In this post, I'm breaking down how to write a donation letter. This document provides a sample format for a letter acknowledging an in-kind contribution or donation.Try our free donation request letter templates! Download our standard template or check out our example letters for events, auctions, schools, and more. View and obtain the entire collection of SCAO-approved forms. The SCAO forms that are most frequently requested have been included on this site in . Let's walk through common examples of donation letters, starting with a template of the basic format to follow.