What to Do When a Customer Won't Pay Your Invoice

Unpaid invoices are one of the most common and frustrating challenges facing Australian businesses and sole traders. Whether your client is disputing the amount, ignoring your follow-ups, or simply stringing you along, there are clear, practical steps you can take under Australian law to pursue what you're owed.

Why Won't My Customer Pay My Invoice?

Understanding the reason behind non-payment can help you choose the right approach. Common reasons a customer won't pay an invoice include:

• Genuine financial hardship — the customer is struggling to pay and avoiding the conversation
• Invoice disputes — they're contesting the amount, the work performed, or the terms
• Administrative delays — the invoice is lost in a slow payment approval process
• Bad faith — the customer has no intention of paying and is hoping you'll give up
• Insolvency — the customer's business may be in financial difficulty or already in administration

Identifying the likely cause early helps you decide whether a polite payment reminder, a formal letter of demand, or escalation through a debt recovery provider is the right move.

How Long Should I Wait Before Taking Action?

Most standard Australian business invoices have payment terms of 14, 30, or 60 days. Once that due date passes, you're within your rights to follow up immediately. Industry practice generally suggests:

• Send a payment reminder on or just after the due date
• Follow up by phone within 3–5 business days if there's no response
• Issue a formal letter of demand if the debt remains unpaid after 7–14 days of follow-up

Waiting too long can work against you. Evidence becomes harder to gather, customers become harder to locate, and in some cases, limitation periods under state law may begin to affect your legal options. In most Australian states and territories, the general limitation period for pursuing a debt is six years from the date the debt became due.

What Is a Letter of Demand and Do I Need One?

A letter of demand is a formal written notice sent to a customer who has not paid, stating the amount owed, the basis of the debt, and a deadline for payment — typically 7 to 14 days. It also outlines the consequences of continued non-payment, such as referral to a debt collection agency or legal action.

A well-drafted letter of demand signals that you're serious and often prompts payment without the need for further escalation. It also creates an important paper trail if the matter proceeds to a tribunal or court. While you can write one yourself, many businesses choose to have it sent by a solicitor or debt recovery provider to increase its impact.

What Should a Letter of Demand Include?

• Your full name or business name and contact details
• The customer's full name or business name
• A clear description of the goods or services provided
• The invoice number, date issued, and amount outstanding
• Your payment terms and the date the invoice became overdue
• A firm deadline for payment
• The action you intend to take if payment is not received

What Legal Options Are Available in Australia?

If a letter of demand doesn't resolve the matter, several formal legal pathways may be available depending on the amount owed and the state or territory involved.

Small Claims Tribunals and Courts

For smaller debts, state-based tribunals offer a relatively low-cost, accessible process:

• VCAT (Victoria) — Civil Claims List handles disputes generally up to $100,000
• NCAT (New South Wales) — Consumer and Commercial Division handles claims up to $30,000 (and more in some circumstances)
• QCAT (Queensland) — handles minor civil disputes up to $25,000
• SAT (South Australia), WASAT, ACAT (ACT), NTCAT — similar functions in other jurisdictions

For debts above these thresholds, the Magistrates' Court in each state handles civil claims up to certain limits, and the District or County Court may be relevant for larger amounts.

Statutory Demands

If your customer is a company and the debt exceeds $4,000 (as of the current threshold under the Corporations Act 2001), you may be able to serve a statutory demand. If the company fails to pay or dispute the demand within 21 days, it may be presumed insolvent — which can open pathways to winding-up proceedings. This is a serious legal step and should be taken with professional advice.

Engaging a Debt Recovery Provider

A professional debt recovery provider can manage the recovery process on your behalf — from issuing formal notices to negotiating payment arrangements and, where appropriate, initiating legal proceedings. Many providers work on a commission or no-recovery-no-fee basis, meaning there may be little upfront cost to you.

What If the Customer Disputes the Invoice?

A genuine dispute doesn't mean you've lost your right to recover the debt — but it does mean you need to address the dispute carefully. Start by reviewing your original agreement, any written quotes or contracts, and any correspondence about the work or goods supplied.

If the dispute relates to the quality of work, try to resolve it directly first. Document all communications. If the dispute cannot be resolved, tribunals such as VCAT, NCAT, or QCAT can hear both the customer's complaint and your claim for payment. Australian Consumer Law, administered by the ACCC, may also be relevant if consumer guarantees are in play.

Having a written contract or detailed scope of work in place from the outset makes it significantly easier to demonstrate that you fulfilled your obligations.

How Can Collect My Money Help?

Collect My Money is a free assessment and referral service for Australian businesses and individuals dealing with unpaid invoices. We help you understand your recovery options, then connect you with experienced debt recovery providers suited to your specific situation — whether that's a sole trader chasing a $500 invoice or a business pursuing a large commercial debt.

Our service is free and carries no obligation. You're not locked into anything by requesting an assessment. We simply help you understand where you stand and who can help.

How Can I Prevent Invoice Non-Payment in the Future?

While recovering the current debt is the immediate priority, putting protective measures in place can reduce the risk of this happening again:

• Use written contracts for every job, clearly outlining payment terms, late payment consequences, and dispute resolution processes
• Invoice promptly — the sooner you invoice, the sooner the clock starts
• Require deposits for new clients or large projects
• Run credit checks on new commercial customers before extending credit
• Include clear payment terms on every invoice, including your bank details, due date, and any late fees you intend to apply
• Follow up early — a friendly reminder before the due date is often enough to prompt timely payment

Building these habits into your business processes won't eliminate the risk of non-payment entirely, but it can significantly reduce its frequency and improve your position if recovery action becomes necessary.