INC TX-R AND D CREDIT Senate SponsorsSen. Chuck Weaver 1/9/2019SenateSession Sine Die 35 ILCS 5/201from Ch. 120, par. 2-201Amends the Illinois Income Tax Act. Makes changes concerning the calculation of the research and development credit by providing that, for tax years ending on or after December 31, 2018, "qualifying expenditures for the base period" means 50% (currently, 100%) of the average of the qualifying expenditures for each year in the base period. Effective immediately. 2/16/2018SenateFiled with Secretary by Sen. Chuck Weaver 2/16/2018SenateFirst Reading 2/16/2018SenateReferred to Assignments 2/27/2018SenateAssigned to Revenue 4/13/2018SenateRule 2-10 Committee Deadline Established As April 27, 2018 4/27/2018SenateRule 3-9(a) / Re-referred to Assignments 1/9/2019SenateSession Sine Die