Free Collection Letter Template
Create a professional letter in minutes
Follow up on an unpaid business invoice with the amount due and a clear payment request. Give your customer an easy way to pay or discuss the balance.
Print your letter or download it as a PDF.
14-day free trial. No credit card required.
Collection Letter Example
This friendly reminder asks about an overdue invoice while leaving room for a payment already on its way. The wording below covers the first reminder, firmer follow-ups, and the next step before a formal demand.
What Is a Collection Letter?
A collection letter asks a customer to pay an overdue balance. It identifies the invoice, explains what is still owed, and gives the customer a clear way to pay or respond.
Use these letters to follow up on your own business-to-business invoices. A missed email, billing question, or unmatched payment can hold up an invoice. Give the customer enough detail to find it and explain what is holding up payment.
Collection rules: Federal and state requirements depend on the debt, who is collecting it, and where the parties are located. These examples are not consumer-debt or third-party collection notices. Check the rules that apply before adding fees or taking formal collection action. The CFPB explains federal coverage and state-law differences.
Choose the Stage That Matches the Conversation
You do not need to send every letter. Choose the stage that fits the reminders you have already sent. Stop when the customer pays or raises a question you need to resolve.
- Friendly reminder: The agreed due date has passed, and you want to bring the invoice to the customer's attention.
- Second notice: Your first reminder has not produced payment or a useful reply.
- Final notice: Earlier reminders remain unanswered, and this will be your last routine reminder before you review the account.
- Before a formal demand: You have decided to prepare a formal demand for review. Gather the account records and explain that next step accurately.
If payment is not yet due, use a routine invoice email. If the customer has questioned a charge, answer that question first. A fresh notice with the same unexplained balance rarely moves the conversation forward.
1. Friendly Payment Reminder Letter
Copy this wording and replace each bracketed detail. Use the amount still unpaid after checking recent payments and credits, and include the invoice copy when you send the letter.
Copy-Ready Wording
[Your business name]
[Street address]
[City, State ZIP]
[Email address] | [Phone number]
[Month Day, Year]
Reference: Invoice [invoice number]
[Recipient name or Accounts Payable Team]
[Customer business name]
[Street address]
[City, State ZIP]
Subject: Payment reminder — Invoice [invoice number]
Dear [recipient name or Accounts Payable Team]:
Our records show that [amount and currency] remains unpaid on invoice [invoice number] for [business goods or services]. The invoice was issued on [invoice date] and was due on [original due date].
Please pay by [response date] using [payment instructions], with invoice [invoice number] as the payment reference. If you need more time, please reply by that date with the date you expect to pay. A copy of the invoice is included for your reference.
If you have already paid, please send the payment date and reference so we can check our records. If you have a question about the invoice, contact me at [email address or phone number].
Thank you for your attention. We appreciate your business.
Sincerely,
[Signature]
[Your name]
[Job title]
[Your business name]
2. Second Collection Notice
Mention the date of your first reminder and ask when payment will arrive. Leave room for an invoice question or a payment already sent.
Copy-Ready Wording
[Your business name]
[Street address]
[City, State ZIP]
[Email address] | [Phone number]
[Month Day, Year]
Reference: Invoice [invoice number]
[Recipient name or Accounts Payable Team]
[Customer business name]
[Street address]
[City, State ZIP]
Subject: Second payment reminder — Invoice [invoice number]
Dear [recipient name or Accounts Payable Team]:
I am following up on our reminder dated [first reminder date]. Our records still show an unpaid balance of [amount and currency] on invoice [invoice number] for [business goods or services], originally due on [original due date].
Please pay using [payment instructions], with invoice [invoice number] as the payment reference, or reply by [response date] with the date you expect to pay. Another copy of the invoice is included.
If payment has been sent, please share the payment date and reference. If an invoice question is holding things up, contact me at [email address or phone number] so we can review it together.
Thank you. I look forward to your reply.
Sincerely,
[Signature]
[Your name]
[Job title]
[Your business name]
3. Final Collection Notice
Use “final” only if you intend this to be your last routine reminder. Choose a reasonable response date and keep the next step factual.
Copy-Ready Wording
[Your business name]
[Street address]
[City, State ZIP]
[Email address] | [Phone number]
[Month Day, Year]
Reference: Invoice [invoice number]
[Recipient name or Accounts Payable Team]
[Customer business name]
[Street address]
[City, State ZIP]
Subject: Final payment reminder — Invoice [invoice number]
Dear [recipient name or Accounts Payable Team]:
This is our final routine reminder about invoice [invoice number] for [business goods or services], originally due on [original due date]. Following our reminders dated [earlier reminder dates], our records show that [amount and currency] remains unpaid.
Please pay [amount and currency] by [response date] using [payment instructions], with invoice [invoice number] as the payment reference. If you need to discuss the balance, contact me by that date. A copy of the invoice is included.
If you have already paid or believe the amount is incorrect, please send the relevant details to [email address or phone number] by that date so we can check them.
If we receive neither payment nor a reply, we will review the account and decide on an appropriate next step. We would prefer to resolve the balance directly with you.
Sincerely,
[Signature]
[Your name]
[Job title]
[Your business name]
4. Wording Before a Formal Demand
Use this letter only when you have decided to prepare a formal demand for review. Gather the account records first, and describe that actual next step in the letter.
Copy-Ready Wording
[Your business name]
[Street address]
[City, State ZIP]
[Email address] | [Phone number]
[Month Day, Year]
Reference: Invoice [invoice number]
[Recipient name or Accounts Payable Team]
[Customer business name]
[Street address]
[City, State ZIP]
Subject: Invoice [invoice number] — Account review
Dear [recipient name or Accounts Payable Team]:
We are writing about the unpaid balance of [amount and currency] on invoice [invoice number] for [business goods or services]. The invoice was originally due on [original due date]. We sent reminders on [reminder dates], including a final routine reminder on [final reminder date].
As of [balance checked date], [amount and currency] remains unpaid. Please pay using [payment instructions], with invoice [invoice number] as the payment reference, or send any information you would like us to review by [response date].
A copy of the invoice is included. If you have paid, please send the payment date and reference. If you disagree with the balance, explain the item in question and send the supporting details to [email address].
We are gathering the invoice, payment records, and previous reminders for review of a formal demand. We would prefer to resolve the balance directly with you. You can reach [contact name] at [phone number] or [email address].
Sincerely,
[Signature]
[Your name]
[Job title]
[Your business name]
When Routine Reminders Are Not Enough
Keep the agreement, invoice, payment records, and earlier messages together. Note any question the customer has raised and how you answered it. Those records give an adviser the facts needed to review a formal demand or another next step.
Use the demand letter template for that separate task. Have the wording and any proposed action reviewed before sending it. Do not add a threat simply to make an ordinary reminder sound firmer.
How to Write a Collection Letter
Open the business letter generator and add your wording. Keep the invoice beside you so the amount, reference, and due date agree with your records.
- Identify Your Business: Add your business name, address, and a contact who can answer payment questions.
- Address the Customer: Use the correct business name and the person or team responsible for the invoice.
- Date and Reference the Letter: Use a written-out letter date and the invoice number. Keep the original invoice due date in the message.
- Explain the Balance: Name the work or goods, the amount still unpaid, and the original due date.
- Request Payment or a Reply: Give payment instructions and a response date. Invite the customer to raise any payment or invoice question.
- Close and Sign: Add a courteous closing, signature space, and your name. Include the invoice copy mentioned in the letter.
Before You Send Your Collection Letter
Check the balance once more just before sending. A payment received this morning may change what the letter needs to say.
- The invoice number, customer business, and original due date match your records.
- The requested amount reflects payments and credits already received.
- The payment instructions and reply contact are correct.
- The requested response date is clear and realistic.
- The wording mentions only reminders you sent and next steps you are considering.
- The invoice copy mentioned in the letter is included.
After You Send Your Collection Letter
For letters emailed from Docelf, check the document history to see when the letter is delivered and opened. If it has not been delivered, check the email address before sending it again.
After your requested response date, check for payment and a reply before following up. If neither has arrived, contact the person responsible for payment and ask whether anything is holding up the invoice. An opened letter does not confirm payment or agreement with the balance.
A useful follow-up moves the conversation forward. If the customer proposes a payment date or questions an item, record the reply and address it in your next message.
Ready to Follow Up on the Invoice?
Put your payment request into Docelf's letter layout. Add the invoice details and your own wording, then review the letter before emailing it or downloading a PDF.
Adjust the Wording to the Account
The invoice history should guide the message. These fictional examples show how to explain a specific hold-up without making the letter longer than it needs to be.
A Partial Payment Has Arrived
Summit Roofing invoiced a business customer $1,800 and received $600. The reminder should acknowledge that payment and request the remaining $1,200.
“Thank you for the $600 payment received on September 24, 2026. The remaining balance on invoice SR-1042 is $1,200. Please pay the balance using the invoice payment instructions or let us know the expected payment date by October 7, 2026.”
Several Invoices Are Still Unpaid
Identify each invoice and original due date rather than sending one unexplained total. This example is separate from the partial-payment example above.
“Our records show two unpaid invoices: SR-1048 for $450, due September 10, 2026, and SR-1051 for $750, due September 17, 2026. The total unpaid balance is $1,200. Please confirm which invoices your payment will cover.”
The Invoice Needs to Reach Accounts Payable
A customer may need the invoice resent with a purchase order or job reference. Ask for what is missing rather than repeating a notice to someone who cannot process it.
“I have included another copy of invoice SR-1060 for the warehouse roof inspection. Could you confirm that it has reached the right team and let me know if you need a purchase order reference or other billing detail?”
A Promised Payment Has Not Arrived
Refer to the date the customer actually gave you. Leave room for a transfer still being processed or a reference you have not matched.
“You mentioned that payment for invoice SR-1064 would be sent on September 25, 2026. We have not yet matched it to the invoice. Could you send the payment reference, or let me know the revised payment date?”
Keep the Letter Easy to Read
Docelf uses a slightly modified block format. The date and reference sit on the right; the recipient and body stay on the left. Keep the subject short, such as “Payment reminder — Invoice SR-1042.”
For a US business letter, use US Letter paper, readable type, a written-out date, and a blank line between paragraphs. Address a named person when you can, or use “Dear Accounts Payable Team:”. Close with “Sincerely,” and leave space for your signature above your typed name.
A reference helps the customer find the invoice. Add an enclosure line only when it helps identify something you are actually sending. See the business letter format guide for spacing and the order of the parts.
Common Collection Letter Mistakes
- Repeating the original total: Check payments and credits so you ask only for the balance still unpaid.
- Using a vague request: “Please deal with this” gives the reader less direction than a payment instruction and requested reply date.
- Mixing up dates: Keep the original invoice due date separate from the date you are asking the customer to respond.
- Ignoring the reply: Resolve an invoice question instead of sending the next notice as though nothing has changed.
- Making threats: Do not invent fees, claim a lawyer is involved, or threaten action you cannot or do not intend to take.
Print, Download, or Use Word or Google Docs
To create a finished letter online, add your details in the business letter generator, then print it or download the PDF. Review the amount and wording before sending.
Prefer Word or Google Docs? Choose a letter template below, then use the copy icon above your chosen letter to add the wording. Replace the placeholders and check the balance before sending.
Collection Letter FAQs
-
When should I send a collection letter?
Check that the agreed invoice due date has passed and that your records include recent payments and credits. A friendly reminder is a useful first step when the balance is still unpaid. If the customer has raised a question, address it before repeating the same request.
-
Do I need to send all four letters?
No. Choose the stage that matches your actual correspondence. If the customer pays, explains an error, or agrees to a new payment arrangement, respond to that instead of continuing the sequence. The examples are not an automatic mailing schedule.
-
How long should I give the customer to respond?
Choose a realistic response date based on your earlier messages and the payment terms. Make clear that this is your requested reply date; it does not replace the invoice’s original due date. No single deadline fits every collection letter.
-
Can I add a late fee or interest?
Include a fee or interest charge only after checking that your agreement and applicable law allow it. Show it separately from the unpaid invoice balance. These examples do not add fees or interest.
-
What if the customer says the invoice is wrong or already paid?
Ask for the invoice item in question or the payment date and reference. Compare the reply with your invoice, agreement, and payment records. Correct an error before sending another notice, and explain any balance that remains.
-
Is a collection letter the same as a demand letter?
A collection letter can be a routine request to pay an overdue invoice or explain a problem with the balance. A formal demand may set out a proposed next step if the matter remains unresolved. Have that wording and next step reviewed before sending.
-
Can I print or download the collection letter?
Yes. Write your letter in Docelf, then print it or download it as a PDF. You can also copy the wording on this page into Word or Google Docs and format it there.
-
Can I email the collection letter from Docelf?
Yes. You can email your letter from Docelf and check its document history for delivered and opened information. Follow up on the customer’s actual response and your payment records; an opened letter does not show that the invoice has been paid.
Write a Clear Payment Request
Give the customer what they need to resolve the unpaid invoice.
- Identify the invoice and verified balance
- Ask for payment or a reply by a clear date
- Email, print, or download your letter as a PDF
