It would be helpful if you provide a link to the Illinois Department of Revenue website which has this requirement.
Unable to find this requirement on the IL DOR website.
This website provides information on e-filing - <a rel="nofollow" target="_blank" href="
http://www.revenue.state.il.us/MyTax/IL-1040.htm">http://www.revenue.state.il.us/MyTax/IL-1040.htm</...>
and <a rel="nofollow" target="_blank" href="
http://www.revenue.state.il.us/Individuals/File/software.htm">http://www.revenue.state.il.us/Individ...>
