Income Tax Republican State Officials: Democrats Will Come After Middle Class With 'Fair' Income Tax By Breanna Grow • Jan 18, 2020 Breanna Grow / WGLT Come November, Illinois voters will decide whether to change the state’s income tax structure from the current flat tax to a new progressive or graduated model. Democrats Press Brady About GOP Solutions In Lieu Of Graduated Tax By Charlie Schlenker • Apr 17, 2019 Charlie Schlenker / WGLT Democrats challenged state Rep. Dan Brady, R-Normal, during a sparsely attended town hall meeting Tuesday about a proposal for a graduated income tax. Brady, House GOP Oppose Graduated Income Tax By Ryan Denham & Dana Vollmer • Feb 27, 2019 Jeff Smudde / WGLT Illinois House Republicans are speaking out against Gov. JB Pritzker’s proposed graduated income tax. House Endorses Switch To Graduated Income Tax By AP • May 29, 2018 Seth Perlman / AP The Illinois House has endorsed the idea of switching to a graduated income tax.