Download Income Tax Instructions (PDF)

Illinois Illinois Income Tax Instructional Booklet updated 02/2013

Printable Illinois Income Tax Income Tax Instructions

This printable booklet includes instructions for filling out your IL-1040 form For more information, see the Illinois Income Tax page.

Source: http://www.revenue.state.il.us/TaxForms/IncmCurrentYear/Individual/IL-1040-Instr.pdf