Subject: Urgent Letter Regarding Outstanding Payment — Opposing Attorney [Your Name] [Your Address] [City, State, Zip Code] [Email Address] [Phone Number] [Date] [Opposing Counsel's Name] [Opposing Counsel's Firm Name] [Opposing Counsel's Address] [City, State, Zip Code] Re: Outstanding Payment Due — Case: [Case Number] Dear [Opposing Counsel's Name], I hope this letter finds you well. I am writing on behalf of my client, [Your Client's Name], to address the issue of an outstanding payment pertaining to our legal matters in the above-mentioned case. It has come to our attention that the agreed-upon payment, as stipulated by the court order/settlement agreement, has not been received. As a professional courtesy, I kindly request your immediate attention to this matter to resolve the outstanding payment of [Specify Outstanding Amount]. Due to the importance of timely financial transactions, we ask that you remit the full payment within [Specify Timeframe] to avoid any unnecessary delays or complications. Failure to settle the outstanding payment within the specified timeframe may result in additional legal action to ensure the fulfillment of the court order/settlement agreement. Moreover, persistent non-compliance may lead to unfavorable consequences, including but not limited to, legal costs, interest charges, and potential sanctions. To facilitate a prompt resolution, I have attached a copy of the relevant court order/settlement agreement for your reference. Kindly review it and ensure that the payment is processed in accordance with its terms. Should you have any questions or require further clarification, please do not hesitate to contact me at [Your Phone Number] or by email at [Your Email Address]. We believe that prompt communication and swift resolution of outstanding matters are essential for maintaining a professional and cooperative working relationship. Your immediate attention in this matter is greatly appreciated. We trust that you will take the necessary steps to ensure the timely payment of the outstanding amount. We look forward to your prompt response. Thank you for your cooperation. Sincerely, [Your Name] [Your Title] [Your Firm's Name (if applicable)] [Attachments: Copy of relevant court order/settlement agreement]