We've created this stepbystep guide on everything you need to know about creating a donation receipt letter for tax purposes. Donation receipts are important!Here's how to create donation receipts your donors (and the IRS) will love. What do you need to include in your donation acknowledgment letter? Master donation receipts fast with our tips, free templates and messaging samples. If the business has donated in the past, the first paragraph is the perfect place to mention that. In this post, I'm breaking down how to write a donation letter. There are many other reasons to send a receipt after receiving a donation. The letter serves as a thank you and required written acknowledgment, and should include specific language from the downloadable template for tax purposes. This documentation should include receipts, appraisals, and other information that supports the value of the donations.