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Instructions for Form IL-1120-ST-X
for the current year.
Instructions for Form IL-1120-ST-X Amended Small Business Corporation Replacement Tax Return - Illinois
This document contains official instructions for Form IL-1120-ST-X , Amended Small Business Corporation Replacement Tax Return - a form released and collected by the Illinois Department of Revenue.
FAQ
Q: What is Form IL-1120-ST-X?
A: Form IL-1120-ST-X is the Amended Small Business Corporation Replacement Tax Return for the state of Illinois.
Q: Who should file Form IL-1120-ST-X?
A: Small business corporations in Illinois who need to amend their original tax return should file Form IL-1120-ST-X.
Q: When should Form IL-1120-ST-X be filed?
A: Form IL-1120-ST-X should be filed within three years from the date the original return was filed or within one year from the date the tax was paid, whichever is later.
Q: How do I complete Form IL-1120-ST-X?
A: You should follow the instructions provided by the Illinois Department of Revenue to complete Form IL-1120-ST-X. The instructions will guide you through the process of amending your tax return.
Instruction Details:
- This 6-page document is available for download in PDF;
- Might not be applicable for the current year. Choose a more recent version;
- Complete, printable, and free.
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Download Instructions for Form IL-1120-ST-X Amended Small Business Corporation Replacement Tax Return - Illinois
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