Can the judge raise a new issue
after the evidence is closed?

By Jonathan Kleiman, Barrister & Solicitor · Published August 2026

You have finished giving evidence. The other side has finished. Both of you have made your closing submissions. Then, after everyone has left, a written order or endorsement arrives raising a different legal theory: one nobody pleaded, argued, or had a chance to answer.

Can that happen in Ontario Small Claims Court?

Not fairly, without giving both sides a real opportunity to meet the new issue. Small Claims Court procedure is flexible, but flexibility does not mean a party can be found liable on a case they were never told they had to answer.

This matters most where the new theory changes the case in a serious way: for example, turning an unpaid-invoice dispute into an allegation of fraud, misrepresentation, conspiracy, or some other claim that needs different evidence and different cross-examination.

Why does a late new issue matter so much?

Because once the evidence is over, the affected party has lost every practical way to answer the new allegation: witnesses, documents, cross-examination, and submissions on the issue actually being decided. Small Claims Court is designed to be faster, simpler, and less expensive than ordinary civil litigation. Rule 1.03(1) of the Small Claims Court Rules says the rules are to be liberally construed to secure the just, most expeditious and least expensive determination of every proceeding on its merits, and s. 25 of the Courts of Justice Act directs the court to hear and determine matters in a summary way and to make orders that are just and agreeable to good conscience.

That means a deputy judge can manage the case actively. They can ask questions. They can address procedural defects. They can permit amendments in appropriate cases, and they routinely overlook technical drafting problems, especially where a party is self-represented.

But there is an important limit, and it does not come from any single rule so much as from the basic requirements of procedural fairness: you still have to know the case you must meet.

If a new issue appears only after the evidence is over, the affected party may have lost the chance to:

• Find and call the right witness
• Produce documents that answer the new allegation
• Test the other side's evidence through cross-examination
• Decide whether to take a different position at trial
• Make closing submissions on the actual issue being decided

That is not a technical objection. It goes to whether the hearing was fair. Preparation is built around the pleaded case, which is exactly why I tell people that preparing for a Small Claims trial starts with reading the claim and defence closely: they define the dispute you are getting ready to fight.

Can the court amend a claim after the trial?

Sometimes, but a late amendment is not automatically harmless: the real question is whether the change creates prejudice that cannot be fixed fairly. Under Rule 12.01 of the Small Claims Court Rules, a party can amend a claim or defence as of right by filing and serving the amended document at least 30 days before trial. Closer to trial, or at trial, an amendment needs the consent of the parties or the court's permission. The court also has broad authority to cure procedural irregularities (Rule 2.01) and, where necessary in the interest of justice, to dispense with compliance with any rule (Rule 2.02).

So the real question is not simply, "Can the document be amended?" The question is: does the change create prejudice that cannot be fixed fairly?

A minor clarification may be manageable. Correcting a date, clarifying a calculation, or better describing facts already fully explored at trial may not require the case to start again.

A new cause of action is different.

If the proposed amendment introduces a new allegation that changes what must be proved, or changes the evidence the other party would have called, the court should not decide the case on that new basis without giving the affected party a meaningful chance to respond.

What does Rodaro v. Royal Bank of Canada say?

The Ontario Court of Appeal held that a court should not find liability on a theory that was never pleaded, tested through evidence, or addressed in argument. The Court of Appeal addressed this basic fairness principle in Rodaro v. Royal Bank of Canada, 2002 CanLII 41834 (ON CA). The trial judge had found liability on a theory that emerged for the first time in his own reasons, and the Court of Appeal held that this was unfair: lawsuits are to be "decided within the boundaries of the pleadings," and a theory that was never tested through the adversarial process cannot safely support a judgment.

The case is often cited for the proposition that parties are entitled to know the case they must meet. A court should not decide liability on an unpleaded theory that was never properly put in issue, tested through evidence, or addressed through cross-examination.

That principle is especially important where the new theory first appears in the judge's reasons or in a written order issued after the parties have left. By then, the evidence is over. The affected party has no practical way to answer it.

Small Claims Court is more informal than the Superior Court. It is not less fair.

From my experience

From my experience, the pleadings in Small Claims Court get treated casually right up until the moment they matter enormously. Parties, and sometimes the court, talk about the "real dispute" as if the paperwork were a formality. Most of the time that informality is harmless, because the trial stays inside the case everyone prepared for. The trouble starts when someone treats that same informality as a licence to reshape the case after the evidence has closed.

The version of this I find most troubling is the quiet one: no dramatic mid-trial application, just an endorsement that arrives weeks later analyzing the dispute through a theory nobody argued. The party on the wrong end of it usually cannot articulate the legal problem. They just know they were never asked about the thing they lost on. That instinct is correct, and it has a name: procedural fairness. The objection has to be made deliberately and on the record, because silence reads as acquiescence.

How does this happen in practice?

The pattern is a trial run on the pleaded case, followed by a post-hearing endorsement that analyzes the dispute through a theory nobody argued. The sequence often looks like this:

1. The trial proceeds on the claim and defence that were filed.
2. Both sides finish their evidence.
3. Both sides deliver closing submissions.
4. After the parties have left, the deputy judge issues a written order or endorsement raising a different theory that they believe better fits the evidence.
5. The court invites written submissions on a proposed amendment, or treats the case as though it already includes the new claim.
6. Judgment turns on the new theory without reopening the evidence.

From the perspective of the party facing the new allegation, the problem is obvious: the ground has shifted after the opportunity to respond has passed. In plain terms, the claim has been changed after the evidence closed, and the judgment turns on a version of the case you never had a chance to answer.

Consider an ordinary contract dispute. The plaintiff says they performed work and were not paid. The defendant says the work was defective or incomplete. The trial is prepared and tried as a dispute about contract performance.

If, after the evidence closes and the parties have left, the court suggests that the defendant may have committed fraud, that is not just another way of describing the same dispute. Fraud is a serious allegation. It can require evidence about knowledge, intention, reliance, communications, and credibility that neither side prepared to address, because it was not part of the pleaded case.

What should you do if this happens?

Object clearly and promptly, explain the specific prejudice, ask for the evidence to be reopened rather than accepting a paper fix, and make sure the objection is on the record. If a deputy judge signals that they may decide the case on a new issue after the evidence has closed, do not assume that a short written response will solve the problem.

When the new issue arrives only in writing after the hearing has ended, the need to object clearly and ask to reopen the evidence is even more important. A short written response alone rarely restores the opportunity to call witnesses or cross-examine on the new theory.

Raise the concern promptly and respectfully.

1. Object clearly

Say that the proposed issue was not pleaded and was not part of the case tried. Do not leave the point implicit. The record should show that you objected to the court deciding the matter on a new theory without a fair chance to answer it.

2. Explain the prejudice

Be specific. Do not simply say the amendment is "prejudicial." Explain what you would have done differently if the issue had been raised earlier:

• Called a witness
• Obtained records
• Cross-examined differently
• Asked different questions of the other party
• Led evidence about intent, knowledge, reliance, or damages
• Made different submissions

The more concrete the prejudice, the stronger the objection.

3. Ask for a real remedy

If the court is prepared to allow the new issue, ask for the evidence to be reopened or for an adjournment. Depending on the situation, a fair remedy may include:

• Permission to file an amended pleading
• Disclosure of relevant documents
• Further oral evidence
• Further cross-examination
• A further hearing date
• An opportunity for both sides to make submissions after the evidentiary record is complete

A costs award or a short written submission may not cure the problem where the missing opportunity is evidence and cross-examination.

4. Preserve the issue

If the court refuses to reopen the evidence and decides the case on the new theory, make sure the fairness objection is on the record. A final Small Claims Court order can generally be appealed to the Divisional Court within 30 days, where the order is for the payment of more than $5,000 excluding costs (or for the recovery of personal property worth more than $5,000). An appeal is not a second trial, but a serious procedural-fairness problem can be a proper ground of appeal. I walk through the threshold, the deadline, and the realistic costs in how to appeal a Small Claims Court decision in Ontario.

What can you say in court (or in writing)?

Identify the procedural problem, explain the actual prejudice, and ask for a practical remedy, without arguing with the deputy judge. A simple version might be:

"Your Honour, we object to the case being decided on this new theory. It was not pleaded, it was not part of the trial we prepared for, and we have not had an opportunity to call evidence or cross-examine on it. If the Court is considering permitting an amendment, we ask that the evidence be reopened and that we be given a fair opportunity to respond."

If the issue arrives only in writing after the hearing:

"We object to the proposed amendment and to any decision based on this new theory. It was not pleaded and formed no part of the trial. We have had no opportunity to lead evidence or cross-examine on it. If the Court intends to allow the amendment, we ask that the evidence be reopened so we can meet the new claim."

The goal is not to argue with the deputy judge. It is to identify the procedural problem, explain the actual prejudice, and ask for a practical remedy.

Key takeaways

• You are entitled to know the case you must meet. Small Claims Court is informal about drafting, but a party should not be found liable on a theory nobody pleaded, tested, or argued.
• Late amendments turn on prejudice. A clarification of facts already explored at trial is one thing; a new cause of action after the evidence closes is another.
• Rodaro is the anchor. The Court of Appeal has held that liability should not rest on a theory that first emerges in the judge's reasons, untested by the adversarial process.
• Object on the record and be specific. Name the witnesses, documents, and cross-examination you lost; vague claims of prejudice carry little weight.
• Ask for a real remedy. Reopened evidence or a further hearing, not just brief written submissions, where the missing opportunity is evidence and cross-examination.
• Preserve the appeal route. Appeals go to the Divisional Court within 30 days, generally only where the order exceeds $5,000, and a preserved fairness objection is what makes that route viable.

Frequently asked questions

Can a judge decide a case on something that was not pleaded?

Not fairly, without giving both sides a real opportunity to meet the new issue. Small Claims Court procedure is deliberately flexible, and a deputy judge can manage the case actively, ask questions, and permit amendments in appropriate circumstances. But a party is still entitled to know the case they have to answer. The Ontario Court of Appeal made the point in Rodaro v. Royal Bank of Canada, 2002 CanLII 41834 (ON CA): a court should not find liability on a theory that was never pleaded, tested through evidence, or addressed in argument. If a genuinely new theory surfaces only after the evidence is closed, fairness generally requires that the affected party get a meaningful chance to respond, which may mean reopening the evidence.

The judge decided my case on something we never argued. What can I do?

First, act quickly, because the practical options narrow with time. If the decision feels unfair because the court changed the claim after the evidence closed, or decided the case on a theory nobody argued, that instinct has a legal name: procedural fairness. An amendment after the hearing raises the same problem as one at trial, only sharper, because the evidence is already over. If the court has invited submissions, object on the record, explain specifically what you would have done differently, and ask for the evidence to be reopened. If judgment has already been issued, the question becomes whether an appeal to the Divisional Court is available, and the 30-day clock is already running. Either way, this is a situation where a prompt consultation with a lawyer pays for itself, because the fairness objection has to be raised properly and preserved.

Can pleadings be amended after the trial has started or ended in Small Claims Court?

Sometimes. Under Rule 12.01 of the Small Claims Court Rules, a party can amend a claim or defence as of right by filing and serving the amended document at least 30 days before trial. Closer to trial, or at trial, an amendment needs the consent of the parties or the court's permission. The later the amendment comes, the harder the fairness question becomes. A minor clarification of facts already fully explored at trial may be manageable. A new cause of action that changes what must be proved is different, because the other party prepared, called evidence, and cross-examined on a different case.

What does "knowing the case you have to meet" actually mean?

It is a core principle of procedural fairness, sometimes called natural justice. Before a court decides something against you, you are entitled to know what is being alleged and to have a fair opportunity to answer it: to call witnesses, produce documents, cross-examine the other side, and make submissions on the actual issue being decided. Pleadings exist largely to serve this principle. They define the dispute so both sides can prepare. When the theory of liability changes after the evidence is closed, the affected party has usually lost every one of those opportunities.

Is Small Claims Court allowed to be informal about pleadings?

Yes, up to a point. Rule 1.03(1) says the Small Claims Court Rules are to be liberally construed to secure the just, most expeditious and least expensive determination of every proceeding on its merits, and s. 25 of the Courts of Justice Act tells the court to hear and determine matters in a summary way and make orders that are just and agreeable to good conscience. Deputy judges routinely overlook technical drafting problems, especially with self-represented parties, and that is as it should be. But informality about drafting is not the same as deciding the case on an issue nobody raised. Small Claims Court is more informal than the Superior Court. It is not less fair.

What should I do if the deputy judge raises a new legal theory after the hearing ends?

Respond promptly, and put your objection on the record. State clearly that the issue was not pleaded and was not part of the case that was tried. Explain the specific prejudice: the witnesses you would have called, the documents you would have produced, the cross-examination you would have conducted, and the submissions you would have made. Then ask for a real remedy. If the court is inclined to allow the new issue, ask for the evidence to be reopened, for a further hearing date, or for an adjournment with directions, rather than accepting a short round of written submissions that cannot replace evidence and cross-examination.

Can I appeal if the court decided my case on an unpleaded issue?

Possibly, if the appeal is available at all. A final order of the Small Claims Court can be appealed to the Divisional Court within 30 days, but only where the order is for the payment of more than $5,000 excluding costs, or for the recovery of personal property worth more than $5,000. An appeal is not a second trial, but a serious procedural-fairness problem, such as liability decided on a theory the losing party never had a chance to answer, can be a proper ground of appeal. That is why preserving the objection matters: the record should show that you raised the fairness concern and asked for the evidence to be reopened.

Why is a late fraud allegation treated differently from a contract claim?

Because it changes what has to be proved and how the trial should have been run. An ordinary contract dispute turns on what was agreed, what was performed, and what was paid. Fraud is a serious allegation that requires evidence about knowledge, intention, reliance, and credibility, and it invites a very different cross-examination. It also carries reputational consequences and can affect costs and enforcement. Turning an unpaid-invoice case into a fraud case after the evidence has closed is not a relabelling of the same dispute. It is a new case, and the party facing it prepared for a different one.

What remedies can I ask for if the court allows a new issue late in the case?

Ask for whatever restores a fair opportunity to meet the new case. Depending on the situation, that can include permission to file an amended pleading in response, disclosure of documents relevant to the new issue, further oral evidence, further cross-examination on the new theory, a further hearing date, and submissions from both sides after the evidentiary record is actually complete. Be cautious about accepting a costs award or a brief written response as a cure. Where the missing opportunity is evidence and cross-examination, paper submissions alone rarely fix the problem.

Final thoughts

Small Claims Court is meant to be flexible. That flexibility helps people resolve disputes without the cost and complexity of ordinary civil litigation.

But the rules do not permit a moving target. The court's mandate is a just determination of the proceeding on its merits, and its power to amend pleadings or dispense with procedural requirements must be exercised consistently with fairness to both sides. Once the evidence is over, a genuinely new theory of liability cannot fairly become the basis for judgment unless the affected party is given a real chance to meet it. If that means reopening the evidence or scheduling a further hearing, that may be what fairness requires.

If a new issue has been raised in your Small Claims Court case, whether you are the plaintiff or defending a claim, or you are considering an appeal after an unfair trial process, get advice quickly. The right response depends on the exact claim, what happened at trial, and whether the evidence can still be fairly reopened. Call 416-554-1639 or book a free consultation.