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This version of the form is not currently in use and is provided for reference only. Download this version of
Form IL-1120-X
for the current year.
Form IL-1120-X Amended Corporation Income and Replacement Tax Return - Illinois
What Is Form IL-1120-X?
This is a legal form that was released by the Illinois Department of Revenue - a government authority operating within Illinois. Check the official instructions before completing and submitting the form.
FAQ
Q: What is Form IL-1120-X?
A: Form IL-1120-X is the Amended Corporation Income and Replacement Tax Return for Illinois.
Q: Who needs to file Form IL-1120-X?
A: Corporations in Illinois that need to amend their previously filed income and replacement tax return.
Q: When should Form IL-1120-X be filed?
A: Form IL-1120-X should be filed within three years from the original due date or two years from the date the tax was paid, whichever is later.
Q: What information is required on Form IL-1120-X?
A: Form IL-1120-X requires the corporation to provide information about the original return, the changes being made, and the reasons for the changes.
Form Details:
- Released on December 1, 2020;
- The latest edition provided by the Illinois Department of Revenue;
- Easy to use and ready to print;
- Quick to customize;
- Compatible with most PDF-viewing applications;
- Fill out the form in our online filing application.
Download a fillable version of Form IL-1120-X by clicking the link below or browse more documents and templates provided by the Illinois Department of Revenue.
Download Form IL-1120-X Amended Corporation Income and Replacement Tax Return - Illinois
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