What do you need to include in your donation acknowledgment letter? Thanks for your support of our cause and mission.Please fill in the information below to receive an official letter of acknowledgement for your donations. All donors receive a charitable tax receipt or acknowledgement for all donated items upon acceptance of approved and completed form. 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. Include the nonprofit's EIN so the the donor can to check the charity's tax-exempt status with the IRS. The letter serves as a thank you and required written acknowledgment, and should include specific language from the downloadable template for tax purposes. The donor must receive a written acknowledgement from the nonprofit to substantiate the gift. Please follow IRS guidelines in completing the description of goods donated and the value of the goods donated. How will I receive a tax receipt for my donation(s)?