Motion vs Application in Ontario Family Court: What's the Difference?

People often use "motion" and "application" interchangeably when talking about family court, but in Ontario's Family Law Rules they mean very different things. Knowing which one you actually need — or which one has just been served on you — changes what documents you file, what deadlines apply, and what a judge is actually being asked to decide.

Here's the plain-language difference, and how the two fit together in a typical family case.

The Short Answer

Applications: How a Family Case Begins

An application is the document that opens a family court case. It sets out what you're asking the court for — a divorce, a decision-making responsibility and parenting time arrangement, child or spousal support, or a division of property — and it's served on the other party, who then has the chance to respond with an Answer. Everything else that happens in the case, including any motions, builds on top of this original application.

Motions: Asking for Something Within an Existing Case

A motion is a request made inside a case that's already underway. Rather than starting something new, a motion asks a judge to decide a specific, narrower issue — often on an urgent or interim basis — while the larger case is still working its way toward a conference, settlement, or trial.

Motions for Interim Relief

The most common reason to bring a motion is to get a temporary order before the whole case is resolved. Examples include an interim parenting schedule while a full case is pending, interim child or spousal support, or an order preserving property until the case is finished. Interim orders are meant to hold things steady, not to permanently decide the outcome.

The "Motion to Change": A Special Case

If you already have a final court order for support or parenting and your circumstances have genuinely changed, the standard way to ask a court to vary it is a motion to change, rather than starting an entirely new application from scratch. This keeps the case tied to the original order and its history, instead of duplicating the whole process.

Can You Bring a Motion at Any Point?

Generally, yes, once an application exists — but Ontario's Family Law Rules typically expect parties to attempt a conference with a judge before bringing most motions, so the court has a chance to help resolve or narrow the issue first. Urgent motions, where waiting for a conference date would cause real harm, are treated differently and can move faster. Whether your situation qualifies as urgent is a judgment call best made with legal advice, not assumed on your own.

Putting It Together

In a typical contested family case, you'll usually see one application, filed at the start, and then possibly several motions along the way — for interim support, an interim parenting schedule, or a specific procedural issue — before the whole case eventually resolves by agreement, settlement, or trial.

Frequently asked questions