Illinois Individual Income Tax
Form IL-1040 Illinois Individual Income Tax Return Form IL-1040 Instructions More Forms IL-1040 Due Date The due date for fi ling your 2011 Form IL-1040 and paying any tax you owe is extended to...
Form IL-1040 Illinois Individual Income Tax Return Form IL-1040 Instructions More Forms IL-1040 Due Date The due date for fi ling your 2011 Form IL-1040 and paying any tax you owe is extended to...