Everything your nonprofit needs to know about Donation Receipts: When to issue, what to include, how to automate the process. Learn the best practices!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. Donation receipts are important! Here's how to create donation receipts your donors (and the IRS) will love. How do I write a nonprofit donation tax receipt? Your donation receipt can be a mailed thank-you letter or an emailed acknowledgment. Include the nonprofit's EIN so the the donor can to check the charity's tax-exempt status with the IRS. There are multiple conditions, and also a hierarchy of those conditions, since some donors meet multiple criteria.