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ONTARIO JURISDICTION IN CROSS‑BORDER FAMILY LAW: KEY TAKEAWAYS

If you are reading this, you likely have a cross‑border divorce, parenting, or financial dispute and are trying to figure out whether Ontario is the right place to resolve your case. Here are the main points you need to know — and why you should read the full article at Cross Border Advisory Solutions.

  1. Ontario cannot hear your case just because you were married here or are Canadian

  • Marriage in Ontario, holding a Canadian passport, or “spending time” in Canada is usually not enough to give Ontario jurisdiction.
  • The real gatekeeper is “habitual residence”.

  1. Divorce jurisdiction: the one‑year rule matters

  • Under the Divorce Act, a court can grant a divorce in Ontario only if one spouse has been habitually resident in Ontario for at least one year before the proceeding starts.
  • If that one‑year period is not met, the Ontario court lacks jurisdiction, end of story.

  1. Foreign divorce can block or limit your spousal‑support claim

  • If your spouse obtained a foreign divorce and you either participated or were properly served and chose not to defend, Ontario may refuse to treat you as a “spouse” for spousal‑support purposes under the Divorce Act.
  • But the law is evolving: Rasaei v. Bahman. 2025 ONSC 2074 suggests that former spouses may still be able to claim support under the Family Law Act.  Warning – this case contradicts earlier appellate authority.  We likely do yet have the final word from the courts.

  1. Property is governed by “last common habitual residence”

  • Ontario will apply the Family Law Act’s property rules only if both spouses had their last common habitual residence in Ontario.
  • In many cross‑border cases (e.g., long‑time residents of New Jersey where wife moves to Ontario after separation), Ontario may deal with support and parenting, while property is governed by foreign law (e.g., New Jersey), creating a complex, two‑track file.

  1. Parenting: Ontario looks at where the child is “at home”

  • For parenting orders, the child must generally be habitually resident in Ontario at the time the application is filed (s. 22(1)(a), Children’s Law Reform Act).
  • The Supreme Court of Canada in Dunmore v. Mehralian, 2025 SCC 20, clarified that habitual residence is where the child is truly “at home,” not just where the parents plan to move.
  • Ontario also recognizes the Hague Convention on Civil Aspects of International Child Abduction (incorporated via CLRA s. 46), but relief may still be available even when the other country is not a party.

  1. Forum non conveniens: two courts, one fight

  • Frequently, both Ontario and another jurisdiction can claim jurisdiction.
  • The doctrine of forum non conveniens is then used to decide which court should hear the case, weighing factors like convenience, evidence, and fairness.
  • The outcome is highly uncertain and can change the entire course of your litigation.

  1. Coordinating counsel across borders is not optional

  • In cross‑border disputes, you may need to litigate in more than one jurisdiction and have counsel in each place communicate and coordinate strategy.
  • Without that coordination, you risk inconsistent orders, wasted costs, and tactical blunders.

Why the full Cross‑Border Advisory article is worth your time

If you are:

  • negotiating or litigating across international or provincial borders,
  • dealing with a foreign‑obtained divorce,
  • trying to figure out whether Ontario can deal with your support, parenting, or property claims,

this article gives you a practitioner‑level, no‑fluff breakdown of Ontario’s jurisdictional rules and how they could actually play out in cross‑border family law files.  But be careful.  It is just an article and is not legal advice for your own case.

👉 Read the full post on Cross Border Advisory Solutions: ONTARIO JURISDICTION IN CROSS‑BORDER FAMILY LAW CASES

This article provides general information only and does not constitute legal advice. Jurisdiction in cross-border family cases is highly fact-specific and may depend on the timing of proceedings, the legislation engaged, and the law of the competing jurisdiction. You should obtain tailored legal advice that reflects the specific facts of your own situation.

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