Contents Federal income tax Individual calendar year Monday april 18. reason: emancipation day Illinois Department of Revenue Individual Income Tax Return IL-1040 Front (R-12/18) Printed by authority of the State of Illinois, 1. 2018 Form IL-1040 That’s down significantly from 2010 … co-chair of the tax department at Moritt Hock & Hamroff, a law firm … Continue reading 1040 Tax Form 2010