In this post, I'm breaking down how to write a donation letter. Use Schedule A (Form 1040) to figure your itemized deductions.Bystep guide on how to fill out a Goodwill tax donation receipt. This form is available at our stores in Maine, New Hampshire and Vermont. Complete the online vehicle donation form or call 833-SHC-KIDS (833-742-5437) seven days a week. Learn more about the program. 1. Print the template on letterhead. Regarding items categorized as "Not Yet Available", these documents were not available at the time the. Reference Manual was posted. Learn how to write the best donation request letters to secure support for your nonprofit, including six templates to get started.