Evidence Needed to Win a Debt Claim in Australian Tribunal

You filed your tribunal application. The hearing date is set. Now what?

Most people lose debt claims not because they are wrong, but because they cannot prove they are right. Australian tribunals operate on evidence, not emotion. If you cannot prove the debt exists, the amount owed, and that you delivered what you promised, you lose.

The Core Documents Every Debt Claim Needs

These documents prove the debt exists and is owed to you.

Invoice or tax invoice The single most important piece of evidence. It must show:

• Your business name and ABN
• The debtor’s name and address
• Date of issue
• Description of goods or services supplied
• Amount due (including GST if applicable)
• Payment terms (e.g., “Net 30 days”)

If you issued multiple invoices, bring them all. If you issued a quote that was accepted, bring that too.

Written contract or service agreement A signed contract proves what you agreed to deliver, what they agreed to pay, when payment was due, and any terms about late payment or disputes.

If the contract was verbal, you need other evidence — text messages, emails, or a signed quote.

Purchase order or signed quote If the debtor signed a quote or issued a purchase order, that proves they requested the work and accepted your price.

Proof of delivery or completion You must prove you actually did the work or delivered the goods:

• Delivery docket signed by the recipient
• Photos of completed work (timestamped if possible)
• Email confirmation from the debtor acknowledging receipt
• Project completion sign-off
• Shipping tracking number showing delivery

Without proof of delivery, tribunals may find the debt unenforceable.

Correspondence That Proves You Tried to Recover the Debt

Tribunals want to see that you made a genuine effort to resolve the dispute before filing.

Demand letters or payment reminders Any letter, email, or SMS where you asked for payment:

• Initial invoice reminder emails
• Follow-up payment requests
• Formal letter of demand

These show the debtor was aware of the debt and had the opportunity to pay or dispute it.

Responses from the debtor If the debtor replied — even to make excuses or promise payment “next week” — bring those messages. They prove the debtor acknowledged the debt and did not dispute the amount or quality of work.

If the debtor never responded, say so in your witness statement. Silence can also be evidence.

Records of phone calls Note the date, time, and what was discussed. Include this in your witness statement as part of your timeline.

Financial Records That Show the Debt Remains Unpaid

Bank statements Highlight the period when payment was due. If the debtor made a partial payment, show that too.

Accounting software records If you use Xero, MYOB, QuickBooks, or similar, print a statement showing:

• All invoices issued
• All payments received (if any)
• Current outstanding balance

Payment plan agreements (if applicable) If you agreed to a payment plan and the debtor defaulted, bring the written agreement and proof of missed payments.

How to Organise Your Evidence

Tribunals move fast. Adjudicators do not have time to dig through unsorted papers.

Create a chronological timeline List every key event in order:

1. Quote issued and accepted
2. Work completed or goods delivered
3. Invoice issued
4. Payment due date passed
5. First reminder sent
6. Second reminder sent
7. Formal demand letter sent
8. Tribunal application filed

Attach the relevant document to each event.

Use a folder with numbered tabs Put each category of evidence behind a numbered tab:

• Tab 1: Contract or quote
• Tab 2: Invoices
• Tab 3: Proof of delivery
• Tab 4: Correspondence
• Tab 5: Bank statements
• Tab 6: Witness statement

Prepare copies for everyone Bring three sets of your evidence bundle:

• One for the adjudicator
• One for the debtor (or their representative)
• One for yourself

Check your state tribunal’s rules about serving evidence on the other party before the hearing.

The Witness Statement: Your Evidence in Your Own Words

A witness statement is your written testimony. It explains what happened, in your own words, supported by the documents you have attached.

Your witness statement should:

• Be written in first person (“I issued the invoice on 15 March 2024”)
• Follow the chronological timeline
• Refer to specific documents (“Attached at Tab 2 is the invoice”)
• Be signed and dated
• Include a declaration that the contents are true

Tribunals give significant weight to witness statements because they are made under penalty of perjury.

Common Evidence Mistakes That Lose Cases

No proof of delivery You say you completed the work. The debtor says you did not. Without proof, the tribunal cannot decide in your favour.

Vague invoices “Services rendered — $5,000” is not enough. The tribunal needs to see exactly what you did and why it cost that amount.

No demand letter If you filed straight to tribunal without asking for payment first, the adjudicator may question whether you gave the debtor a fair chance to pay.

Missing correspondence You deleted the emails. You lost the text messages. Now you cannot prove the debtor acknowledged the debt. Always keep records.

Unorganised evidence You bring a shoebox of receipts and expect the adjudicator to sort it out. They will not.

What Happens If the Debtor Brings Counter-Evidence?

The debtor may claim the work was defective, the goods were not as described, they already paid, or they never agreed to the contract.

If they bring evidence to support these claims, you need to respond. This is why your evidence must be complete and credible. If you can show photos of the completed work meeting the agreed standard, signed acceptance of the work, bank records proving no payment was received, and a signed contract proving agreement, the debtor’s claims fall apart.

How ClaimDone Helps You Prepare Tribunal Evidence

ClaimDone’s Witness Statement service takes the evidence you upload — invoices, contracts, correspondence, delivery records — and structures it into a tribunal-ready witness statement. You get a professionally formatted document that follows Australian tribunal rules, references your evidence correctly, and tells your story clearly.

If you are preparing a tribunal application from scratch, our Tribunal Application service drafts the full application and supporting documents, ready to file in your state tribunal.

Both services are fixed-fee, fast, and designed for Australians who need to prove their case without hiring a lawyer.

Final Checklist Before Your Hearing

• [ ] Invoice or tax invoice showing amount owed
• [ ] Contract, quote, or purchase order proving agreement
• [ ] Proof of delivery or work completion
• [ ] All correspondence with the debtor (emails, letters, SMS)
• [ ] Bank statements showing non-payment
• [ ] Witness statement signed and dated
• [ ] Evidence organised in a numbered folder
• [ ] Three copies of your evidence bundle
• [ ] Hearing notice and tribunal application reference number

If you can tick every box, you are ready. If you cannot, get the missing evidence now — or explain in your witness statement why it does not exist.

Tribunals are designed for ordinary people to resolve disputes without lawyers. But that does not mean you can walk in unprepared. Bring the evidence, organise it properly, and present it clearly. If you need help structuring your witness statement or preparing your tribunal application, ClaimDone delivers tribunal-ready documents based on the evidence you upload — fixed fee, Australia-wide, ready to file.

Frequently Asked Questions

Do I need a lawyer to present evidence in an Australian tribunal?

No. Tribunals are designed for self-representation. You do not need a lawyer, but you do need to organise your evidence properly and present it clearly. A well-prepared witness statement and evidence bundle are often enough to win.

What if I do not have a written contract?

You can still prove the agreement existed using emails, text messages, signed quotes, or purchase orders. If the debtor paid previous invoices for similar work, that also supports your case. A verbal contract is legally binding in Australia — you just need other evidence to prove its terms.

Can I submit evidence after the hearing has started?

It depends on the tribunal and the adjudicator. Most tribunals require you to serve your evidence on the other party before the hearing. If you bring new evidence on the day, the adjudicator may refuse to consider it or adjourn the hearing — which delays your claim and may cost you more.

What happens if the debtor does not show up to the hearing?

You still need to prove your case. The tribunal will not automatically rule in your favour just because the debtor is absent. Bring all your evidence and present it as if the debtor were there. If your evidence is strong, the tribunal will likely make an order in your favour.

How do I prove I sent a letter of demand if I sent it by regular post?

Keep a copy of the letter and a record of when you posted it. If you sent it by registered post or email, you will have tracking or delivery confirmation. If you sent it by regular post, include a statement in your witness statement confirming the date and method of delivery. Tribunals generally accept that a letter posted was received unless the debtor can prove otherwise.