A nonrefundable individual tax credit for voluntary cash contributions to a qualifying charitable organization (QCO). Donation receipts are important!Here's how to create donation receipts your donors (and the IRS) will love. To donate, complete the form in the donation brochure or donate online. This publication explains how individuals claim a deduction for charitable contributions. Sample Donor Acknowledgement Letter for Cash Donation. Out-of-Arizona-State Donors. Dear family and friends,. Your donation to BGCAZ is eligible for Arizona's Tax Credit program, a dollar-for-dollar tax credit for Arizona taxpayers. Parttime residents are also subject to paying Arizona income tax.