Include the nonprofit's EIN so the the donor can to check the charity's tax-exempt status with the IRS. A tax donation letter contains details about the donation, including the date, a description, donor information, and value.Find answers to Frequently Asked Questions about how and why to support AHN with a financial contribution, including planned gifts from an estate. 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. This letter sholl serue as you receipt fot income tax putposes. The IRS provides that a person can deduct charitable contributions from federal income tax only if made to a qualified organization. It's as simple as filling out a form and can provide tax benefits. So, yes, I think the taxes should go up partially," he said. "But not that outrageous amount.