We've created this stepbystep guide on everything you need to know about creating a donation receipt letter for tax purposes. This step-by-step guide will help you fill out the donation tax receipt and get things in order for tax season.Learn how to easily create your donation receipts and the best practices to follow in the year-end receipts to your donors. Donation receipts are important! Here's how to create donation receipts your donors (and the IRS) will love. Attach the completed D-400 Schedule AM to Form D-400. Form D-400, Lines 1 through 21. A donation receipt documents the details of a cash or property donation that's gifted to an individual cause or organization. What to include in donor acknowledgment letters? Receipt for charitable donation of property; Receipt from the person or company receiving the junked property.