Request a Donation Receipt. Please complete this form to receive a letter that can be used for tax purposes.We also require a copy of the IRS determination letter for the organization. Donations may be sent to: Gifts from the Heart P.O. Box 269057. Sacramento CA 95826-9057. Learn more about the potential tax benefits of charitable holiday giving. Your holiday donations may boost your refund, depending on the organization. Is my donation tax-deductible? Purchasers who wish to donate unused tickets back to the nonprofit CSRM Foundation will be given a tax letter of donation for the full amount of the tickets. See the various ways you can support the shelter and its many pets.