What do you need to include in your donation acknowledgment letter? Knowing how to write an in-kind donation letter for your nonprofit means understanding the do's and don'ts.Let's check them out! A gift acknowledgment letter weaves together your nonprofit's appreciation, engagement, and compliance efforts following a donor's generosity. Want to learn how to write and structure donor acknowledgment letters? Check out these tips and sample letters to make a greater impact. "Thank you for your contribution of (insert amount of cash donation) on Date. No goods or services were provided in exchange for this contribution. When acknowledging these donations, include the name of the donor, the number of shares, the name of the security, and the date when the transfer was completed. A timely and sincere thank you message that provides evidence of how funds raised are making a difference will help you keep donors interested.