Dear [Client's Name], I am writing to inform you that we have recently discovered an overpayment on your account. As a responsible and ethical business, we are committed to promptly addressing this error and returning the funds to you. Upon thorough review of our records, it has come to our attention that an overpayment in the amount of [overpayment amount] was made on [date of overpayment]. We sincerely apologize for any inconvenience this may have caused you and assure you that we are taking immediate action to rectify the situation. Under Colorado law, any overpayment must be returned to the client within a reasonable time frame. We are dedicated to complying with this legal requirement and ensuring that you are promptly reimbursed for the excess payment. Enclosed with this letter, you will find a check for the exact amount of the overpayment. Please take the time to carefully review the enclosed check along with this letter to verify the accuracy of the amount returned. If you have any concerns or discrepancies regarding the refund, please reach out to us as soon as possible, and we will investigate the matter further. We understand that mistakes happen, but we are committed to providing excellent service and maintaining your trust as our valued client. We appreciate your understanding in this matter and once again apologize for any inconvenience caused. If you require any further assistance or have any questions, please do not hesitate to contact our customer service department at [phone number] or [email address]. We are available to address any concerns you may have and provide any necessary clarification. Thank you for your continued support and understanding. We value your business and look forward to serving you in the future. Sincerely, [Your Name] [Your Company Name] [Your Contact Information] Keywords: Colorado, Sample Letter, Return of Overpayment, Client, overpayment amount, date of overpayment, legal requirement, refund, accuracy, reimburse, invoice, customer service, clarification.