Modifies provisions relating to the Missouri working family tax credit act and makes the tax credit refundable

HB 1571 modifies Missouri's Working Family Tax Credit by making it refundable starting in 2026. This means eligible working families who qualify for the federal Earned Income Tax Credit (EITC) can receive a cash refund if their Missouri tax credit exceeds their tax liability, rather than losing the excess amount. The bill sets a base credit of 10% of the federal EITC (increasing to 20% if state revenue grows sufficiently) and requires the state tax department to automatically notify eligible taxpayers who didn’t claim the credit. It directly affects Missouri residents with low-to-moderate incomes who qualify for the federal EITC, providing them with additional financial support through a refundable credit.