How to Write Effective Invoice Reminders for Your Customers

Friday, May 8th 2026
a woman sits at a computer typing

   Quick Answer: How do you write an effective invoice reminder? 

An effective invoice reminder is clear, polite, and action-oriented. It should include the invoice number, amount due, due date, and a direct payment link. Send reminders before, on, and after the due date using a friendly but firm tone to encourage prompt payment while maintaining strong customer relationships. 

Why Invoice Reminders Matter 

Late payments are one of the biggest challenges for finance teams: 

A well-crafted invoice reminder is one of the simplest and most effective ways to improve cash flow without adding headcount. 

How to Write an Effective Invoice Reminder (Step-by-Step) 

Follow these steps to create reminders that get results: 

  1. Start with a polite, professional tone 
    Keep the message friendly and respectful to preserve the relationship.  
  2. Clearly reference the invoice 
    Include invoice number, amount due, and due date.  
  3. Provide a direct payment option 
    Add a payment link or instructions to make paying easy.  
  4. Restate payment terms 
    Clarify deadlines and any applicable late fees.  
  5. Keep it short and easy to scan 
    Avoid long paragraphs—get to the point quickly.  
  6. Attach the original invoice 
    Make it easy for the customer to access and review.  

What Should an Invoice Reminder Include? 

Every invoice reminder email should contain: 

  • Invoice number  
  • Amount due  
  • Due date  
  • Payment link or instructions  
  • Summary of payment terms  
  • Contact information for questions  
  • A copy of the original invoice  

The easier you make it to pay, the more likely your customer will act quickly. 

When Should You Send Invoice Reminders? 

Timing is critical. Use this simple cadence: 

  • 1 week before the due date 
    A friendly reminder helps prevent late payments.  
  • On the due date 
    Reinforces urgency and prevents oversight.  
  • 1 week after the due date 
    Politely follow up and note that payment is now overdue.  

If payment is still not received, the account should move into a formal collections or dunning process. 

Invoice Reminder Email Templates 

📩 1. Friendly Reminder (Before Due Date) 

Subject: Reminder: Invoice #12345 Due Soon 

Hi [Name], 
Just a quick reminder that invoice #12345 for $[amount] is due on [date]. 

You can make a payment here: [link] 

Please let me know if you have any questions. 
Thanks so much, 
[Your Name] 

📩 2. Due Date Reminder 

Subject: Invoice #12345 Due Today 

Hi [Name], 
This is a reminder that invoice #12345 for $[amount] is due today. 

You can submit payment here: [link] 

Let me know if you need anything to process this. 
Best regards, 
[Your Name] 

📩 3. Past Due Reminder 

Subject: Past Due: Invoice #12345 

Hi [Name], 
I wanted to follow up regarding invoice #12345, which was due on [date] and is now past due. 

You can make a payment here: [link] 

Please let me know if there are any issues or questions. We’re happy to help. 
Thank you, 
[Your Name] 

How Can You Simplify the Invoice Reminder Process? 

Manual follow-ups can be time-consuming and inconsistent. Automation tools can help by: 

  • Sending reminders automatically based on due dates  
  • Personalising messages using customer data  
  • Optimising timing based on past behavior  
  • Managing the full collections workflow from invoice to payment  

This reduces administrative burden while improving consistency and results. 

FAQ: Invoice Reminders 

How many invoice reminders should I send? 

Most businesses send three reminders: one before the due date, one on the due date, and one after. Additional follow-ups may be needed for overdue accounts. 

What tone should I use in an invoice reminder? 

Use a polite, professional, and friendly tone. Even past due notices should remain respectful while clearly communicating urgency. 

Should I include a payment link? 

Yes. Including a direct payment link significantly increases the likelihood of fast payment. 

Can invoice reminders be automated? 

Yes. Many accounts receivable platforms allow you to automate reminders, personalise messaging, and track responses. 

What if a customer still doesn’t pay? 

If reminders are unsuccessful, the account should move into a formal collections or dunning process with more structured escalation. 

Improve Cash Flow with Better Communication 

Consistent, well-timed communication is key to reducing late payments and improving customer relationships. By combining clear messaging with the right cadence—and leveraging automation where possible—you can significantly improve your collections performance. 

Want proven workflows to reduce late payments and improve cash flow? 
Download our Accounts Receivable Playbook to get started.