[Your Name] [Your Address] [City, State, ZIP] [Email Address] [Phone Number] [Date] [Recipient’s Name] [Recipient’s Address] [City, State, ZIP] Re: Demand for Payment — [Invoice/Contract Number] Dear [Recipient’s Name], I hope this letter finds you well. I am writing to you on behalf of [Your Company Name], located in [Your Company’s City, State]. Our company has been conducting business with you in good faith, providing products/services as per our agreement. Regrettably, it has come to our attention that a payment for the aforementioned products/services, as per our invoice/contract number [Invoice/Contract Number], remains outstanding. Despite several friendly reminders regarding the unpaid balance, we have not received any response or payment from you. As per the terms and conditions outlined in our agreement, full payment was due on [Due Date]. As of the composition of this letter, [Number of Days Past Due] days have elapsed since the payment deadline. This overdue amount now totals [Total Amount Due], which includes the original amount of [Original Amount Due] plus any applicable late fees or interest charges as per our agreement. Given the circumstances, we hereby demand immediate payment of the outstanding balance. It is imperative that you remit the full amount of [Total Amount Due] by [Payment Deadline — Suggested a reasonable timeframe within 10-14 days from the date of this letter] to avoid any further escalation of this matter. We understand that occasional delays occur due to unforeseen circumstances. If there are extenuating circumstances preventing timely payment, we kindly request that you contact our accounts department at [Your Company’s Phone Number] or via email at [Your Company’s Email Address] to discuss an agreeable resolution or to set up a customized payment plan. Please be advised that failing to respond promptly or neglecting to remit the payment may leave us with no alternative but to pursue legal action to recover the debt. This could result in additional legal fees, collection costs, and, if necessary, adverse effects on your credit rating. We truly value our business relationship with you and believe that this can be resolved amicably without resorting to further action. We strongly urge you to honor your obligations by settling the overdue amount immediately, ensuring the continuation of our positive business association. Thank you for your immediate attention to this matter. We look forward to receiving payment by [Payment Deadline]. Failure to comply will leave us with no choice but to proceed accordingly. Sincerely, [Your Name] [Your Title/Position] [Your Company Name]