In-Kind Donation – Donation of Goods or Property. Sometimes a donor will ask a nonprofit to write a letter vouching for the dollar value of a non-cash gift."Learn about 501(c)(3) donation receipt requirements, verification steps, and sample templates for tax-deductible donations. Is the recipient organization required to provide written documentation when non-deductible items are donated? Filling out this form is straightforward. There is no official IRS form that the exempt organization has to complete. When does the nonprofit need to send the written acknowledgment letter to donors? Gifts to the University do not include sponsored project solicitations. Form D-40EZ is no longer available for use for Tax Year 2019 and later. Filling Out the Form Properly.