Most overdue invoices aren’t refusals — they’re oversights. Around two-thirds of late payments clear on the first reminder, so a calm, well-timed sequence does almost all the work. Below are five templates you can copy, paste, and adapt — moving from friendly to firm. Replace the [bracketed] details with your own.
1. The friendly heads-up (3 days before due)
Goal: prevent lateness before it happens
Subject: Invoice [#1043] due [Fri, Jul 3]
Hi [Name],
Quick heads-up that invoice [#1043] for [$2,400] is due on [Jul 3]. You can pay online in a couple of clicks here: [payment link].
Thanks so much — always a pleasure working with you.
[Your name]
2. The due-date nudge (day it’s due)
Goal: make paying effortless, today
Subject: Invoice [#1043] is due today
Hi [Name],
Just a friendly reminder that invoice [#1043] for [$2,400] is due today. Here’s the link to pay by card, bank transfer, or PayPal: [payment link].
Let me know if you need anything from me.
[Your name]
3. The gentle follow-up (7 days overdue)
Goal: assume the best, restate the ask
Subject: Following up on invoice [#1043]
Hi [Name],
I wanted to follow up on invoice [#1043] for [$2,400], which was due on [Jul 3] and is now a week past due. I know things get busy — if it’s already on the way, please ignore this.
If not, here’s the link to take care of it: [payment link]. Happy to resend the invoice or answer any questions.
Thanks,
[Your name]
4. The firm reminder (14 days overdue)
Goal: clear, professional, mentions terms
Subject: Overdue: invoice [#1043] — action needed
Hi [Name],
Invoice [#1043] for [$2,400] is now 14 days overdue. Per our agreed terms, a late fee of [1.5%] may apply to balances unpaid beyond [30 days].
Please arrange payment here at your earliest convenience: [payment link]. If there’s an issue with the invoice, let me know today and I’ll help resolve it.
Regards,
[Your name]
5. The final notice (30+ days overdue)
Goal: last step before escalation
Subject: Final notice — invoice [#1043]
Hi [Name],
Despite previous reminders, invoice [#1043] for [$2,400] remains unpaid [30] days past its due date. This is a final notice before I pursue next steps to recover the balance, which may include late fees and, if necessary, formal collection.
To settle now, use this link: [payment link]. I’d much rather resolve this directly — please reply today.
[Your name]
A few rules that keep these working: keep them short, always include the payment link, never get emotional, and — most importantly — send them on a fixed schedule instead of when frustration finally boils over.
PayInvoix sends this whole sequence automatically — in your tone — and stops the moment the invoice is paid. Automate your reminders free.