Arizona Christian School Tuition Organization (ACSTO)
Arizona Christian School Tuition Organization (ACSTO) is a School Tuition Organization certified by the Arizona Department of Revenue, based in Chandler. It accepts donations under Arizona's individual (original and switcher) STO credits and awards private school tuition scholarships. Since 1998 it has received more donations than any other Arizona STO, about $416.5 million, and paid about $350.6 million in scholarships. In FY2025 it received the most original individual credit donations (18,186 gifts, $18.9 million). It reported scholarships for 4,610 students in FY2025, per the department's March 2026 report.
- Tax-credit scholarship organization
For families
Scholarships pay tuition at qualified Arizona private schools. Apply directly to the STO; many families apply to several STOs and combine awards up to the cost of tuition. A student cannot receive an STO scholarship in the same year the family signs an Arizona ESA contract.
For donors
Arizona taxpayers can give for the original credit (2026 cap $787 single, $1,570 married filing jointly; Form 323) and the switcher credit (2026 cap $784 single, $1,561 married filing jointly; Form 348). Gifts made through April 15, 2027 can count on the 2026 return.
About Arizona Christian School Tuition Organization (ACSTO)
- States served
- Arizona
- Who it serves
- Students attending or enrolling in qualified Arizona private schools.
- Programs
- Arizona Original Individual Tax Credit Scholarship; Arizona Switcher Individual Tax Credit Scholarship
- Last checked
- Oct 13, 2026
Profile compiled from the organization’s site and official state lists. Each SGO sets its own rules and decides every application.
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