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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
for the current year.
Form IL-1120 Corporation Income and Replacement Tax Return - Illinois
What Is Form IL-1120?
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?
A: Form IL-1120 is the Corporation Income and Replacement Tax Return for Illinois.
Q: Who needs to file Form IL-1120?
A: Corporations operating in Illinois need to file Form IL-1120.
Q: What taxes does Form IL-1120 cover?
A: Form IL-1120 covers the corporation income tax and replacement tax in Illinois.
Q: When is Form IL-1120 due?
A: Form IL-1120 is due on the 15th day of the 3rd month following the close of the tax year.
Q: How can I file Form IL-1120?
A: You can file Form IL-1120 electronically or by mail.
Q: Are there any penalties for late filing?
A: Yes, there are penalties for late filing, so it's important to file on time.
Q: What supporting documents do I need to include with Form IL-1120?
A: You may need to include schedules, statements, and other supporting documents depending on your specific situation.
Q: Can I claim deductions on Form IL-1120?
A: Yes, you can claim deductions on Form IL-1120, but you should consult with a tax professional for specific guidance.
Q: How can I get help with filling out Form IL-1120?
A: You can contact the Illinois Department of Revenue for assistance with filling out Form IL-1120.
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 by clicking the link below or browse more documents and templates provided by the Illinois Department of Revenue.
Download Form IL-1120 Corporation Income and Replacement Tax Return - Illinois
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