Under the Arizona Charitable Tax Credit Law (ARS43-1088), you can receive a dollar-for-dollar tax credit on your state income taxes, up to $400 for married couples filing jointly or $200 for taxpayers filing as single or head of household.

This tax credit is available to donors who make contributions to qualifying charities, such as Ronald McDonald House Charities of Phoenix, Inc., that provide assistance to the working poor.  The working poor tax credit is a separate credit from the school tax credit. Eligible taxpayers may claim both the working poor and school tax credits. Please contact your tax advisor for information regarding eligibility. Those who donate to Ronald McDonald House will receive a thank you letter, which can be used for tax documentation.

Call the Arizona Department of Revenue at 602-255-2060 or visit the Arizona Department of Revenue website for information. 

Arizona Form 321
http://www.revenue.state.az.us/Forms/2007/321_f.pdf

Arizona Form 321 Instructions
http://www.revenue.state.az.us/Forms/2008/credits/credit%20instructions/321%20instr.pdf