Payment Reminder Letter Generator
Reminder tone
From (your details)
To (the client)
Invoice
Use the Late Payment Fee Calculator to work this out, then add it here.
Payment instructions
Add the invoice number, amount due, and due date to complete the reminder.
June 10, 2026
Subject: Reminder: Invoice [invoice number]
Dear Sir or Madam,
I hope you are well. This is a friendly reminder that invoice [invoice number] for [amount], due on [date], is now due.
If payment is already on its way, thank you and please disregard this note. If not, I would be grateful if you could arrange payment at your earliest convenience. If there is any query with the invoice, just let me know and I will be happy to help.
Invoice details:
Invoice number: [invoice number]
Due date: [date]
Amount due: [amount]
Thank you for your prompt attention, and for your business.
Yours sincerely,
[your name]
Your details are saved locally in your browser. Nothing is uploaded to any server.
Chasing an unpaid invoice is uncomfortable, and the wrong tone can either be ignored or damage the relationship. This tool writes the letter for you in three escalating tones: a friendly first nudge, a firmer second reminder, and a final notice before further action. Enter the invoice details once and switch tone with a click. Your own details save automatically so the next chase takes seconds.
How to use this tool
- 1Pick the tone: friendly for a first nudge, firm for a second reminder, or final notice for the last letter before you escalate.
- 2Enter your name and business. These save in your browser for next time.
- 3Add the client contact and company name.
- 4Enter the invoice number, dates, currency, and amount due. The letter shows how many days overdue it is automatically.
- 5Optionally add a late fee (work it out with the Late Payment Fee Calculator) and your payment instructions.
- 6Copy the text into an email, or download or print the letter to send.
Example
From: Sara Lin, Lin Design. To: Mark at Apex Ltd. Invoice INV-104 for 1,800, due 1 June 2026. Tone: Friendly. Output: a warm note saying the invoice is a few days overdue, inviting payment or any query, and signed off with thanks for the business.
Invoice INV-091 for 2,400, due 1 May 2026, now 40 days overdue. Tone: Final notice. Late fee added: 70. Output: a final-notice letter stating total now payable 2,470, asking for payment within 7 days, and noting that late charges and debt recovery may follow if it is not paid.
Common use cases
- Freelancers chasing a client who has missed the payment date on an invoice
- Small businesses sending a structured sequence of reminders before escalating
- Sending a firm second reminder when a friendly nudge has been ignored
- Issuing a documented final notice before adding late fees or using debt recovery
- Keeping a professional, on-record paper trail of every reminder sent
Common mistakes
- Jumping straight to a threatening tone - start friendly, since most late payments are oversights, not refusals.
- Leaving out the invoice number and dates - the client needs to identify exactly which invoice you mean.
- Not stating a clear deadline - 'as soon as possible' is weaker than 'within 7 days of this letter'.
- Adding a late fee that was never in your terms - only charge fees your contract or invoice allowed for.
- Forgetting payment instructions - make it effortless to pay by including bank details or a payment link.
Frequently asked questions
When should I send a payment reminder?
Send a friendly reminder a few days after the due date passes, in case it was simply missed. If there is no response, send a firmer second reminder after a week or two with a clear deadline. Reserve the final notice for when earlier reminders have been ignored and you are ready to add fees or escalate.
What is the difference between the three tones?
Friendly is a warm first nudge that assumes the best. Firm is a clear second reminder that states the invoice is overdue and sets a deadline. Final notice is the last letter before action, stating that late charges or debt recovery may follow if payment is not made by the deadline. The invoice details stay the same; only the wording changes.
Should I add a late fee?
Only if your contract or original invoice stated that late fees apply, or if a statutory right to interest exists. Add the figure in the late fee field and the letter will show the total now payable. Use the Late Payment Fee Calculator to work out a fair amount based on interest and any fixed compensation.
Can I send this as an email instead of a letter?
Yes. Use 'Copy Text' and paste it into your email. The first line of the letter is the subject line you can use, and the body reads naturally as an email. Download or print only if you want a formal letter to post or attach as a PDF.
Is my data uploaded to a server?
No. The tool runs entirely in your browser. Your own name, business, and payment instructions are saved in your browser's local storage so you do not retype them, and nothing about the client or invoice is sent to any server.
What if the client still does not pay after a final notice?
Options vary by location and amount. Common next steps are charging agreed late fees or statutory interest, using a debt recovery agency, sending a formal letter before action, or pursuing a small claims process. This tool helps you build a documented reminder trail, which is useful evidence if you escalate.
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