View the list of Sample Business Letters Overdue Payment Reminder Letter Disclaimer: Be aware that some of these sample letters have legal, financial, or other implications. If you are not sure about the use of any letter, consult with an appropriate professional first. Overdue Payment Reminder Letter Dear Our records indicate that payment on your account is overdue in the amount of $ . If the amount has already been paid, please disregard this notice. If you have not yet mailed your payment, why not make out your check and place it in the enclosed envelope while this reminder is has your full attention. Thank you in advance for your anticipated cooperation in this matter.