An invoice reminder works when it is short, specific and sent at the right moment. Below are copy-paste templates for each stage: before the due date, just after, two weeks late and a final notice, plus the timing that keeps most invoices from ever reaching stage three. If you still need to create the invoice itself, start with the free invoice generator.
When to send each reminder
- 2-3 days before the due date:a friendly heads-up. Most "late" invoices are just forgotten ones.
- 1 day after the due date: a polite nudge that assumes good faith and repeats the payment details.
- 7-14 days late: a firm follow-up that asks for a payment date.
- 30 days late: a final notice that states what happens next.
Every message needs the same five ingredients: the invoice number, the amount, the due date, how to pay, and the invoice attached or linked. A reminder that makes the client search for the invoice is a reminder that gets postponed.
Template 1: friendly reminder before the due date
Subject: Invoice [number], due [date]
Hi [name], just a quick heads-up that invoice [number] for [amount] is due on [date]. I have attached it again so it is easy to find. You can pay by [payment methods]. Thanks again for your business!
Template 2: one day after the due date
Subject: Friendly reminder: invoice [number] was due yesterday
Hi [name], a friendly reminder that invoice [number] for [amount] was due on [date]. If you have already sent the payment, please disregard this note. If not, you can pay by [payment methods]; the invoice is attached. Let me know if anything about the invoice needs clarifying.
Template 3: firm follow-up at 7-14 days
Subject: Invoice [number] is now [X] days past due
Hi [name], invoice [number] for [amount] was due on [date] and remains unpaid. Could you confirm when we can expect payment? If there is an issue with the invoice or the work, tell me and we will resolve it, but I do need a concrete payment date this week. The invoice and payment details are attached.
Template 4: final notice at 30 days
Subject: Final notice: invoice [number], [amount] past due since [date]
Hi [name], despite previous reminders, invoice [number] for [amount] has been unpaid since [date]. Please settle it by [deadline, e.g. 5 business days]. If we do not receive payment or hear from you by then, we will pause any scheduled work and evaluate further steps to collect the balance. I would much rather resolve this directly; call me at [phone] if you want to discuss it.
The mistakes that keep invoices unpaid
- Apologizing for charging."Sorry to bother you" teaches clients that paying late has no cost. Polite and direct beats apologetic.
- No specific ask."Just checking in" gets ignored; "please confirm a payment date this week" gets answers.
- Making the client hunt for the invoice. Attach it every time, with the amount and payment method in the message body.
- Threatening in writing what you will not do. Say what happens next only when you mean it, and keep the tone factual.
- Tracking it all from memory. If you do not know which invoices are overdue, reminders go out late or never.
Stop chasing from memory
Templates fix the wording; they do not tell you which invoices need chasing today. Skuadra tracks every invoice with its status, flags the overdue ones on your dashboard and keeps client, amounts and history in one place, so the follow-up takes a minute instead of an archaeology session. See plans and pricing, or start from the free invoice generator and upgrade when the volume grows.