Tax help for military filers

Go back through your Illinois state return.   You will come to a screen that says How Illinois treats income differently.   Click Edit next to Military income and make the adjustment on that screen.   

You may subtract tax-exempt military pay that is in your AGI, including

• pay for duty in the armed forces, including basic training,
• pay for duty as a cadet at the U.S. Military, Air Force, and Coast Guard academies, as a midshipman at the U.S. Naval Academy, or in ROTC, and
• pay for duty for serving in the U.S. Armed Forces Reserves or a National Guard unit, including a National Guard unit of another state.