Chasing an Overdue Invoice — Escalation Sequence

Research on Australian B2B debtor behaviour consistently shows the same pattern: most late payments resolve with the first reminder (usually an oversight), some require a second reminder (usually a cash-flow issue or a process delay), and a small number require external intervention. The key is moving through the stages quickly — every week of delay reduces recovery probability.

Before you start, gather: the original invoice, the account statement, a record of all previous contact (dates, method, who responded), and a copy of any contract or terms of trade.

Step 1: Day 1–3 overdue — Friendly nudge

Send this on the first business day after the due date. Keep it short and professional. Most overdue invoices at this stage are genuine oversights — a wrong-address email, a missed payment run, an authoriser on leave.

Tone: Friendly and professional. "I wanted to flag…" not "You have failed to pay…"
Content: Invoice number, amount, due date, a note that it may have been overlooked. Attach the invoice and account statement as PDFs. Include your full payment details.
Send method: Email to the accounts payable contact. CC the project or engagement contact if the account contact is not responsive.

Use the friendly nudge template from our payment reminder library.

Step 2: Day 7–10 overdue — Firm reminder

If there has been no payment and no response within a week, send a second reminder — firmer in tone, with a clear deadline.

Tone: Professional but firm. "Despite our previous reminder dated [date]…" This establishes that you have already followed up once.
Content: Reference the previous reminder. State the amount, due date and that the invoice is now [X] days overdue. Offer to arrange a payment plan if the client is having cash-flow difficulties. Set a 7-day deadline. If your terms include late-payment interest, note that it is accruing.
Payment plan: Offering a structured payment arrangement at this stage often resolves the debt where a single lump-sum demand does not. Get any arrangement in writing — even an email confirming "I'll pay $X on [date] and $X on [date]" is sufficient.

Use the firm reminder template from our payment reminder library.

Step 3: Day 14 — Phone call

If there is still no payment or response, pick up the phone. A phone call achieves more than additional emails because:

It is harder to ignore
You can identify the real reason for non-payment (dispute, cash-flow, process issue, evasion)
You can obtain a commitment and record it

Who to call

Call the accounts payable contact first. If you cannot reach them, call the director or principal who engaged you. Do not leave the matter with the project contact — they typically have no authority over payment.

What to say

"Hi [name], this is [your name] from [your business]. I'm calling about Invoice [number] for $[amount], which was due on [date] and is now [X] days overdue. I've sent two reminders. I wanted to check whether there's anything on your end preventing payment."

Responses and how to handle them

"We haven't received it": Resend immediately during the call. Confirm the correct email address. Follow up the next business day to confirm receipt. If this happens twice, something else is going on — escalate.
"It's in the approval process": Ask who the approver is and when the next payment run is. Note the response. If the next payment run passes without payment, escalate immediately.
"We're having cash-flow issues": This is a real problem. Offer a payment plan — get it in writing. If they cannot commit to a date, that is a red flag. Escalate to a debt specialist sooner rather than later.
"We dispute the invoice": Ask them to put the dispute in writing, specifying what is disputed and why. If a genuine dispute exists, negotiate a resolution. If the dispute is a delaying tactic, document it carefully and escalate.
No answer / call not returned: Two unanswered calls with no response are a significant warning sign. Escalate to a final written notice.

Step 4: Day 21 — Final written notice

The final notice is the last internal step before external escalation. It must be unambiguous.

Send by email and, for larger debts, by registered post
Subject line: "FINAL NOTICE — Invoice [number] — [amount] — Payment required within 7 days"
State clearly: "This is your final opportunity to resolve this matter directly"
List the specific consequences if payment is not received: debt recovery referral, interest charges, credit reporting, legal proceedings
Give a specific date (7 calendar days) — not "within 7 days"
Attach the invoice and account statement

Use the final notice template from our payment reminder library.

Step 5: Day 28+ — Escalate externally

If the final notice has passed without payment, the internal process is exhausted. Do not send further reminders — they signal that you will not act on your stated consequences.

The most effective next step for commercial debts is referral to a professional debt recovery specialist. Merion operates on a commission-only basis — no recovery, no fee. Refer the debt to Merion.

Before referring, compile:

Copies of all invoices
The account statement
The signed contract or accepted quote
All reminders sent (with sent timestamps)
Notes from any phone calls (date, time, who you spoke to, what was said)
Any written responses from the debtor

Use the Merion ROI calculator to estimate the value of recovery for your specific debt before referring.

Concurrent actions to consider

Stop-supply / credit hold — do not supply further goods or services on credit while an overdue balance is outstanding.
Credit reporting — commercial debts can be reported to credit bureaus (Creditor Watch, illion) after appropriate notice. This affects the debtor's ability to obtain trade credit from other suppliers.
Recover IP or goods — if your terms include a retention of title clause (goods) or IP ownership on non-payment (creative), exercise those rights promptly.
Statutory demand — for company debtors with debts over $4,000, a statutory demand under the Corporations Act can be a powerful tool. Seek legal advice before issuing one.

Frequently asked questions

What can I do if a client ignores all my reminders?

If a client has ignored three or more reminders including a final notice, the most effective next step is referral to a professional debt recovery specialist. External contact from a specialist produces payment in cases where internal reminders have failed — because the debtor now understands that the matter is being taken seriously and that further inaction has real consequences.

Can I go to court to recover a debt?

Yes. In Australia, small claims can be filed in the Small Claims division of QCAT (QLD), NCAT (NSW), VCAT (VIC) or the ACT Civil and Administrative Tribunal (ACT). For larger amounts, the Magistrates Court (up to $150,000) or District Court applies. Courts are public record and the cost of proceedings is often awarded against the losing party.

How long do I have to recover an overdue invoice?

In most states, the limitation period for contract debts is 6 years from when the debt became due (or when the debtor last acknowledged it in writing). After 6 years, the debt may be statute-barred. Do not leave debts uncollected for years hoping they will self-cure.

Can I report a non-paying client to a credit bureau?

Yes, for commercial debts. Reporting a commercial debtor to a credit reporting body (such as Creditor Watch or illion) affects their credit file and their ability to obtain credit from other suppliers. This step is typically taken after the final notice is ignored. Ensure your terms of trade give you notice rights to report.

Should I keep supplying a client who hasn't paid?

Generally no. Continuing to supply a client with an overdue balance increases your exposure. Place the account on stop-supply or credit hold until the overdue amount is cleared or a payment arrangement is agreed.

Related tools and guides

Payment Reminder Templates — ready-to-copy email and letter templates
Statement Generator — account statements to attach to reminders
Adding Late Fees in Australia
Quote to Invoice to Statement Workflow
How to Get Paid Faster
Merion Free Tools — ROI calculator, late payment cost calculator
Refer a debt to Merion — commission-only recovery