How do I set up a recurring donation after my account has been set up? First you must enter your credit card information.NOTE: You must also complete Arizona Form 301,. Depending on how much, or how you chose to donate, your donation receipt may be split into three separate categories for tax purposes. Gov and emailed to the email address you have provided. Donation receipts are important! Here's how to create donation receipts your donors (and the IRS) will love. See Guidelines for more information on how to fill out Form 10621. Making a Tax Credit donation is easy. Simply fill out this form and return it to the school office or mail it, along with your payment.