You’ve sent the invoice. Days pass. No payment. No reply. Now what? Knowing how to write a payment reminder email that gets results is one of the most valuable skills for freelancers, small business owners, and anyone managing invoices. The goal is simple: get paid — while staying polite, professional, and calm.

This article will walk you through how to write effective payment reminder emails, from first gentle nudge to final follow-up, with real examples that work.

How to Send a Reminder E-mail (With Examples and Tips)

Why Write a Payment Reminder Email

According to a 2023 study by Xero, more than 60% of invoices are paid late, and nearly 20% require at least one follow-up.

The most common reasons clients don’t pay on time:

• They forgot

• The invoice got lost

• It’s waiting for internal approval

• They’re stalling (less common, but real)

Sending a professional payment reminder email helps speed up the process while protecting your client relationship.

Politely Apologize When You Can’t Make it to the Meeting

When to Send and Write a Payment Reminder Email

Timing is key. Here’s a simple follow-up timeline:

If you’re using payment terms (like “Net 7” or “Net 30”), your reminders should align with that due date — not the invoice date.

What to Include in a Payment Reminder Email

Each reminder email should include:

• The invoice number

• The original due date

• The amount due

• A polite request for payment

• A copy of or link to the invoice

To ensure your attachments are clear and complete, consider using downloadable, free, professional invoice templates from Invoice Simple that include all essential fields and totals.

20 Best Practices for Professional Email Etiquette

Payment Reminder Email Templates

Here are three email examples you can customize and use:

First Reminder Email (1–2 Days After Due Date)

Subject: Friendly Reminder: Invoice #1234 Due

Hi [Client Name],

I hope you’re doing well. I just wanted to gently remind you that invoice #1234 (for $750), originally due on [Due Date], appears to still be unpaid.

I’ve attached the invoice again here for convenience. Please let me know if there are any issues or questions!

Thanks so much,
[Your Name]

✅ Light, respectful tone
✅ Gives client benefit of the doubt

Second Reminder Email (5–7 Days After Due Date)

Subject: Follow-Up: Invoice #1234 Still Outstanding

Hi [Client Name],

Just following up on my previous message about invoice #1234. According to my records, payment is still pending as of today.

Please confirm when the payment is scheduled. If there’s anything delaying it, I’m happy to discuss.

Thanks in advance,
[Your Name]

✅ Polite but firm
✅ Requests a clear update

Final Reminder Email (2–3 Weeks After Due Date)

Subject: Final Reminder: Overdue Invoice #1234

Hi [Client Name],

This is a final reminder that invoice #1234, originally due on [Date], remains unpaid. Please arrange payment by [New Date] to avoid any disruption to our work or additional fees.

If you’ve already sent the payment, thank you — and please disregard this note.

Best regards,
[Your Name]

✅ Calm and professional
✅ Sets a clear deadline
✅ Signals possible next steps

Tips to Make Your Payment Reminder Email More Effective

• Use a clear subject line
  E.g., “Friendly Reminder: Invoice #1002” is better than “Following Up Again…”

• Attach the invoice every time
  Make it easy for the client to pay without having to search.

• Stay professional even if you’re frustrated
  Emotion weakens your position — facts keep it strong.

• Use invoice software with auto-reminders
  Tools like FreshBooks, QuickBooks, or Wave can automate your reminders — and track opens. 

Write a Payment Reminder Email But Still Not Paid

If your final reminder is ignored, it’s time to escalate — but still professionally.

• Pause future work (if applicable)

• Add a late fee (if agreed upon in your contract)

• Mention collections or legal options only if you’re ready to follow through

A firm but calm tone is key at this stage. The more professional you stay, the more seriously you’ll be taken.

Final Thoughts: Write a Payment Reminder Email

You don’t need to feel bad about sending a payment reminder. You’re not being rude — you’re being responsible. The key is staying polite, firm, and consistent. Clients respect clarity.

When done well, a payment reminder email gets results — without damaging the relationship.

Key Takeaways: Writing Payment Reminder Emails That Get Results

✅ Send reminders on a clear, consistent schedule
✅ Always include invoice details and attach the file
✅ Use calm, respectful language
✅ Set expectations clearly in final follow-ups
✅ You can get paid and stay professional at the same time