A gift acknowledgment letter weaves together your nonprofit's appreciation, engagement, and compliance efforts following a donor's generosity. Thank you for your recent gift to the Parallel Laboratory in the Department of Electrical Engineering and Computer Science.As you know, this important. 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. Include the nonprofit's EIN so the the donor can to check the charity's tax-exempt status with the IRS. Gift acknowledgement letters are important for two reasons. First, they provide proof so donors can claim a US tax exemption. As the chief law enforcement officer in the state, I am committed to protecting donors and charitable assets, and ensuring that donations are not diverted or. This Climate Action Plan (CAP) details specific measures that will be implemented in Sacramento County.