Keep a record of any items you donate to a charity. Learn how to create customized tax deduction letter for your church - with the help of 2 FREE samples and steps on how Donorbox can help!The main purpose of this letter is to acknowledge a one-time gift or donation made to the church. Enter the name of the corporation at the top of the form to complete the certificate's title. General Information. Your nonprofit organization may be eligible for a full or partial property tax exemption depending upon how the property is used. Your donation receipt can be a mailed thankyou letter or an emailed acknowledgment. Select a process that works best for your nonprofit. Open your checkbook. The foreign religious organization should submit complete exemption documents, such as a founding document and IRS determination letter.