A gift acknowledgment letter weaves together your nonprofit's appreciation, engagement, and compliance efforts following a donor's generosity. What do you need to include in your donation acknowledgment letter?A donor acknowledgement letter should include a few specific items to assist the donor and help your organization comply with IRS regulations. Donation thank you letter examples to boost donor loyalty. Learn how to craft personalized letters with LettrLabs. Include the nonprofit's EIN so the the donor can to check the charity's tax-exempt status with the IRS. Here's 20 ideas for how to make your donation thank you letters really make an impact – and hopefully create more lifelong donors. The following sample thank-you notes illustrate the kinds of things donors would love to hear about you and the impact their generosity has had on your life. Does wording of disclosure have to be used in situations where the donation is unsolicited? My partner and I wish to get married in Nevada, and no longer wish to be in a domestic partnership.