Subject: Urgent Notification of Late Payment — Action Required [Your Name] [Your Address] [City, State, ZIP Code] [Email Address] [Phone Number] [Date] [Recipient's Name] [Recipient's Designation] [Company/Organization Name] [Address] [City, State, ZIP Code] Dear [Recipient's Name], I hope this letter finds you well. I am writing to bring to your attention the overdue payment pertaining to the invoice [Invoice Number/Reference]. It has come to our attention that the payment has still not been received, although the payment due date has already passed on [Due Date]. As mutually agreed upon in our business relationship, the payment terms specified [here/within our contract] state that full payment of the aforementioned invoice should have been received within [specific timeframe]. Unfortunately, despite multiple reminders and extensions of the payment deadline, we have not yet received payment from your end. It is important to note that late payments severely impact our ability to meet our own financial obligations and resources for continuous operations and growth. We kindly request that you immediately process the payment in accordance with the agreed terms to avoid any further adverse consequences. To facilitate the payment process, please find attached a copy of the original invoice [Attach Invoice Copy]. We kindly ask you to remit the payment in full, totaling [Total Amount Due], to our provided bank account details as follows: Bank Name: [Bank Name] Account Holder: [Your Name/Company Name] Account Number: [Account Number] Routing Number: [Routing Number] Swift Code: [Swift Code] Alternatively, you can also choose to make the payment online via [Preferred Online Payment Method], using the following link: [Payment Link]. In the event that there are any concerns or disputes surrounding this payment, we kindly request that you reach out to our Accounts Department at [Accounts Department Contact Information] within the next [number of days] to discuss the matter and seek a mutually beneficial resolution. Our team is eager to resolve any issues promptly and professionally. Please treat this matter with utmost urgency, considering the gravity of the situation. Failure to remit the payment or initiate a dialogue within [specified timeframe] will leave us with no choice but to consider taking appropriate legal action to recover the outstanding amount, along with any associated costs incurred. We value our ongoing business relationship with your esteemed organization and hope to resolve this matter swiftly. Your immediate attention and favorable response will be greatly appreciated. Thank you in advance for your cooperation. Should you require any further information or clarification, please do not hesitate to contact me directly at [Your Contact Information]. Yours sincerely, [Your Name] [Your Designation] [Your Company/Organization Name]