Overdue Invoice Reminder Email: 3 Templates
Copy-and-paste payment reminder emails for overdue invoices: friendly, firm and final notice, plus when to send each one.

Late payments are common, and a polite reminder usually fixes them. Most clients simply forgot or lost the invoice.
Send reminders in steps, starting friendly and getting firmer only if you need to.

When should you send a reminder?
| When | Tone | Goal |
|---|---|---|
| 1 to 3 days after the due date | Friendly | Check it was received |
| About 14 days late | Firm | Ask for a payment date |
| About 30 days late | Final notice | Set a deadline and next step |
Want to try it right away? Free Invoice Generator is free and needs no signup.
What does a friendly reminder look like?
Subject: Invoice INV-2026-014 due on 11 November
Hi Sam, a quick reminder that invoice INV-2026-014 for £1,080 was due on 11 November. I have attached a copy. Could you let me know when I can expect payment? Thanks, Jane
What does a firm reminder look like?
Subject: Overdue: invoice INV-2026-014
Hi Sam, invoice INV-2026-014 for £1,080 is now 14 days overdue. Please arrange payment by 28 November. If there is a problem with the invoice, tell me and I will fix it right away. Thanks, Jane
What does a final notice look like?
Subject: Final notice: invoice INV-2026-014
Hi Sam, this is a final reminder that invoice INV-2026-014 for £1,080 is 30 days overdue. Under our payment terms, late interest applies. Please pay by 5 December to avoid further action. Thanks, Jane

Tips that get you paid
- Attach the invoice again, so the client can pay at once.
- Include the amount, number and due date in the subject.
- Keep a calm tone and write down every contact.
- Mention late fees only if they were in your terms. Work out the amount with the late payment interest calculator.
Prevent the problem next time with clear terms, see invoice payment terms and what to include on an invoice.
FAQ
How do I politely ask for payment?
Be short, give the invoice number, amount and due date, attach the invoice and ask when you can expect payment.
How long should I wait before sending a reminder?
A friendly reminder 1 to 3 days after the due date is normal.
Can I charge interest on an overdue invoice?
Only if your terms or local law allow it. Add the terms to your invoice before the work starts.
Is this legal advice?
No. For disputes or debt recovery, speak to a lawyer or accountant.