In Ontario family law, you can generally amend your Form 8 Application or Form 10 Answer once without a judge’s permission, as long as the case has not yet been scheduled for trial. If it is too late, you must file a formal motion for permission, which currently carries a court filing fee of $127 CAD.
When you first start a family law case in Ontario, you file either a Form 8 Application or a Form 10 Answer. These documents, known as pleadings, set out your legal claims regarding spousal support, property division, or parenting time. However, life changes quickly. Perhaps you discovered hidden assets, or a child’s living situation has changed, requiring you to update your claims. You cannot simply cross out words with a pen; you must legally amend your pleading.
The rules for altering your original legal claims mid-litigation are strictly governed by Rule 11 of the Family Law Rules. Whether your case is at the Superior Court of Justice in Toronto, Ottawa, or Mississauga, you must follow the correct procedure to ensure your new claims are legally recognized by the judge. Making a mistake here can delay your case or cause your new evidence to be thrown out. Because court rules can be confusing, it is generally recommended to hire a family lawyer from our directory to help draft your amendments correctly. 📖
Step-by-Step Process to Amend Pleadings in Ontario
Amending a document requires a clear paper trail so the judge and your ex-partner know exactly what has been changed. Here is how the process generally unfolds in an Ontario family court.
Step 1: Determine if You Need the Court’s Permission
The first step is checking the timeline of your case. Under Rule 11, you have the right to amend your Application or Answer once without the court’s permission, provided the case has not yet been placed on the trial list. If you have already amended it once, or if a trial date is set, you cannot change it by right. You will need to file a formal motion to ask a judge for permission, or get written consent from your ex-partner’s law firm.
Step 2: Draft the Amended Document
When drafting the new Form 8 or Form 10, you do not just write a new version. Ontario courts require you to clearly show what was added or removed. You must underline all new text that you are adding to the document. If you are deleting something, you must strike a line through it (strikethrough). The word “AMENDED” must be written at the top of the very first page, along with the date of the amendment.
Step 3: Update Your Financial Statement
If your amended pleading changes any claims related to child support, spousal support, or the division of property, you must also swear and file an updated Form 13 or Form 13.1 Financial Statement. 💵 Judges need the most current financial picture as of May 2026 to make fair decisions about support obligations.
Step 4: Serve the Amended Pleading
You cannot just slip the new document into the court file. You must legally serve the amended Application or Answer on your ex-partner or their lawyer. If you are adding a completely new claim (for example, asking for decision-making responsibility when you previously only asked for child support), you typically must serve it via special service, which often means having a process server hand it to them directly.
Step 5: File at Your Local Courthouse
After the document has been properly served, you must file it at your local Superior Court of Justice or Ontario Court of Justice, along with a sworn Form 6B Affidavit of Service. This proves to the court clerk that the other side received the updated paperwork.
How Much Does it Cost in Ontario?
While the court does not usually charge a fee to file an amended pleading by right, there are costs associated if the case is complicated. Below are estimated costs in Canadian dollars (CAD):
| Requirement / Action | Estimated Cost (CAD) | Details |
|---|---|---|
| Standard Court Filing Fee | $0 | Filing an amendment by right usually has no government fee. |
| Motion Filing Fee (Form 14) | $127 | If you need a judge’s permission because it is too close to trial. |
| Process Server Fees | $75 – $150 | To physically hand the new documents to your ex-partner. |
| Law Firm Drafting Fees | $500 – $2,000+ | For a lawyer to carefully draft and underline complex legal claims. |
How Long Does the Process Take?
If you are amending by right, the process is as fast as your lawyer can draft, serve, and file the paperwork, typically taking 1 to 2 weeks. However, if you are forced to bring a motion for permission, getting a date to argue the motion before an Ontario family judge can take 2 to 4 months due to current court backlogs. ⌛
Frequently Asked Questions (FAQ)
What happens if I forget to underline the changes?
If you do not properly format the amended pleading with underlines and strikethroughs, the court clerk will likely reject the document. Proper formatting is mandatory so the judge can instantly see what new claims are being introduced.
Can my ex-partner respond to my new claims?
Yes. If you serve an amended Form 8 Application, your ex-partner is legally allowed to file an amended Form 10 Answer to defend against your new claims. They generally have 14 to 30 days to respond, depending on how they were served.
Will a judge always give permission to amend?
Not always. If you try to amend your pleadings at the very last minute right before a trial just to delay the process, a judge may deny your motion. You must have a valid reason for the delay, such as newly discovered evidence.
Does an amendment change my trial date?
It is possible. If your amendment introduces massive new issues (like questioning the validity of a marriage contract), the court may need to adjourn the trial so both sides can gather new evidence and conduct further questioning.
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