This letter should acknowledge the gift of stock, such as the name and number of shares. Donors must have a bank record or written acknowledgment from the nonprofit before claiming a tax deduction for a charitable contribution.What do you need to include in your donation acknowledgment letter? Complete the Donate Stock form below and send to us. A Better Chance, an education charity, uses a version of this letter to thank donors who give stock. Your letter should acknowledge the gift of stock, including the ticker, the number of shares, and the date of the donation.