Illinois Corporation & LLC Filing Requirements

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We are providing the following for informational purposes only, which should not be a replacement for the advice of those licensed to give tax and legal advice. Further, although we make every effort to keep the information up-to-date, we make no guarantees as to the accuracy of the information presented in this current revision. Please report any problems you encounter to us by CLICKING HERE (please include state and defective link in your report).

 

General Info

Agencies

If you have further questions regarding business filings or fees, need additional filing forms, or want to contact your state's business division, here is the agency's contact information.

 

Secretary of State Office

Michael J. Howlett Building
501 S. 2nd Street, Room 350
Springfield, IL 62756
(217) 782-6961

http://www.cyberdriveillinois.com/departments/business_services/home.html

 

If you have further questions regarding business taxes, need additional tax forms, or want to communicate with your state's tax division, here is the agency's contact information.

 

Department of Revenue

Willard Ice Building

101 West Jefferson Street

Springfield, IL 62702

(217) 782-3336

1-800-732-8866

http://www.revenue.state.il.us/

Illinois State Statutes

To research the State Statutes for Illinois Corporations and Partnerships, click here.

To research the State Statutes for Illinois LLCs, click here.

 

Licensing

 

Business Licenses

Contact your state or local agencies regarding licensing issues.


Corporations 


Annual Filing Requirements

 

Annual Reports

Fee:

The Annual Report filing fee is $75. The annual franchise tax, included on the annual report, is computed by multiplying your corporation's paid-in capital by the franchise tax rate of 0.1%. The minimum tax is $25 and is NOT part of the $75 filing fee.

 

Forms:

Domestic Corporation Annual Report - Annual Report

Foreign Corporation Annual Report - Annual Report

E-File Annual Report - Annual Report E-Filing Directions

 

Due Date:

 

An annual report form must be filed each year within 60 days immediately preceding the first day of the anniversary month of incorporating (or in the case of a corporation that has established an extended filing month, the extended filing month of the corporation each year).

 

Corporation Tax Returns

Tax:

The income tax rate is 4.8% of the corporation's net income. In addition, Illinois assesses a personal property replacement tax based on net income (2.5% for corporations, 1.5% for S corporations and all other incorporated entities) on all businesses.

 

Forms:

Form IL-1120 - 2010 Corporation Income and Replacement Tax Return (instructions)

Form IL-1120-ST - 2010 S Corporation Income and Replacement Tax Return (instructions)

2010 Schedule K-1-P - S Corporations must file this with IL-1120-ST
Other Tax Forms - Corporate Tax Forms 1997-2010

 

Due Date:

 

Form IL-1120 (or 1120-ST) is due on or before the 15th day of the 3rd month following the close of the tax year, March 15th for calendar year filings. If the original due date of your federal return is later than the 15th day of the 3rd month, your Illinois due date will be the same as your federal due date.

 

Limited Liability Company

 

Annual Filing Requirements

  

Annual Reports

Fee:

The Annual Report filing fee is $250.

 

Forms:

Domestic LLC Annual Report - Annual Report

E-File Annual Report - Annual Report E-Filing Directions

 

Due Date:

An annual report form must be filed each year within 60 days immediately preceding the first day of the anniversary month of organization.

 

LLC Tax Returns

Tax:

If you file as a corporation for federal tax purposes, you are treated as a corporation in Illinois and file IL-1120. The income tax rate is 4.8% of the company's net income. In addition, Illinois assesses a personal property replacement tax based on net income (2.5% for corporations, 1.5% for S corporations and all other incorporated entities) on all businesses. If you file as a Partnership, you will need to use form IL-1065.

 

Forms:

Form IL-1120 - 2010 Corporation Income and Replacement Tax Return (instructions)

Form IL-1065 - 2010 Partnership Replacement Tax Return (instructions)
Other Tax Forms - Business Tax Forms 1997-2010

 

Due Date:

Using Form IL-1120, taxes are due on or before the 15th day of the 3rd month following the close of the tax year, March 15th for calendar year filings.

 

Using Form IL-1065, taxes are due on or before the 15th day of the 4th month following the close of the tax year, April 15th for calendar year filings.