Iowa taxpayers, who contribute to a School Tuition Organization (STO) receive an Iowa tax credit equal to 65% of their contribution. The amount contributed may also qualify as a charitable donation on federal tax returns.

STOs receive voluntary cash contributions from Iowa taxpayers and allocates those funds in tuition grants to Iowa school children, who in turn, use those grants to attend one of the schools represented by a STO. At least 90% of the money received by a STO must go back out in tuition grants.