First, craft your donation receipt outline with all the legal requirements included. State what the donor gave and make them feel appreciated.Giving receipts is an important practice since 501(c)(3) donations are tax-deductible to the donor. Our sample form provides an easy way to get started. What do donation receipts need to include? What do you need to include in your donation acknowledgment letter? A donation receipt documents the details of a cash or property donation that's gifted to an individual cause or organization.