A Clear Guide to Customer Collection Letter

One of the most critical and challenging tasks for any business is collecting payments from customers. An effective customer collection letter can help you collect payment while maintaining goodwill with your customer.

But it must strike a delicate balance between maintaining a good relationship with your customer and protecting your bottom line. When customers don’t pay on time, it can put a real strain on your cash flow. That’s why it’s so important to have an effective strategy for Collections. And one essential part of that strategy is writing a collection letter.

This guide will go through the key steps of writing an impactful collection letter and a list of effective templates.

What Is a Customer Collection Letter?

A customer collection letter is a formal notice that a company sends to a customer who has failed to pay their outstanding balance. This type of letter is sometimes referred to as a “past due” or “dunning” letter.

This type of letter typically includes details about the amount owed and information about how the payment can be made. Collection letters become necessary when customers have neglected to make payments for extended periods of time.

Tips for Writing Collection Letters

A customer collection letter is typically written to resolve a delinquency on a product or service. To be impactful and successful, a collection letter needs to be clear and concise, strategic, and well-written.

So, follow the tips below to write an effective collection letter.

  • Start by politely reminding the customer of their outstanding balance, and thank them for their business.
  • Be clear and concise in your language, and avoid using overly technical or legal terms.
  • Explain the consequences of non-payment, such as late fees or interest charges, in a calm and matter-of-fact manner.
  • Give customers multiple payment options, such as online banking or mailing a check to make it easier for them to pay what they owe.
  • Thank the customer again for their business, and let them know you appreciate their prompt payment.

List of Collection Letter Templates

A collection letter is a formal request for payment to be made on an outstanding debt. The tone and language of your letter must be polite yet professional to maintain a balance between being assertive and friendly. Below is a list of templates to help you compose a well-crafted collection letter more quickly:

Template 1:

Dear Valued Customer,

We hope this letter finds you well. This letter is to remind you that there is an outstanding payment on invoice number [12345]. We value your business and have always appreciated your prompt payments.

If you have already mailed the check, please disregard this email. Otherwise, we request that you mail the check as soon as possible. I appreciate your attention to this matter.


[Your Name]

Template 2:

Dear [customer name],

We regret to inform you that your payment of $[amount] for invoice number [invoice number] is still outstanding. We kindly request that you settle this amount as soon as possible.

Please find attached a copy of the invoice for your reference. Should you have any questions, please do not hesitate to contact us at [contact information]. Thank you for your attention to this matter.

Best Regards,

[Your Name]

Template 3:

Dear [Customer Name],

This is a second notice that payment on your account is overdue. Our records indicate that the original invoice was due on [date], and to date, we have not received payment. We encourage you to take action to rectify this situation quickly, as non-payment can hurt your credit terms and ratings.

We understand that sometimes it can be challenging to make a full payment all at once. If you need assistance with making payments, please don’t hesitate to contact our office so that we can work out an agreeable payment plan.

Thank you for your attention to this matter, and we look forward to hearing from you soon.


[Your Name]


When it comes to overdue accounts, it’s essential to take swift and decisive action. A customer collection letter is the first step in getting your delinquent account holders back on track.

This document offers the account holder information about their overdue account and the opportunity to make payment before any further action is taken.

Customer collection letters are also meant to demonstrate how professional the business is through its written communication skills. To help you write a well-crafted collection letter, we have compiled a list of valuable tips along with some templates as inspiration.

Abir is a data analyst and researcher. Among her interests are artificial intelligence, machine learning, and natural language processing. As a humanitarian and educator, she actively supports women in tech and promotes diversity.

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