Arizona’s Catholic Tuition Support Organization

Give the Gift of Quality Education with your Arizona Tax Credit


Arizona’s Catholic Tuition Support Organization (CTSO) Bank Processing Center P.O. Box 14467 Tucson, Arizona 85732-4467


Arizona’s Catholic Tuition Support Organzation (CTSO) P.O. Box 31 Tucson, Arizona 85702


192 S. Stone Tucson, Arizona 85701 Phone: (520) 838-2558 Fax: (520) 838-2578

How tax credits work, see our FAQs or call us to learn more: (520) 838-2558.

Why Give to CTSO?

How tax credits work, see our FAQs or call us to learn more: (520) 838-2558.

Quick Facts

Referral Program

This program will provide additional funds for families who may receive scholarships and for all families, a very useful tool for you to pursue tuition assistance from taxpayers who wish to benefit from Arizona’s Private Tuition dollar for dollar Tax Credits toward their state tax liability.

Go to Referral Program

Who We Are

We are a non-profit 501c3 School Tuition Organization (STO) whose mission it is to provide tuition assistance to qualified students attending Diocese of Tucson schools as well as other private schools throughout the State of Arizona. It is our goal to provide opportunity for these students to earn an education centered in good morals, high academic standards, and faith-filled values made possible through scholarship assistance from tax credit dollars. 


© 2021 Catholic Tuition Support Organization, Tucson, Arizona.

Arizona Catholic Tuition Support Organization (CTSO) is an IRS 501 (c) (3) nonprofit organization, and is a qualified tax credit organization under the State of Arizona.