15+ templates

Overdue invoice email templates for UK freelancers

Copy, paste, personalise, send. 15+ email templates for every stage of chasing a late payment, from a gentle “just checking in” to a formal final demand.

How to use these templates

These templates are starting points, not scripts. If you have a good relationship with the client, adjust the tone to match how you normally communicate. If you have never met them, the templates work well as-is.

The templates use placeholders. Replace [Name], [REF], [AMOUNT], [DATE], and [X] with your actual details before sending. Every template assumes a business-to-business relationship, which means you have full statutory rights under UK law.

The templates are organised by how overdue the invoice is. Start at the top and work down. Do not skip stages. Courts look favourably on freelancers who can show they tried to resolve things reasonably before escalating.

Every reminder you send should include:

  • The invoice reference number
  • The exact amount owed
  • The original due date
  • A clear call to action (what you need them to do)
  • The invoice itself as a PDF attachment

A quick note on tone

The earlier templates are casual and friendly. The later ones are formal and reference the law. This is deliberate. You want to give the client every opportunity to pay before things get serious. Jumping straight to legal language on day one damages relationships unnecessarily.

Before due date

The best reminder is the one you send before the invoice is even late. A quick heads-up a few days before the due date is friendly, professional, and surprisingly effective at preventing late payments in the first place.

Think of it like a dentist sending you a text before your appointment. It is not nagging, it is helpful. Most clients appreciate the heads-up, especially if they need to get invoices approved internally before payment can go out.

1. Upcoming invoice reminder

3-5 days before due dateTone: Friendly

Subject: Invoice [REF]: due on [DATE]

Hi [Name],

Quick heads-up that invoice [REF] for £[AMOUNT] is due on [DATE]. Just flagging in advance in case it helps with scheduling.

The invoice is attached.

Thanks,
[Your name]

2. Due today reminder

Due dateTone: Light, casual

Subject: Invoice [REF] due today

Hi [Name],

Just a quick note that invoice [REF] for £[AMOUNT] is due today.

If it is already on its way, please ignore this. Just keeping my records tidy.

Thanks,
[Your name]

Gentle reminders: 1–7 days overdue

The invoice is technically late, but there is no need to panic. Most late payments are down to disorganisation, not bad intentions. Keep things warm and give them the benefit of the doubt.

At this stage, you are not chasing. You are reminding. Keep the language light, assume the best, and make it easy for them to pay. Nine times out of ten, a gentle nudge is all it takes.

3. The casual nudge

1-3 days overdueTone: Warm, friendly

Subject: Quick reminder: Invoice [REF]

Hi [Name],

Hope you are well. Just a quick reminder that invoice [REF] for £[AMOUNT] was due on [DATE].

I know things get busy, so just flagging in case it slipped through.

Happy to resend the invoice if that helps.

Thanks,
[Your name]

4. The “did you get it?” check

3-5 days overdueTone: Helpful, assumes good faith

Subject: Checking in: Invoice [REF]

Hi [Name],

Just checking that invoice [REF] for £[AMOUNT] (due [DATE]) made it to the right person. Sometimes these things end up in the wrong inbox.

I have attached it again just in case.

Could you let me know when I can expect payment?

Thanks,
[Your name]

5. The accounts department redirect

5-7 days overdueTone: Practical, solution-focused

Subject: Payment query: Invoice [REF]

Hi [Name],

I am just following up on invoice [REF] for £[AMOUNT], which was due on [DATE].

If this needs to go to your accounts team, could you let me know who to contact? Happy to send it directly to them.

Thanks,
[Your name]

Firm follow-ups: 7–14 days overdue

You have been patient. You have sent polite reminders. Now it is time to be direct. Drop the “just checking in” language and make it clear you need this resolved.

These templates ask for a specific action (“arrange payment within 7 days”) rather than leaving things open-ended. They also use “Regards” instead of “Thanks”, a small change that signals a more serious tone.

6. The direct follow-up

7-10 days overdueTone: Direct, professional

Subject: Overdue invoice [REF]: payment needed

Hi [Name],

I am following up on invoice [REF] for £[AMOUNT], which was due on [DATE] and is now [X] days overdue.

Could you let me know when I can expect payment? If there is a problem with the invoice or the work, I am happy to discuss it, but I do need this resolved promptly.

I have attached the original invoice for reference.

Thanks,
[Your name]

7. The deadline setter

10-14 days overdueTone: Firm, sets a deadline

Subject: Payment overdue: Invoice [REF]

Hi [Name],

This is a follow-up regarding invoice [REF] for £[AMOUNT], now [X] days past the due date of [DATE].

I have not received payment or a response to my previous reminder.

Please arrange payment within the next 7 days, or let me know if there is an issue I should be aware of.

Regards,
[Your name]

8. The work-on-hold warning

14 days overdue (if you have ongoing work)Tone: Firm but collaborative

Subject: Invoice [REF] overdue: impact on current work

Hi [Name],

Invoice [REF] for £[AMOUNT] has been overdue since [DATE].

I am reaching out because this is affecting our working relationship. I am unable to continue with [current project/new work] until the outstanding balance is settled.

Could you arrange payment this week? I would like to get things back on track.

Regards,
[Your name]

When to use this: Only if you have ongoing or upcoming work with this client. It is one of the most effective templates because it makes the consequence of non-payment immediate and tangible. Check your contract first, as some contracts require written notice before pausing work.

Final demands: 14–30 days overdue

This is where the tone shifts. You are no longer asking nicely. You are informing them of consequences. Mention your statutory rights. Set firm deadlines. Make it clear what happens next if they do not pay.

Under the Late Payment of Commercial Debts (Interest) Act 1998, you can charge 8% plus the Bank of England base rate in annual interest on any overdue commercial invoice. You are also entitled to fixed compensation: £40 on debts up to £999.99, £70 on debts from £1,000 to £9,999.99, and £100 on debts of £10,000 or more. You do not need a contract clause. It is your legal right. Use our late payment calculator to work out the exact amount.

9. The statutory rights mention

14-21 days overdueTone: Serious, references law

Subject: Final reminder: Invoice [REF] now [X] days overdue

Dear [Name],

This is my final reminder regarding invoice [REF] for £[AMOUNT], which was due on [DATE].

Under the Late Payment of Commercial Debts (Interest) Act 1998, I am entitled to charge statutory interest on overdue commercial invoices, as well as fixed compensation for recovery costs.

I would prefer to resolve this without taking further action. Please arrange payment within 7 days.

Regards,
[Your name]

10. The interest calculation

21-28 days overdueTone: Factual, gives them a way out

Subject: Overdue invoice [REF]: statutory interest accruing

Dear [Name],

Invoice [REF] for £[AMOUNT] is now [X] days overdue.

I want to make you aware that under the Late Payment of Commercial Debts Act 1998, I am entitled to charge statutory interest at 8% plus the Bank of England base rate per year from the date payment was due.

I have not yet applied interest to this invoice. If payment is received within 7 days, I am happy to waive it. After that date, I will add statutory interest and fixed compensation to the amount due.

Regards,
[Your name]

Why this works: Offering to waive interest gives the client a clear incentive to pay now rather than later. It is both firm and reasonable, exactly the approach that courts look favourably on if things escalate further.

11. The final warning before legal action

28-30 days overdueTone: Formal, clear consequences

Subject: Final notice before further action: Invoice [REF]

Dear [Name],

Despite multiple reminders, invoice [REF] for £[AMOUNT] (due [DATE]) remains unpaid.

This is my final communication before I take formal steps to recover the debt. Unless I receive payment within 7 days, I will issue a formal Letter Before Action, which is the first step in the county court claims process.

I strongly encourage you to settle this matter now to avoid additional costs.

Regards,
[Your name]

Special situations

Not every overdue invoice follows a neat timeline. Sometimes you need a different approach. Below are templates for the awkward situations that do not fit the standard escalation.

These are not sequential. Use whichever one fits your situation. They can be combined with the templates above or used on their own when you need a different angle.

14. The payment plan offer

When you suspect cash flow problemsTone: Understanding, pragmatic

Subject: Invoice [REF]: payment arrangement

Hi [Name],

I understand that cash flow can be difficult. If paying invoice [REF] for £[AMOUNT] in one go is not possible right now, I am open to discussing a payment plan.

Could you propose a schedule that works for you? I would rather find a solution that works for both of us than escalate this further.

Thanks,
[Your name]

15. The contact details request

When emails to your main contact are ignoredTone: Practical, non-confrontational

Subject: Invoice [REF]: who handles payments?

Hi [Name],

I have been trying to follow up on invoice [REF] for £[AMOUNT] (due [DATE]) but have not had a response.

Could you let me know who in your organisation handles accounts payable? I would like to direct my queries to the right person.

Thanks,
[Your name]

16. The “we need to talk” email

When written reminders are not workingTone: Calm, direct

Subject: Outstanding payment: can we arrange a call?

Hi [Name],

I have sent several reminders about invoice [REF] for £[AMOUNT] without response.

I think it would be helpful to discuss this by phone. Could you let me know a convenient time for a 10-minute call this week?

I would like to resolve this directly.

Thanks,
[Your name]

Tips for sending overdue invoice emails

Always attach the invoice

Remove the “I cannot find it” excuse. Attach the PDF to every single reminder you send. It saves a round trip of emails and shows you are organised.

Be specific

Include the invoice reference number, the exact amount, and the original due date in every email. Vague reminders are easy to ignore.

Set deadlines

“Within 7 days” beats “at your earliest convenience” every time. People respond to deadlines. Open-ended requests get pushed to the bottom of the pile.

Keep records

Save every email you send and receive. Note every phone call (date, who you spoke to, what was agreed). You may need this evidence later if things escalate.

Escalate on schedule

Do not send 15 polite reminders. Move through the stages: gentle, firm, final, legal. Each step tells the client you are serious and organised.

Do not apologise for asking

You did the work. Payment is expected, not a favour. Phrases like “sorry to bother you” undermine your position. You are running a business, not asking for charity.

Frequently asked questions

Use them as a starting point. If you know the client, personalise the tone. But keep the key elements: invoice reference, amount, due date, and a clear call to action.

This guide is for informational purposes only and does not constitute legal advice. Templates should be adapted to your specific circumstances.

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