If you mail in your contribution, you will be mailed a receipt within a few days of receiving your contribution. We've created this stepbystep guide on everything you need to know about creating a donation receipt letter for tax purposes.Upon payment, a pre-numbered receipt will be issued to you for tax reporting purposes. In that case, all you need to provide in the donation receipt is the name and EIN of the organization, date of donation, and a description of the donated item. Gov, including requests for donation letters. Just fill out the secure form or you may make your donation in person at the Pima County JTED District Office. The Treasurer's Office is located at: Pima County Public Service Center 240 N. Stone Ave. Tucson, Arizona 85701 If you contribute using our secure online form to pay with a major credit card, you will receive a receipt in your email that you can print out. How do I claim my tax credit?