Late Payment Demand Letter (US) by OLL
The Late Payment Demand Letter is designed to help US-based freelancers and independent contractors follow up on overdue invoices in a clear and professional way. It requests payment, references the outstanding balance, sets expectations for next steps, and is created by OLL's team of legal experts.
Late Payment Demand Letter (US)
Instructions: Use this formal letter when a client has failed to pay an invoice by the due date. A demand letter should identify the overdue invoice, specify the amount due, set a final payment deadline, outline any late fees or interest, and state potential consequences of continued non‑payment. Maintain a professional, courteous tone and attach a copy of the original invoice as supporting evidence.
[your business letterhead or logo]
Date: [month day, year]
Via Certified Mail and Email
[debtor’s name or company name]
[debtor’s address]
Subject: Demand for Payment – Overdue Invoice [invoice number]
Dear [mr./ms./mx. last name],
I hope you are well. I am writing regarding Invoice No. [invoice number] issued on [invoice date], for [description of goods/services provided], in the amount of $[original amount]. Payment was due on [original due date], but as of today, the invoice remains unpaid. Under our agreement and the invoice terms, payment is now overdue.
Outstanding Balance and Late Fee
As of the date of this letter, the outstanding balance is $[current amount due], which includes the original invoice amount and any accrued late fees or interest as permitted by the contract. Please review the attached copy of the invoice for reference and calculation details.
Payment Instructions and New Deadline
Please remit payment in full by [new payment deadline – e.g., 10 business days from the letter date]. Payments may be made by [preferred payment method(s)]. If you have any questions about the amount due or need to arrange an alternative payment plan, contact me at [your phone number or email] as soon as possible.
Consequences of Non‑Payment
Should payment not be received by the new deadline, I will have no choice but to pursue additional remedies, which may include assessing further late fees, referring the matter to a collections agency, or initiating legal action to recover the debt. I would prefer to resolve this matter amicably and avoid escalation.
Thank you for your prompt attention to this matter. I appreciate your business and am confident we can resolve this situation quickly.
Sincerely,
[your name]
[your title / business name]
[your address]
[your phone number]
[your email address]
Enclosure: Copy of Invoice No. [invoice number]
Notes and Legal Considerations
Professional tone: Always maintain a respectful tone and avoid threatening language; politeness can improve payment conversion.
Include all key details: Identify the invoice number and date, outstanding balance, original due date, and new payment deadline. Provide your own and the debtor’s contact information and describe the services provided.
Document everything: Send the letter via a method that provides proof of receipt, such as certified mail or courier, and keep copies for your records.
Attach supporting documents: Attach the original invoice and any relevant contracts to support your demand.
Consult legal counsel: This template is a general guide; for substantial debts or potential disputes, consult an attorney to ensure compliance with state laws and contractual provisions.
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This version is drafted for US law generally. Contract, employment and consumer rules vary by state — for example on non-competes and at-will employment. Tell GitLaw which state applies and it adjusts the draft.
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