Both Senator Dave Syverson and Ralph Martire, of the Center for Tax and Budget Accountability spoke out with differing opinions on the gradual income tax. That is higher rates on higher incomes, and lower rates on lower incomes.
Right now, Illinois uses a flat tax system, which means all incomes are taxed the same. It will take a constitutional amendment before anything can change.
Legislators have to decide whether to approve the constitutional amendment. That will determine whether voters have the opportunity to voice their opinion on the ballot.