Overdue Invoice Email Templates: 6 Payment Reminders That Work

Most overdue invoices are not refusals to pay. They are invoices that were missed, filed in the wrong place, stuck waiting for an approval, or just paid on the client's next payment run. A clear, polite reminder at the right moment solves the majority of them, and keeps the working relationship intact.

Below are six payment reminder emails you can copy and adapt, from a friendly nudge before the due date to a final notice. Replace the bracketed details and always attach the invoice again.

When to send each reminder

Timing	Tone	Goal
3-5 days before due	Friendly	Make sure the invoice has reached the right person
On the due date	Friendly	A gentle nudge
3-7 days overdue	Polite, direct	Confirm receipt and ask for a payment date
14 days overdue	Firm	Find out what is holding it up
30 days overdue	Formal	State consequences such as paused work or interest
45+ days overdue	Final notice	Last chance before formal recovery

1. Friendly reminder before the due date

Subject: Invoice [2026-014] - due [15 October]

Hi [Name],

Just a quick note that invoice [2026-014] for [project] ([£1,690]) is due on [15 October]. I've attached it again in case it's easier to have it to hand.

Let me know if you need anything else from me to process it - a PO number or different billing details.

Thanks,
[Your name]

2. Reminder on the due date

Subject: Invoice [2026-014] due today

Hi [Name],

A friendly reminder that invoice [2026-014] for [£1,690] is due today. Payment details are on the attached invoice - please use [2026-014] as the reference.

If it's already on its way, thank you, and please ignore this email.

Best,
[Your name]

3. First overdue reminder (3-7 days late)

Subject: Overdue: invoice [2026-014]

Hi [Name],

I haven't yet received payment for invoice [2026-014] ([£1,690]), which was due on [15 October]. Could you confirm it has reached the right person and let me know when I can expect payment?

I've attached the invoice again for convenience.

Thanks,
[Your name]

4. Second overdue reminder (around 14 days late)

Subject: Second reminder: invoice [2026-014] is 14 days overdue

Hi [Name],

Following up on invoice [2026-014] for [£1,690], now 14 days past its due date of [15 October]. Is there anything holding it up - a query about the work, or a detail missing from the invoice? I'm happy to help resolve it.

Could you let me know the expected payment date by [date]?

Regards,
[Your name]

5. Formal reminder (30 days late)

Subject: Invoice [2026-014] - 30 days overdue

Dear [Name],

Invoice [2026-014] for [£1,690] is now 30 days overdue. Despite my earlier reminders on [dates], I have not received payment or a date for it.

Please arrange payment by [date]. Until the account is up to date I will need to pause further work. [As set out in our terms, interest may be charged on overdue amounts.]

If there is a problem, please call me on [number] so we can sort it out.

Regards,
[Your name]

6. Final notice

Subject: Final notice: invoice [2026-014]

Dear [Name],

This is a final notice regarding invoice [2026-014] for [£1,690], originally due on [15 October] and now [45] days overdue.

If payment is not received by [date - usually 7 to 14 days away], I will start formal recovery, which may include [statutory interest and compensation / a letter before action / a small claims application].

I would much prefer to settle this directly. Please contact me before [date] if you want to agree a payment plan.

Regards,
[Your name]

Tips for reminders that work

• Always attach the invoice. Do not make the client search for it.
• Put the invoice number and amount in the subject line so it can be found and forwarded.
• Ask a question. "When can I expect payment?" gets a reply more often than a statement does.
• Email the person who pays, and copy your contact if they are different.
• Keep it factual. Stay polite even in the final notice; you may need these emails as evidence.
• Call after the second reminder. A two-minute phone call often resolves what three emails could not.
• Only mention interest or fees you are entitled to charge - see invoice payment terms for the rules in the UK, EU and US.

Prevent late payments in the first place

• Agree payment terms before the work starts.
• Invoice the day the work is finished.
• Print a clear due date and every payment detail on the invoice - or add a payment QR code so the client can pay in seconds.
• Take a deposit on new or large jobs.

The invoice generator's Email button opens a ready-written draft in your own email app, with the total and due date filled in and the PDF attached - useful for reminders too. Once the client pays, you can send a receipt.

Frequently asked questions

How long should I wait before sending a reminder?

A friendly reminder a few days before the due date is fine and often prevents lateness altogether. After the due date, follow up within a week.

How many reminders should I send?

Typically three or four emails over about six weeks, with a phone call after the second, before a final notice.

Can I charge interest on an overdue invoice?

If your contract allows it, or if the law gives you the right - as the UK and EU late payment rules do for business-to-business debts. Check what applies before you mention it.