PDF
Word
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 the Form IL-1120?
A: The Form IL-1120 is the Corporation Income and Replacement Tax Return for the state of Illinois.
Q: Who needs to file the Form IL-1120?
A: Corporations that are doing business in Illinois or have income derived from Illinois sources need to file the Form IL-1120.
Q: What taxes are covered by the Form IL-1120?
A: The Form IL-1120 covers the corporation income tax and replacement tax in the state of Illinois.
Q: What information do I need to complete the Form IL-1120?
A: You will need various financial and tax-related information such as business income, deductions, credits, and tax payments to complete the Form IL-1120.
Q: When is the due date for filing the Form IL-1120?
A: The due date for filing the Form IL-1120 is generally the 15th day of the 3rd month following the end of the corporation's tax year.
Q: Are there any penalties for late filing of the Form IL-1120?
A: Yes, there are penalties for late filing of the Form IL-1120. It is important to file the return on time to avoid these penalties.
Q: Do I need to include any supporting documents with the Form IL-1120?
A: Yes, you may need to include supporting documents such as schedules, statements, or other attachments depending on your specific tax situation.
Form Details:
- Released on December 1, 2021;
- 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
1
2
3
4
