Overdue invoice email: 4 templates from polite to final

An overdue invoice email is a written follow-up sent after a payment due date passes. The best ones are short, specific and make paying easy.

Subject lines that get opened

• Invoice [number] is now overdue
• Quick reminder: invoice [number] for [amount]
• Second notice: invoice [number], [x] days overdue
• Final notice: invoice [number]

1. Polite first email (1–3 days overdue)

Hi [Name], a quick note that invoice [number] for [amount] was due on [date]. It may have slipped through, so here is the payment link: [link]. Thanks, [Your name].

2. Follow-up (7–10 days overdue)

Hi [Name], invoice [number] for [amount] is now [x] days overdue. Could you confirm when payment will be made? If anything is wrong with the invoice, let me know and I will sort it out. Payment link: [link].

3. Firm reminder (21–30 days overdue)

Hi [Name], we still have not received payment for invoice [number] ([amount], due [date]) despite reminders on [dates]. Please arrange payment by [date] or reply to discuss a payment plan.

4. Final notice (30+ days overdue)

Hi [Name], this is our final notice for invoice [number] for [amount], now [x] days overdue. If payment is not received by [date], we will consider further steps to recover the balance. Please contact us before then if there is an issue.

Tips

• Attach the invoice or link to it every time.
• Keep the tone factual and never threaten actions you will not take.
• Send on a fixed schedule rather than when you remember.

AI Money Recovery drafts and schedules this sequence from your invoice data, requires your approval before anything is sent, logs every message and charges a performance fee only when money is recovered.

Frequently asked questions

When should I send an overdue invoice email?

One to three days after the due date, then on a fixed schedule.

How many overdue reminders should I send?

Three or four emails over about 30 days is typical before a formal letter.

Should I call as well as email?

A short call after the second email often resolves issues faster.

What if the client disputes the invoice?

Pause chasing the disputed part, gather the facts and resolve it in writing.