The easy answer for anyone who uses a tax preparation service is that all tax preparers and even the software systems are all set up for these type of tax credit.
If you do your own taxes without the use of a software package there will be a simple form that you will need to fill out.
Donations to Arizona Tuition Connection for the Original tax credit are filed using Arizona Form 323.
Donations made for the Overflow/ Switcher/PLUS tax credit are filed using Arizona Form 348.
The information for these forms will be provided on the receipt you will receive upon completion of your donation.