[Your Name] [Your Address] [City, State, ZIP Code] [Email Address] [Phone Number] [Date] [Recipient's Name] [Recipient's Address] [City, State, ZIP Code] Subject: Notification of Insufficient Funds Dear [Recipient's Name], I hope this letter finds you in good health. I am writing to bring to your attention an issue regarding the insufficient funds in my bank account for the recent transaction made on [date]. As per my records, the transaction was made to [company/individual name] in the amount of [transaction amount]. Unfortunately, due to unforeseen circumstances, there were insufficient funds available in my account to cover the transaction. I sincerely apologize for any inconvenience this may have caused you. It was unintentional, and I take full responsibility for this oversight. To rectify this matter promptly, I have taken immediate actions to deposit the necessary funds to cover the transaction. The deposited amount, which is [deposit amount], will effectively resolve the insufficient funds issue. I kindly request your understanding and cooperation during this process. Moreover, I assure you that this incident is an exception and does not reflect my usual financial standing. Such instances are highly uncommon, and I have already implemented measures to avoid any future occurrence. I highly value our relationship and strive to maintain a prompt and efficient payment history. In light of this occurrence, I sincerely apologize for any inconvenience caused. I have briefed my bank about the situation, and they are committed to processing the payment immediately. I kindly request your patience and understanding as it may take a short period of time for the funds to be credited to your account. Please feel free to contact me at [phone number] or email me at [email address] if you have any further questions or concerns regarding this matter. I am dedicated to resolving this issue amicably and ensuring your satisfaction. Once again, I apologize for any inconvenience caused and appreciate your understanding. Thank you for your attention to this matter. I look forward to your positive response. Yours sincerely, [Your Name]