AZ HB2553

Increases the minimum percentage of annual revenues that school tuition organizations (STOs) must allocate to educational scholarships or tuition grants from 90% to 95%.

Changes language throughout the statute from "permitted" to "allowed" and corrects citations to national school lunch acts from "1751 through 1785" to "1751 through 1793."

Applies the 95% allocation requirement to both income tax credits (sections 43-1183, 43-1184, 43-1089, 43-1089.03) and insurance premium tax credits (sections 20-224.06, 20-224.07).

Requires STOs to notify taxpayers and offer refunds when contributions are not eligible for tax credits due to organization removal from certification.

Updates email terminology and maintains existing operational requirements including scholarship restrictions, donor recommendations limitations, and dual enrollment prohibitions.