What to Write in a Payment Reminder

The non-negotiable details

A reminder that leaves out a key fact hands the customer a ready-made reason to stall. Every reminder you send should carry the same core information so there is nothing left to query and no gap to hide behind:

• The invoice number and the amount owing, including GST.
• The original due date and how overdue it now is.
• How to pay — a link, BPAY, or your bank details.
• A fresh copy of the invoice attached.

Lead with the answer to the customer's very first question: how much, and how do I pay it? Burying the amount or the payment method under paragraphs of explanation slows everything down. The faster a busy accounts person can see the figure and act on it, the sooner the money actually moves from their account to yours.

Subject line and opening

The subject line alone decides whether your reminder is opened or buried. Be specific — 'Reminder: Invoice 1042 now overdue' beats a vague 'Following up' every time, and including the invoice number makes the email easy to find again later when the customer goes to pay.

Open with a single, clear sentence stating that the invoice is past due and that you would appreciate prompt payment. Skip the long, apologetic preamble that softens the ask into invisibility. A busy person should grasp exactly what you want within the first line, then see immediately how to act on it. Treat the opening as a headline, not a warm-up: the quicker the reader understands the situation and the request, the less room there is for the message to be skimmed and forgotten.

Set a real deadline

'Please pay soon' is an open invitation to keep delaying. Give a specific date instead — 'please arrange payment by Friday 12th' — so there is a clear, unmissable point at which the matter escalates. A concrete deadline quietly converts a vague request into a firm expectation, and expectations get met far more reliably than hopes.

Tie the deadline to a consequence in your later reminders. A final notice can state plainly that the account will be escalated for recovery if payment is not received by the date given, which signals that the deadline is real rather than decorative. Our letter of demand generator handles the firmer, formal end of this scale when a reminder deadline has come and gone without payment.

Match tone to stage

The very same facts can be wrapped in completely different tones, and the right tone depends entirely on how overdue the invoice is. An early reminder is warm and assumes an honest oversight; a later one is brief, formal and explicit about what happens next. Let the wording harden steadily as the days pass, but never let it become abusive, sarcastic or openly threatening — that kind of language can be used against you if the debt is later disputed or pursued.

A small library of templates that escalate in tone makes this easy to manage. The first template is friendly, the middle ones firm, the last one plainly pre-escalation. Pulling the right one off the shelf keeps your wording consistent and proportionate at every stage, instead of swinging between over-soft and over-aggressive depending on your mood that day.