Sole Trader Chasing Unpaid Invoice: Do You Need a Statutory Demand or Letter of Demand?

You’ve done the work. You’ve sent the invoice. The client has gone silent. As a sole trader, unpaid invoices are eating into your cash flow — and you’re wondering whether a statutory demand or a letter of demand is the right tool to recover what you’re owed.

The short answer: if your debtor is an individual or another sole trader, a statutory demand won’t work. If they’re a registered company, it might. This article maps out which debt recovery tool applies to your situation and the fastest path to getting paid.

What is a statutory demand?

A statutory demand is a formal notice issued under the Corporations Act. It gives a registered company 21 days to pay a debt of $4,000 or more — or face potential wind-up proceedings.

It only works against companies:

• Proprietary limited companies (Pty Ltd)
• Public companies (Ltd)
• Registered entities with an ACN or ABN ending in “Pty Ltd”

If your debtor is trading as a sole trader, partnership, or individual, a statutory demand has no legal effect. You can’t wind up a person.

What is a letter of demand?

A letter of demand is a formal written notice that:

• States the amount owed
• Cites the legal basis for the debt (contract, Australian Consumer Law, unjust enrichment)
• Sets a clear deadline for payment (typically 7-14 days)
• Warns of further action if the debt remains unpaid

Unlike a statutory demand, a letter of demand works against anyone — individuals, sole traders, partnerships, and companies. It’s the universal first step in debt recovery.

When sole traders can use a statutory demand

You can only issue a statutory demand if:

1. The debtor is a registered company — check the ABN lookup or ASIC register. If the ABN shows “Individual/Sole Trader” or “Partnership,” a statutory demand won’t apply.
2. The debt is $4,000 or more — this is the minimum threshold.
3. The debt is not genuinely disputed — if the company has a legitimate reason to dispute the amount, the statutory demand can be set aside.
4. The debt is liquidated — a specific, ascertained sum, not estimated damages.

If all four conditions are met, a statutory demand is a nuclear option. Most companies will pay within the 21-day window rather than risk insolvency proceedings.

When sole traders should use a letter of demand

In most cases, a letter of demand is the correct tool. Use it when:

• The debtor is an individual, sole trader, or partnership
• The debt is under $4,000
• You want a fast, low-cost first step before tribunal or court
• The debtor is a company, but you want to avoid the formality of a statutory demand

A properly drafted letter of demand:

• Demonstrates you are serious about recovering the debt
• Creates a written record of the demand (critical if you later file in tribunal)
• Often prompts immediate payment without further action
• Costs a fraction of what a lawyer’s letter would cost

The debt recovery path for sole traders

Here’s the proven sequence for chasing an unpaid invoice in Australia:

Step 1: Send a polite reminder

Before formal action, send a short email or text confirming the invoice is overdue and asking for payment. Many disputes are resolved at this stage because the client forgot or had an admin issue.

Step 2: Issue a letter of demand

If the reminder is ignored, issue a formal letter of demand. This should be on letterhead, cite the contract or applicable law, and set a clear deadline — typically 7 to 14 days.

Send the letter via email and registered post to create a paper trail.

Step 3: File in the relevant tribunal or court

If the debtor still doesn’t pay, your next step depends on the amount owed:

• Under $10,000 (most states): File in the local small claims tribunal (VCAT, NCAT, QCAT, etc.). No lawyer required, low filing fee, fast hearing.
• $10,000 to $25,000: File in the relevant state tribunal or Magistrates Court.
• Over $25,000: Magistrates Court or District Court, depending on your state.

Step 4: Enforce the judgment

If you win at tribunal or court, you receive a judgment. If the debtor still won’t pay, you can enforce through:

• Garnishee orders (intercept their bank account or wages)
• Warrant for seizure and sale of goods
• Examination summons (force them to disclose assets)

Statutory demand vs letter of demand: Key differences

| Factor | Statutory Demand | Letter of Demand | |—|—|—| | Who it works against | Companies only | Anyone | | Minimum debt | $4,000 | No minimum | | Prescribed form | Yes (Form 509H) | No | | Deadline | 21 days | Flexible (7-14 days typical) | | Consequence if ignored | Wind-up proceedings | Tribunal or court | | Cost | $197+ (affidavit, service) | $79 (via ClaimDone) |

Common mistakes sole traders make

Mistake 1: Issuing a statutory demand against an individual

This has no legal effect. The recipient can ignore it entirely. If you proceed to wind-up proceedings, the application will be dismissed and you’ll waste time and money.

Mistake 2: Waiting too long to act

Debts get harder to recover the longer you wait. Memories fade, evidence is lost, and debtors move or dissolve their businesses. Act within 30 days of the invoice due date.

Mistake 3: Sending vague or emotional demands

A demand that says “Pay me or else” with no legal basis, no amount breakdown, and no deadline is easy to ignore. A formal letter citing the contract or applicable law carries weight.

Mistake 4: Not keeping evidence

If you end up in tribunal, you’ll need to prove the debt. Keep:

• The signed contract or quote
• Invoices and payment terms
• Proof of delivery or work completed
• All correspondence (emails, texts, calls)

What if the debtor disputes the invoice?

If the debtor genuinely disputes the amount or the quality of work, a letter of demand may not resolve the matter immediately. In that case:

• Respond in writing to their dispute
• Provide evidence of the work completed or goods delivered
• Offer to mediate or negotiate a reduced settlement if appropriate
• If no resolution is reached, file in tribunal

A letter of demand is still valuable because it creates a written record of your claim and their response — both of which will be relevant if you proceed to tribunal.

Final checklist: Before you send a demand

Before issuing a letter of demand or statutory demand, confirm:

• [ ] The debtor’s correct legal name and address (check ABN lookup or ASIC register)
• [ ] The exact amount owed, including any interest or late fees if specified in your contract
• [ ] The legal basis for the debt (contract, invoice, Australian Consumer Law)
• [ ] You have evidence to prove the debt (invoice, signed agreement, proof of delivery)
• [ ] You’ve checked whether the debtor is an individual or a company
• [ ] You’ve set a realistic deadline (7-14 days for a letter of demand, 21 days for a statutory demand)

How ClaimDone helps sole traders recover unpaid invoices

ClaimDone’s Letter of Demand service is built for sole traders chasing unpaid invoices. Here’s how it works:

1. Complete a 5-minute intake form — tell us about the debt, upload your invoice and any contract or correspondence.
2. Our Proprietary AI Engine drafts the letter — citing the applicable Australian law (contract, Australian Consumer Law, or unjust enrichment), formatted professionally, and tailored to your situation.
3. We deliver it automatically — sent via email and registered post to the debtor, with tracking confirmation sent to you.

Flat fee of $79. No subscription. Done in 60 minutes.

If the debtor is a registered company owing $4,000 or more, we also offer a Statutory Demand service — preparing Form 509H and the supporting affidavit template for $197.

Get your unpaid invoice sorted today

If you’re a sole trader chasing an unpaid invoice, don’t waste time on tools that don’t apply to your situation. A letter of demand is the fastest, cheapest, and most effective first step — and in most cases, it’s all you’ll need.

ClaimDone generates your letter of demand in 60 minutes, citing the applicable Australian law, and delivers it automatically to the debtor. Flat fee of $79. No lawyers required.

Start your letter of demand now →

Frequently Asked Questions

Can a sole trader issue a statutory demand in Australia?

A sole trader can issue a statutory demand, but only if the debtor is a registered company (Pty Ltd or Ltd) and the debt is $4,000 or more. You cannot issue a statutory demand against an individual, sole trader, or partnership — it has no legal effect.

What is the best way for a sole trader to chase an unpaid invoice?

Start with a polite reminder, then issue a formal letter of demand citing the contract or Australian Consumer Law. If that’s ignored, file in your state’s small claims tribunal. Most unpaid invoices are resolved at the letter of demand stage.

How much does it cost to send a letter of demand in Australia?

A lawyer may charge $300-$800 for a letter of demand. ClaimDone generates and delivers a letter of demand for a flat fee of $79, with no subscription or hidden costs.

What happens if a sole trader ignores my letter of demand?

If the debtor ignores your letter of demand, your next step is to file a claim in the relevant tribunal or court. The letter of demand becomes evidence that you attempted to resolve the matter before taking legal action.

Can I include interest on an unpaid invoice in Australia?

Yes, if your contract or invoice terms specify a late payment interest rate. If not, you may be able to claim interest under relevant state legislation or as part of a tribunal claim. Always check your contract first.