What do you need to include in your donation acknowledgment letter? A gift acknowledgment letter weaves together your nonprofit's appreciation, engagement, and compliance efforts following a donor's generosity.A donor acknowledgement letter should include a few specific items to assist the donor and help your organization comply with IRS regulations. Take a look at what makes a good thank you letter for a donation or use one of our provided templates to help get you started. Gift acknowledgement letters are important for two reasons. First, they provide proof so donors can claim a US tax exemption. Each donor receipt should include the name of the donor as well. Include the nonprofit's EIN so the the donor can to check the charity's tax-exempt status with the IRS. While advocacy is not technically a fundraising idea, raising awareness and money go hand-in-hand. To find out if your corporation may qualify for a tax break, obtain and read the.