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Collection Letter

LegalLetters and Notices
Who is writing to whom

Phone, email or address the customer can reply to.

The unpaid amount
This letter
Letter stage
Collection letter —
Stage
—
Days overdue
—
Pay-by date
—
Words in letter
—

A collection letter is a written request from a creditor for an overdue payment. Enter who owes what, the original due date and the letter date: an invoice of $1,250 due January 15 and chased on March 1 is 45 days overdue, and allowing 14 days sets a pay-by date of March 15, 2026.

About this tool

Small businesses, freelancers and landlords chasing an unpaid invoice usually send two or three letters, each firmer than the last. This generator writes the letter for the stage you pick: a polite first reminder, a second notice that asks for payment or a written plan, or a final notice that names the next step, such as a collection agency or a small claims case. It counts how many days the amount is overdue and sets a pay-by date from the number of days you allow, and it flags a final notice sent before 30 days have passed. The text is a starting draft written for an original creditor. Third-party debt collectors in the United States must also meet the Fair Debt Collection Practices Act notice rules, which this template does not cover.

How to use it

  1. Name both parties

    Enter your business or personal name, a phone number or email the customer can reply to, and the customer's name.

  2. Describe the unpaid amount

    Type the amount owed, the invoice or account number if there is one, and the date the payment was originally due.

  3. Pick the stage

    Choose First reminder, Second notice or Final notice; the wording and subject line change with the stage.

  4. Set the deadline

    Use the minus and plus buttons to set how many days the customer has to pay; the pay-by date and the letter update as you go.

Examples

First reminder for a $1,250 invoice

Your name or business
Northfield Joinery Ltd
Your contact details
accounts@northfield.example
Customer name
Dana Whitlock
Amount owed
1250
Invoice or account number
INV-2041
Original due date
2026-01-15
Date of this letter
2026-03-01
Letter stage
First reminder
Days allowed to pay
14

Result Collection letter: Northfield Joinery Ltd
accounts@northfield.example

March 1, 2026

To: Dana Whitlock

Re: Payment reminder (reference INV-2041)

Dear Dana Whitlock,

Our records show that $1,250.00 (reference INV-2041), due on January 15, 2026, has not yet been paid. It is now 45 days past due. If you have already sent payment, please accept our thanks and disregard this letter.

Please pay the balance by March 15, 2026. If there is a problem with the invoice or you need to arrange payment in parts, contact us before that date.

Sincerely,

Northfield Joinery Ltd
Stage: Payment reminder
Days overdue: 45
Pay-by date: March 15, 2026
Words in letter: 93

  1. Days overdue = March 1, 2026 − January 15, 2026 = 45 days
  2. Pay-by date = March 1, 2026 + 14 days = March 15, 2026
  3. Tone: friendly (Payment reminder)

The invoice fell due on January 15 and the letter goes out on March 1, so it is 45 days overdue; 14 days to pay gives a March 15 deadline.

Second notice after 39 days

Your name or business
Ravi Desai Design
Your contact details
ravi@desai.example
Customer name
Harbor Cafe LLC
Amount owed
480.5
Original due date
2028-02-10
Date of this letter
2028-03-20
Letter stage
Second notice
Days allowed to pay
10

Result Collection letter: Ravi Desai Design
ravi@desai.example

March 20, 2028

To: Harbor Cafe LLC

Re: Second notice: overdue account

Dear Harbor Cafe LLC,

We wrote to you earlier about $480.50, due on February 10, 2028. The account is now 39 days overdue and we have not received payment or a reply.

Please pay the full balance by March 30, 2028, or contact us by that date to agree a payment plan. If you dispute any part of the amount, tell us in writing which part and why.

Sincerely,

Ravi Desai Design
Stage: Second notice: overdue account
Days overdue: 39
Pay-by date: March 30, 2028
Words in letter: 91

  1. Days overdue = March 20, 2028 − February 10, 2028 = 39 days
  2. Pay-by date = March 20, 2028 + 10 days = March 30, 2028
  3. Tone: firm (Second notice: overdue account)

2028 has a February 29, which the count includes; the firmer wording asks for payment or a plan within 10 days.

Final notice sent only 20 days late

Your name or business
Lumen Print Co
Customer name
J. Okafor
Amount owed
300
Original due date
2026-05-01
Date of this letter
2026-05-21
Letter stage
Final notice
Days allowed to pay
7

Result Collection letter: Lumen Print Co

May 21, 2026

To: J. Okafor

Re: Final notice before further action

Dear J. Okafor,

Despite earlier reminders, $300.00, due on May 1, 2026, remains unpaid after 20 days.

This is our final request. Unless the full balance is paid or a written payment plan is agreed by May 28, 2026, we intend to pass the account to a collection agency or start a small claims case to recover the amount without further notice.

Sincerely,

Lumen Print Co
Stage: Final notice before further action
Days overdue: 20
Pay-by date: May 28, 2026
Words in letter: 82

  1. Days overdue = May 21, 2026 − May 1, 2026 = 20 days
  2. Pay-by date = May 21, 2026 + 7 days = May 28, 2026
  3. Tone: final (Final notice before further action)

The tool flags a final notice sent before 30 days, and the missing contact line, so both can be fixed before posting.

How it is calculated

days overdue = letter date − due date; pay-by date = letter date + days allowed

letter date
The date printed at the top of the letter
due date
The date the original invoice or agreement required payment
days allowed
Calendar days the customer has to pay, from 1 to 60

Both counts use calendar days, including weekends and public holidays, and leap days are counted where they fall. The letter text is assembled from three fixed templates. Each one states the amount, the reference and the original due date so the customer can match it to their records, gives a single deadline, and asks the customer to raise any dispute in writing. Only the final notice names a consequence, because threatening action you do not intend to take undermines the letter and, for collectors covered by federal law, can be an unfair practice.

Sources

When not to use it

  • Do not use it as a third-party collection agency; that work needs a validation notice this template lacks.
  • Do not use it for a consumer debt you bought from another creditor.
  • Skip it when the customer has already filed a formal dispute or bankruptcy; get legal advice instead.
  • It is not a court claim form or a statutory demand.

Common mistakes

  • Sending a final notice first, before any reminder, which leaves no room to escalate.
  • Threatening a lawsuit or agency referral you have no plan to carry out.
  • Leaving out the invoice number, so the customer cannot match the letter to a bill.
  • Adding fees the original contract never allowed.

Frequently asked questions

How many days late should a first reminder go out?

Many businesses send a first reminder between 7 and 30 days after the due date. A short delay catches simple oversights while the work is still fresh in the customer's mind. The tool accepts any letter date after the due date and shows the exact count.

Does the Fair Debt Collection Practices Act apply to my letter?

The Act, at 15 U.S.C. § 1692a, mainly covers third parties who collect consumer debts owed to someone else, such as agencies and debt buyers. A business collecting its own invoices in its own name is generally outside that definition, although some state laws reach original creditors too.

What is the difference between the three stages?

The first reminder assumes an oversight and thanks the customer if payment is already on its way. The second notice notes that an earlier letter went unanswered and invites a payment plan. The final notice says what you intend to do if the deadline passes, such as passing the account to an agency or filing a small claims case.

Why does the tool warn about an early final notice?

A final notice sent less than 30 days after the due date skips the usual reminders and can damage a customer relationship over what may be a simple delay. Small claims judges also tend to look for evidence of reasonable earlier requests. The warning does not block the letter.

Are weekends counted in the days overdue?

Yes. Both the days-overdue figure and the pay-by date use calendar days, so weekends and public holidays count. If the pay-by date falls on a Sunday, you may want to add a day so the customer can pay by bank transfer.

Should the letter be sent by post or email?

Either works for a reminder. For a final notice, many creditors use a delivery method that leaves a record, such as certified mail or an email with a read receipt, so they can later show the customer received it.

Can I add late fees to the amount?

Only if your original contract or invoice terms allowed them. Enter the amount actually owed under those terms; adding a charge the customer never agreed to can turn a clear claim into a dispute.

Cite this tool

Using this tool in an assignment, article or report? Copy a citation, or a link for your website.

APA

Tools Directory Editorial Team. (2026, October 27). Collection Letter. Tools Directory. Retrieved October 27, 2026, from https://tools.milunir.com/legal/letters-and-notices/collection-letter/

MLA

Tools Directory Editorial Team. “Collection Letter.” Tools Directory, 27 Oct. 2026, https://tools.milunir.com/legal/letters-and-notices/collection-letter/. Accessed 27 Oct. 2026.

Chicago

Tools Directory Editorial Team. “Collection Letter.” Tools Directory. Last modified October 27, 2026. Accessed October 27, 2026. https://tools.milunir.com/legal/letters-and-notices/collection-letter/.

Link<a href="https://tools.milunir.com/legal/letters-and-notices/collection-letter/">Collection Letter – Tools Directory</a>