Learn what an acknowledgement receipt is and how to create one for your business (with a template and two examples). The sample acknowledgement letters for receipt of payment provided below can be used as format templates for official and personal purposes.Check out our letter of acknowledgement template selection for the very best in unique or custom, handmade pieces from our templates shops. Thank you for your prompt payment. Include Essential Information: Date, parties involved, transaction details, and invoice numbers. Check out our letter of acknowledgement template selection for the very best in unique or custom, handmade pieces from our templates shops. There is no official IRS form that the exempt organization has to complete. When does the nonprofit need to send the written acknowledgment letter to donors? This distribution represents a full and complete satisfaction of my interests in the Trust and the Estate.