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This version of the form is not currently in use and is provided for reference only. Download this version of
Instructions for Form IL-1040-X
for the current year.
Instructions for Form IL-1040-X Amended Individual Income Tax Return - Illinois
This document contains official instructions for Form IL-1040-X , Amended Individual Income Tax Return - a form released and collected by the Illinois Department of Revenue. An up-to-date fillable Form IL-1040-X is available for download through this link.
FAQ
Q: What is Form IL-1040-X?
A: Form IL-1040-X is the amended individual income tax return for Illinois.
Q: When should I use Form IL-1040-X?
A: You should use Form IL-1040-X if you need to correct or make changes to your previously filed Form IL-1040.
Q: How do I fill out Form IL-1040-X?
A: To fill out Form IL-1040-X, you will need to provide your personal information, details of the original return, and the changes you are making.
Q: Can I file Form IL-1040-X electronically?
A: No, you cannot file Form IL-1040-X electronically. It must be filed by mail.
Instruction Details:
- This 5-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.
Download your copy of the instructions by clicking the link below or browse hundreds of other forms in our library of forms released by the Illinois Department of Revenue.
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