You did the work or delivered the goods. You sent the invoice and it is still unpaid. The due date came and went, the reminders went unanswered, and now you are asking a practical question: if this ends up in Small Claims Court, what records do I need, and how should I put them in order?
This article answers that question for small businesses and sole traders in Ontario who are owed money. It does not cover whether to sue or how the whole case runs. It covers the paperwork: what to gather, how to organize it, and the three points in a Small Claims Court case where the court's own rules say your documents matter.
Why your records matter before you file anything
A Small Claims Court case about an unpaid invoice usually turns on a few plain questions. What did the customer agree to pay for? Did you do the work or deliver the goods? What did you bill, and when? What has been paid? What is still owing?
Your records answer those questions. The Rules of the Small Claims Court (O. Reg. 258/98) also set out when documents have to be attached, served and filed. Getting the records together early means you are not trying to rebuild a timeline from memory months later.
One limit to keep in mind: "The maximum amount of a claim in the Small Claims Court is $50,000" (O. Reg. 626/00, s. 1(1)), and one cause of action cannot be divided into two or more actions to bring it under that limit (r. 6.02). For what fits under the limit and how a case moves after it is served, see our article on contractor disputes in Ontario Small Claims Court.
The records to gather for an unpaid invoice
The agreement or quote
Start with whatever shows what the customer agreed to. That might be a signed contract, a written quote they accepted, a purchase order, a work order, or an email or text where they said yes to your price. If the scope changed along the way, keep the change orders or the messages that approved the extra work.
This is often the document a claim is based on. Under rule 7.01(2), paragraph 2, if a plaintiff's claim is based in whole or in part on a document, a copy must be attached to the claim. If it is unavailable, the claim must say why it is not attached.
The invoices
Keep a copy of every invoice for the job or account, not only the one that went unpaid. Each should show its date, what it covers, the amount and any payment terms that were on it. If you sent a final invoice or a statement of account, keep that too, with a record of how and when you sent it.
Proof the work was done or the goods were delivered
A customer who does not pay sometimes says the work was never finished or the goods never arrived. Records that show completion or delivery help answer that. Examples include signed delivery slips, a signed completion or sign-off sheet, dated photographs of finished work, timesheets, and receipts for materials bought for the job.
The payment history
Put together a clear record of every payment received: deposits, progress payments, partial payments and any cheque that was returned. Show the date and amount of each. From there you can show how you arrived at the balance you say is owing.
That number matters. A claim has to state the amount claimed and the relief requested (r. 7.01(2), para. 1, item iii). And if a defendant is noted in default, rule 11.02(1) lets the clerk sign default judgment for the part of the claim "that is for a debt or liquidated demand in money, including interest if claimed." Whether a particular claim fits that description depends on its facts, but a clean statement of what was billed and what was paid is a good place to start in any case.
The communications
Keep the emails, texts and letters about the job and the bill: payment reminders, any reply from the customer, any complaint about the work, and any promise to pay. Save them in a form that shows the date and who sent each one. A screenshot without a date is harder to rely on than the original message.
A note on timing
Ontario's Limitations Act, 2002 sets a basic limitation period. Section 4 says a proceeding shall not be commenced "after the second anniversary of the day on which the claim was discovered," and section 5 sets out when a claim is discovered. Under section 13, a signed, written acknowledgment of liability for a claim to a liquidated sum, or a part payment, can change the date the period runs from, subject to conditions in that section. That is one more reason to keep dated payment records and any written acknowledgment the customer gave you. The exact date for your situation is a question to ask a licensed professional, not one to estimate.
Three points where the rules say documents count
1. The claim itself
A case starts when the plaintiff files a plaintiff's claim (Form 7A) with the clerk (r. 7.01(1)). Rule 7.01(2) requires the claim to be written "in concise and non-technical language" and to describe the claim with reasonable certainty and detail, including "the date, place and nature of the occurrences on which the claim is based." As covered above, the document the claim is based on is attached, or the claim says why it is not.
A simple, dated timeline built from your records makes this part much easier to write.
2. Before the settlement conference
Under rule 13.03(2), at least 14 days before the settlement conference, each party must serve on every other party and file with the court a copy of any document to be relied on at trial that is not already attached to its claim or defence, along with a list of proposed witnesses. The court may award costs against a person who attends the settlement conference without having filed that material (r. 13.02(7)(b)).
In practice, the records you will rely on need to be ready well before trial, not gathered at the last minute.
3. Before trial
Rule 18.02(1) says a document or written statement served at least 30 days before the trial date, on all parties who were served with the notice of trial, "shall be received in evidence, unless the trial judge orders otherwise." Rule 18.02(2) lists the kinds of documents this covers, and the list names "a financial record, a receipt, a bill" and "a repair estimate," among others.
There is a condition. Under rule 18.02(3), a party serving one of these documents must append to it or include in it the name, telephone number and address for service of the witness or author. Another party may summon that person as a witness to cross-examine them (r. 18.02(4)). So it helps to know who prepared each record, and how to reach them.
How to organize the file
None of this needs special software. A folder, paper or digital, set up the same way each time, is enough:
- A one-page timeline. Date, place and what happened, in order: the quote, the acceptance, the work, each invoice, each payment, each reminder.
- A statement of account. Every invoice and every payment, with the balance you say is owing.
- The agreement documents, including any change orders.
- The invoices, in date order.
- Proof of completion or delivery.
- Payment records, including deposits, partial payments and returned cheques.
- Communications, in date order, showing sender and date.
Keep the originals safe and work from copies. Note who prepared each document, because rule 18.02(3) asks for that information if you serve it before trial.
A checklist before you decide on a claim
- I have the signed contract, accepted quote or message showing what the customer agreed to.
- I have every invoice for the job, with dates and amounts.
- I have something showing the work was done or the goods were delivered.
- I have a list of every payment received, with dates.
- I can show how I arrived at the balance owing.
- I have the emails, texts and letters about the job and the bill, with dates.
- I know who prepared each record and how to reach them.
- I have written down the key dates, so I can ask about the limitation period for my situation.
Where we fit
Roger Dinner is a licensed paralegal, and our Small Claims Court services include unpaid invoices, contract disputes and debt recovery. If a customer owes you money and you want someone to look over your records before deciding on a claim, book a free consultation. A short summary is enough to start, and we reply within 24 to 48 hours. Please leave out confidential details until we have confirmed we are retained.
Frequently asked questions
What documents do I need to sue for an unpaid invoice in Ontario Small Claims Court?
Gather what shows the agreement (contract, accepted quote or written acceptance), the invoices, proof the work was done or goods delivered, a record of payments received and the communications about the bill. If your claim is based on a document, such as the contract or invoice, a copy must be attached to the claim, or the claim must say why it is unavailable (r. 7.01(2), para. 2).
When do my documents go to the other side?
Two steps are required, and a third is optional. Documents your claim is based on are attached when the claim is filed (r. 7.01(2), para. 2). At least 14 days before the settlement conference, each party serves and files any document it will rely on at trial that is not already attached to its claim or defence (r. 13.03(2)). Then, if you serve a document at least 30 days before the trial date on all parties served with the notice of trial, it is received in evidence unless the trial judge orders otherwise (r. 18.02(1)).
Can I use invoices and receipts as evidence at a Small Claims Court trial?
Rule 18.02(2) names "a financial record, a receipt, a bill" among the documents that can be received in evidence if served at least 30 days before the trial date on all parties served with the notice of trial (r. 18.02(1)). The party serving them must include the name, telephone number and address for service of the author (r. 18.02(3)). The trial judge can order otherwise.
Does a partial payment from my customer matter?
It can. Record the date and amount of every payment, because it affects the balance you claim. For a claim for a liquidated sum, the Limitations Act, 2002 treats a part payment like a signed written acknowledgment, which can change the date the limitation period runs from (s. 13(1), (10) and (11)). Ask a licensed professional about the exact date for your situation.
This article is general information about Ontario's Small Claims Court, current as of its publication date. It is not legal advice and does not create a paralegal-client relationship. Court rules change; speak with a licensed professional about your own situation.