Unpaid invoices

Invoice debt recovery

An overdue invoice is a legal debt. Here is what you can do about it.

When an invoice becomes a recoverable debt

An invoice is a demand for payment. Once the payment terms in the invoice — or in the underlying credit agreement — have expired without payment, the amount is legally overdue and becomes a recoverable debt. If your invoice specifies 14-day or 30-day payment terms and the due date has passed, you have a legal right to recover the amount owed.

An unpaid invoice does not need to be disputed to be recoverable — most overdue invoices are not disputed, they are simply unpaid. The debtor may be experiencing cash-flow pressure, may have let the account slip down the priority list, or may be deliberately avoiding payment. In all of these cases, the remedy is the same: formal demand followed by escalating recovery action.

What rights you have

As the creditor behind an unpaid invoice, you have the right to: send a formal letter of demand requiring payment by a specified date; add contractual interest if your payment terms or credit agreement provide for it; engage a collection agency to pursue the account on your behalf; commence proceedings in the appropriate court or tribunal to obtain a judgment for the amount owed; and — once judgment is obtained — enforce it against the debtor's assets, bank accounts, or income.

You do not need a signed contract in every case. A purchase order, email confirmation, proof of delivery, or an invoice that was received and acknowledged without dispute can all be evidence that a debt exists. The stronger your documentation, the easier recovery becomes.

The recovery process for unpaid invoices

Most invoice debt recovery follows a clear sequence. First, a formal demand — a letter setting out the amount, the due date, and a deadline for payment. This alone resolves many accounts; the debtor simply needed the matter to be formalised. If the demand is ignored, the account is escalated: further contact by phone and letter, negotiation of a payment arrangement where appropriate, and — if the debtor remains unresponsive — referral to legal escalation. For company debtors, a statutory demand under the Corporations Act is a powerful tool once other steps have failed.

Acting quickly matters

The older a debt, the harder it is to collect. Debtors move, companies change directors, assets are disposed of, and limitation periods begin to run. In most Australian states the limitation period for recovering a contract debt is six years — but waiting anywhere near that long dramatically reduces your practical prospects of recovery. Act within 90 days of the debt falling due for the best outcome.

Merion handles unpaid invoice recovery on a commission-only basis. Request a free debt appraisal to discuss your overdue invoices.

Frequently asked questions

Invoice recovery — common questions

When does an unpaid invoice become a debt?

Once the payment terms in the invoice or credit agreement have expired without payment. If your 30-day invoice is overdue, the amount is legally a recoverable debt.

What rights do I have over an unpaid invoice?

You can demand payment, add contractual interest, engage a collection agency, and commence court or tribunal proceedings to obtain a judgment. A judgment can be enforced against the debtor's assets.

How long do I have to recover an unpaid invoice?

In most Australian states the limitation period is six years from when the debt fell due. Do not wait — the older the debt, the harder recovery becomes.

Do I need a signed contract to recover an invoice?

Not always. A purchase order, email confirmation, proof of delivery, or an invoice received without dispute can all evidence the debt. The stronger your documentation, the easier recovery becomes.

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Unpaid invoices are recoverable debts. Let's act on them.

Commission-only recovery. No fee unless we collect.