Illinois Income Tax Forms

Illinois Income Tax Forms

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Illinois Income Tax Forms

 

Individual Income Tax

 

Form IL-1040 Individual Income Tax Return

 

Form IL-1040-X Amended Individual Income Tax Return

 

 

Corporate Income Tax 

 

Form IL-1120 Corporation Income and Replacement Tax Return 

 

Form IL-1120-X Amended Corporation Income and Replacement Tax Return

 

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