Below is a list of forms that you may download for free from our website. The sample acknowledgement letters for receipt of payment provided below can be used as format templates for official and personal purposes.What do you need to include in your donation acknowledgment letter? This document provides guidelines for writing an acknowledgement letter. An acknowledgement letter recognizes someone's efforts or contributions. Get your Business Tax Receipt. The county and city will require a Business Tax Receipt license. All Application Forms are available for download in Adobe Acrobat PDF format. You will need the free Acrobat Reader to view and print the PDF files.