Illinois Secretary Of State Office

We provide information for the Illinois SOS office below. If you need assistance, then use the information listed on this page to contact the Illinois Secretary of State Office. If you are looking to start a business and want to see if the business name is available, then view how to use the Illinois business entity and corporation search page.

Entity Formation Fees For Illinois

Below we list the fees to file articles of organization to form a business entity in Illinois.

LLC Business Corporation Nonprofit
$150 + optional $100 expedite fee. The expedite fee is required if you file online. $150 filing fee + franchise tax ($25 minimum) + optional $100 expedite fee. The expedite fee is required if you file online. Franchise tax is calculated as $1.50 per $1,000 on the paid-in capital represented in this state. So if you paid-in less than $16,666, then your franchise tax due is the minimum amount of $25. $50 by mail or $75 online

Illinois State Licensing Agencies

Below is a listing of the state-level licensing agencies within Illinois that a business should check for business license requirements.

Licensing Agency Contact Information
Attorney General - Charitable Trust Bureau Phone: 312-814-2595

Web: Home Name search
Board of Examiners Physical address:
1120 E. Diehl Road, Suite 107
Naperville, IL 60563

Phone: 815-753-8900
Fax: 815-753-8953

Web: Home Name search Forms File online
Email: help@ilboe.org
Commerce Commission Physical address:
527 E Capitol Ave
Springfield, IL 62701

Phone: (217) 782-5793

Web: Home
Department of Employment Security Physical address:
4519 W Main St.
Belleville, IL 62226

Phone: (800) 244-5631

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Department of Financial and Professional Regulation Physical address:
320 W. Washington Street, Third Floor
Springfield, IL 62786

Phone: 1 (888) 473-4858

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Email: fpr.prfgroup02@illinois.gov
Department of Financial and Professional Regulation - Division of Real Estate Phone: (800) 560-6420

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Department of Financial And Professional Regulation (IDFPR) - Public Accountancy Section Physical address:
320 W. Washington Street, 3rd Floor
Springfield, IL 62786

Phone: 800-560-6420
Fax: 217-782-7645

Web: Home Name search File online
Email: fpr.prfgroup01@illinois.gov
Department of Financial and Professional Regulation, Division of Professional Regulation _ State Board of Pharmacy Physical address:
320 W Washington, 3rd Floor
Springfield, IL 62786

Phone: 800-560-6420
Fax: 217-782-7645

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Department of Labor Physical address:
900 South Spring Street
Springfield, IL 62704

Phone: 217-782-6206
Fax: 217-782-0596

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Department of Revenue Physical address:
100 West Randolph Street
Chicago, IL 60601-3274

Phone: 800-732-8866 or 217-782-3336

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Landscape Architect Registration Board Web: Home
Liquor Control Commission Physical address:
100 W. Randolph St, 7-801
Chicago, IL 60601

Phone: 312.814.2206
Fax: 312.814.2241

Web: Home Forms
Email: ILCC@illinois.gov
Secretary of State - Business Services Department Phone: 217-782-6961

Web: Home Name search Forms File online
  • SOS Office Location

    Office of the Illinois Secretary of State
    501 S. Second St. Room 350
    Springfield, IL 62756

  • SOS Office Phone Number

    The Illinois SOS office phone number is 217-782-6961.

  • SOS State Website

    To view the Illinois SOS website, please click here.

Map of Office of the Illinois Secretary of State