1. Any taxpayer who makes a qualifying contribution to an educational assistance organization after August 28, 2021, may claim a credit against the tax otherwise due under chapter 143, other than taxes withheld under sections 143.191 to 143.265, and chapter 153 in an amount equal to one hundred percent of the amount the taxpayer contributed during the tax year for which the credit is claimed. No taxpayer shall claim a credit under sections 135.712 to 135.719 for any contribution made by the taxpayer, or an agent of the taxpayer, on behalf of the taxpayer’s dependent or, in the case of a business taxpayer, on behalf of the business’s agent’s dependent.

2. The amount of the tax credit claimed shall not exceed fifty percent of the taxpayer’s state tax liability for the tax year for which the credit is claimed. The state treasurer shall certify the tax credit amount to the taxpayer. A taxpayer may carry the credit forward to any of such taxpayer’s four subsequent tax years. All tax credits authorized under the program shall not be transferred, sold, or assigned, and are not refundable.

3. The cumulative amount of tax credits that may be allocated to all taxpayers contributing to educational assistance organizations in any one calendar year shall not exceed fifty million dollars, which amount shall be annually adjusted by the state treasurer for inflation based on the Consumer Price Index for All Urban Consumers for the Midwest region, as defined and officially recorded by the United States Department of Labor or its successor, such annual increase will cease when the amount of tax credits reach seventy-five million dollars. The state treasurer shall establish a procedure by which, from the beginning of the calendar year until August first, the cumulative amount of tax credits shall be allocated on a first-come, first-served basis among all educational assistance organizations. If an educational assistance organization fails to use all, or some percentage to be determined by the state treasurer, of its allocated tax credits during this period, the state treasurer may reallocate these unused tax credits to those educational assistance organizations that have used all, or some percentage to be determined by the state treasurer, of their allocated tax credits during this period. The state treasurer may establish more than one period and reallocate more than once during each calendar year. The state treasurer shall establish the procedure described in this subsection in such a manner as to ensure that taxpayers can claim all the tax credits possible up to the cumulative amount of tax credits available for the calendar year.

4. A taxpayer who makes a contribution to an education assistance organization shall not designate the student who will receive a scholarship grant.

5. The provisions of sections 135.712 to 135.719 and sections 166.700 to 166.720 shall be effective in any fiscal year immediately subsequent to any fiscal year in which the amount appropriated for pupil transportation under section 163.161 equals or exceeds forty percent of the projected amount necessary to fully fund transportation aid funding for fiscal year 2021. If the amount appropriated for transportation under section 163.161 in any succeeding year falls below such amount, no additional scholarships for newly qualified students shall be awarded.