new relationship has affected the recipient’s financial circumstances.

Relevant evidence may include:

  • Income information;
  • Housing and living expenses;
  • Financial contributions made by the new partner in accordance with their income;
  • Property ownership arrangements; and
  • Other documentation demonstrating financial interdependence.

Full and accurate financial disclosure remains one of the most important aspects of any spousal support review.

Can a Separation Agreement Address Re-partnering?

In some cases, parties choose to address future re-partnering directly within their separation agreement.

For example, an agreement may provide that spousal support will be reviewed if the recipient begins cohabiting with a new partner for a specified period of time. Other agreements may provide for support to terminate upon remarriage or may state that future relationships will have no effect on support.

The enforceability of these provisions will depend on the wording of the agreement and the circumstances of the case. For this reason, it is important to ensure that any separation agreement is carefully drafted and reviewed by an experienced family law lawyer.

Seeking a Variation of Spousal Support

If you believe that your former spouse’s new relationship has significantly altered their financial circumstances, it may be appropriate to seek a variation of support.

However, parties should avoid making unilateral changes to support payments. Existing court orders and separation agreements remain enforceable until they are formally varied by agreement or court order.

Obtaining legal advice at an early stage can help determine whether a material change exists and whether a variation application is likely to succeed.

Are You Dealing with a Change in Spousal Support? Contact Gelman and Associates Today

Re-partnering does not, on its own, change spousal support.  While a new relationship may affect support in some cases, courts will consider whether there is cohabitation with shared household expenses, contributions toward rent or mortgage, or other financial support between the parties, rather than the mere existence of a new relationship.

At Gelman and Associates, our highly experienced family lawyers assist clients with all aspects of spousal support, including variation applications, separation agreements, and post-separation disputes. Whether you are paying or receiving support, we can help you understand your rights and take steps toward resolving your matter.

To discuss your specific circumstances and legal options, contact our office today to schedule a consultation.

Frequently Asked Questions - spousal support

No. The court is able to impute income if it feels that one of the spouses could be making more money but is deliberately working below his or her capability. The rules that allow imputing income were created to stop deliberate attempts on the part of one spouse to avoid the financial responsibility of spousal support.

A spousal support award amount can be changed either on agreement of the parties or upon application to the court seeking a modification. An application for support award modification can be made when there is a significant and ongoing change in circumstance to one of the parties such as a loss of a job.

Yes. In determining if there is an entitlement to spousal support, the court will consider (among other factors) the apportioning between spouses of the financial consequences which have arisen in consequence of the way in which they divided the childcare responsibility, pursuant to section 15.2(6) of the Divorce Act.

If one spouse sacrificed his or her place in the working world (and, in turn, own economic self sufficiency) in order to allow the other spouse to pursue professional opportunities (i.e. assuming responsibility for all chores within the domestic sphere, including raising of the children), then that spouse would have a compensatory entitlement to spousal support.

The Divorce Act and the Family Law Act both look at the recipient spouse’s contribution to the relationship and the economic consequences that evolve from the relationship. Here, “contribution” includes the labour put into the domestic side of the relationship.

A couple who is unmarried and have no children may also seek spousal support if they meet the cohabitation criteria under the Family Law Act of cohabitating together for at least 3 years.

An unmarried couple who has children together may seek an award of spousal support. They may do so based on one partner having a financial need that resulted from the end of the relationship and the financial consequences arising from the care of the children.

Spousal support is typically determined based on each spouse’s income and the roles that they played in the relationship while they were married. Courts typically refer to the Spousal Support Advisory Guidelines (SSAGs) when determining amounts, although these are not legally binding.

Spousal support must be paid until either the conditions for stopping payment as laid out in the agreement or court order have been met, the order has been changed by a court, or you and your former spouse have agreed to change your agreement.

Provided nothing in the arrangement infringes on Ontario law, it should be perfectly valid. This is a complex area, so be sure to seek legal advice.

Locations We Serve

Multiple offices to help serve you better

With numerous offices across Ontario, we make it easier for our clients to have access to our lawyers. Please note that offices marked with an (**) are satellite offices and require a consultation booked in advance. We are not able to accommodate walk-in appointments at these locations. Call us to book a free consultation today.

Still have family law questions?

Speak to a lawyer

If you need legal advice regarding spousal support matters in Ontario, contact our Toronto family law lawyers for a free consultation. Some conditions may apply.

Book Your Consult