Dear [Recipient's Name], I hope this letter finds you in good health and high spirits. I am writing to discuss the remittance of a late fee that was inadvertently overlooked by our firm, [Company Name], for the payment of [service/product]. We sincerely apologize for any inconvenience this may have caused and assure you that steps have been taken to prevent such occurrences in the future. It has come to our attention that the payment for the aforementioned service/product was received by our accounts department after the due date specified on the invoice. We take full responsibility for this oversight and understand that it is essential to promptly settle any financial obligations to maintain a strong business relationship with our valued clients like yourself. We truly value your association with us, and it is our earnest desire to rectify this situation immediately. As an act of goodwill, we have decided to waive the late fee that was associated with this payment. The revised invoice, which excludes the late fee, is attached to this letter for your reference. Please accept our sincerest apologies for any inconvenience caused by this delay. We greatly appreciate your understanding and cooperation in this matter. It is our utmost priority to provide exceptional service and maintain customer satisfaction. If you have any further questions or concerns regarding this matter, please do not hesitate to contact our accounts department at [contact information]. Our team will be more than willing to assist you and provide any additional information you may require. Once again, we apologize for the oversight, and thank you for your understanding. We are committed to resolving this matter promptly and ensuring a seamless experience for you in the future. Thank you for your continued support and trust in [Company Name]. Warm regards, [Your Name] [Your Title/Position] [Company Name]