Motion to Vary Parenting in Ontario
- •Asking the Ontario Superior Court of Justice (Family Court) to change an existing parenting order requires you to satisfy two tests in this order: (1) a material change in circumstances since the order was made (Gordon v. Goertz [1996] 2 SCR 27), and (2) that the proposed change is in the best interests of the child (Divorce Act s.16(3)).
- •The supporting affidavit is filed under Ontario Family Law Rules, Rule 14 · Divorce Act, ss. 16, 17 · Children's Law Reform Act, s. 21 using Form 14A (Family Law Rules). The affidavit must clearly identify the existing order, the change since, and a specific proposed arrangement the court can copy into a new order.
- •Most self-rep variation motions fail at the threshold — not because the case is weak, but because the affidavit doesn't clearly establish the material change before reaching for the best-interests argument.
Filing procedure in Ontario
Motions on this topic in Ontario are governed by Ontario Family Law Rules, Rule 14 · Divorce Act, ss. 16, 17 · Children's Law Reform Act, s. 21. The supporting affidavit is filed using Form 14A (Family Law Rules).
Filed with the Ontario Superior Court of Justice (Family Court). Each Ontario family courthouse has slightly different motion-day schedules and filing-counter procedures — check the courthouse-specific page for your city before filing.
What this motion is for
A motion to vary parenting asks the court to change an existing parenting order. The original order is presumptively final — courts will not casually re-litigate parenting arrangements. To clear the threshold, you must prove that circumstances have materially changed since the order was made.
The two-stage test (Gordon v. Goertz)
The Supreme Court of Canada in Gordon v. Goertz [1996] 2 SCR 27 set the controlling test. Two stages, applied in order:
- Material change in circumstances. There must be a change since the last order that (a) is significant, (b) was not contemplated by the court at the time of the order, and (c) actually happened.
- Best interests of the child. ONLY if you clear stage 1 does the court go on to assess whether the proposed variation is in the children's best interests under Divorce Act s.16(3) factors.
Both stages are needed. A material change without a best-interests case doesn't get an order. A best-interests case without a material change doesn't even get heard.
What counts as a material change
| Qualifies | Does NOT qualify (without more) |
|---|---|
| Parent relocating geographically | Parent moving across town |
| Major change in either parent's income or employment | Mild fluctuation in income |
| Child reaching a developmental milestone (starting school, adolescence) | Child getting older without other changes |
| New evidence of abuse, neglect, or family violence | Old grievances re-litigated |
| Existing schedule has stopped working in practice (documented) | Disagreement about whether schedule works |
| Mental-health crisis or substance-use issue newly emerging | Long-standing personality differences |
What evidence the court will weigh
Your affidavit needs to anchor every claim with dated, witnessed, first-person observation. Include exhibits where possible.
- Copy of the existing order being varied (Exhibit A by convention)
- Dated description of what has changed and when
- Witnesses who can corroborate the change (named, ideally with their own affidavit)
- Documents that prove the change — texts, photos, school records, employer letters, medical records
- Best-interests analysis addressing each s.16(3) factor with concrete examples
- Specific proposed arrangement — exact schedule, exchange logistics, decision-making structure
Common mistakes that sink variation motions
- Re-litigating the original order instead of focusing on what has changed since
- Claiming the schedule 'doesn't work' without dated examples of when it broke down
- Asking for vague variations ('more time with my kids') instead of specific terms the court can enter into an order
- Failing to address best-interests factors — leaving the other side to fill in the gaps
- Including legal argument in the affidavit (save argument for oral submissions)
- Filing without proof of the original order attached
Frequently asked
How long has to pass before I can bring a variation motion?
There's no minimum time. But a court is unlikely to find a material change if the order is fresh and nothing significant has happened. Cosmetic disagreements about an order made last week won't get past stage one of Gordon v. Goertz.
Can my child's preference be a material change?
Yes — but the weight depends on the child's age, maturity, and capacity to form independent views. A teenager's reasoned preference for a different arrangement, particularly if connected to schooling or extracurriculars, can be material. A small child wanting to see one parent more during a single weekend isn't.
What if the other parent agrees to the variation?
Consent variations are dramatically faster. File a consent order signed by both parties with the court — many courthouses process these on paper without a hearing. You still need to address best-interests in the affidavit, but the material-change threshold is essentially conceded.