Letter for outstanding payment: samples and templates

A letter for outstanding payment is a written request for money a customer already owes you, and its job is narrower than most people think. It is not there to persuade, shame or explain. It states the invoice, the amount and the due date, makes paying effortless, and makes clear that another letter is coming if this one is ignored. Everything below is on this page to copy, from the first polite ask through to the formal demand.

Most overdue invoices in Australia are not disputes. Your customer has a stack of supplier bills and limited cash this week, and they pay the suppliers who ask, consistently and in writing. That is the whole reason these letters work.

What makes a strong letter for outstanding payment

A strong letter for outstanding payment is specific, unemotional and easy to act on. Weak ones apologise for existing, bury the amount in a paragraph, and finish with something vague like please look into this. Strong ones read like a bank statement with manners.

• ✓The invoice number, the amount still owed and the original due date, in the first two lines
• ✓How many days past due it now is, stated as a fact rather than an accusation
• ✓Every way to pay: bank details, a payment link, and the reference to use
• ✓One clear next step with a date on it
• ✓An open door: invite a reply if something is genuinely wrong with the invoice
• ✓Your business name and ABN, so it reads as a record rather than a note

One more thing that matters more than wording. Send the sequence on a schedule. Sending the same invoice letter three times teaches a late payer that nothing happens when they ignore you. Escalating on fixed days teaches the opposite, and it does the teaching without the language ever turning nasty.

Overdue payment letter to customer: the first ask

Send this about a week after the due date. Assume good faith, because at seven days it is almost always an oversight or an invoice that never reached the right inbox.

The second overdue payment letter, firmer and still courteous

Around fourteen days. The change here is not the tone, it is the specificity: a named date, and the first mention that this is now a sequence rather than a one off.

Letter to customer for outstanding payment when it is seriously late

At thirty days the letter to customer for outstanding payment changes character. It stops being a reminder and becomes a record, because it may be read later by someone who was not part of the conversation.

Accounts receivable email template for a formal demand

This is the last accounts receivable email template in the sequence and the one to send carefully. It is written to be handed to a lawyer, a tribunal or a collection agency, so every fact in it has to be right. There is a full walkthrough in our guide to writing a Letter of Demand in Australia, including what the ACCC expects you not to say.

Accounts receivable email examples for the awkward situations

The sequence covers the ordinary case. These are the accounts receivable collection email examples for everything else, and each one is two lines rather than a letter.

• ✓They part paid: thank them for the [$amount] received, then state the remaining balance and the invoice it belongs to. Never chase the original total, because chasing money somebody has already sent is the fastest way to lose a good account.
• ✓They promised a date and it passed: quote their own words and the date back to them, ask whether the new date is [date], and say nothing else.
• ✓Wrong contact: ask who handles accounts payable, say you will resend there, and copy the original recipient so the handover is on record.
• ✓They say they never got it: send the invoice again as an attachment, note the original send date, and restart the clock from today rather than arguing about it.
• ✓They have gone quiet entirely: stop emailing and pick up the phone. A collection email for past due invoices that has been ignored three times is not going to work on the fourth.

A short collection message for payment, for SMS or a phone call

A collection message for payment has to survive being read on a phone screen in three seconds, so it carries one fact and one action. Something like: Hi [name], invoice [number] for [$amount] was due [date]. You can pay here: [link]. Reply if there is a problem. That is the whole text. Keep it in business hours, use your business name, and never send one to somebody who has asked you to stop.

How to chase unpaid invoices without doing it by hand

Every letter above works. The reason invoice collections still fail is that nobody sends them on week three, when the week gets busy and the chasing quietly stops. Consistency is the entire game and it is the part humans are worst at, which is exactly why it is the part worth automating. That is what accounts receivable software is for: the sequence runs itself, every past due invoice gets its reminder on the right day, and payments are detected so nobody is chased for money they have already sent.

If you would rather see the same sequence framed as a reminder ladder with timing rules, read our payment reminder templates. If you are new to the terminology, start with what accounts receivable actually is. And if you are worried about the relationship, this is how to chase overdue invoices without losing the customer.