Take Your Business Further by Incorporating in Illinois
Illinois is a central hub for commerce and innovation making it a strategic choice for forming a C-Corp. With One IBC USA, you’ll navigate incorporation efficiently and build on a strong legal foundation. Start at $199, plus state filing fees.
Get Your Business Started Today. Select Your Package
Basic
$199
Fees for filing legal documents to register or maintain a business.
02 weeks processing
Agent fee
Registered Address
Document filing with the Secretary of State
Standard
$499
Fees for filing legal documents to register or maintain a business.
05 days processing
Includes everything in basic package
Comprehensive name check
Preparation of Articles of Incorporation
Lifetime customer support (phone & email)
Federal Tax ID (EIN) Obtainment Service
Premium
$599
Fees for filing legal documents to register or maintain a business.
01 day processing
Includes everything in standard package
2 hours of free tax consultation
One IBC USA: Trusted Support for Illinois C-Corp Formation

Local Know-How
We handle Illinois-specific filings, deadlines, and legal formalities.

Ongoing Guidance
Get support even after your C-Corp is formed.

Flexible Service Plans
Choose incorporation options that suit your business size and scope.
How Illinois C-Corps Operate Under State Law?
C Corporations in Illinois function as independent legal entities, shielding owners from personal liability. Incorporation requires filing Articles of Incorporation with the Secretary of State. C-Corps are ideal for companies that plan to raise capital through equity and scale with multiple shareholders.
Incorporation Benefits That Make Illinois Stand Out
Central Location
Illinois gives companies access to key transportation, logistics, and commerce corridors.
Digital Filing Tools
Online incorporation and annual reporting simplify compliance.
Supportive Legal Framework
Business regulations are transparent and well-structured.

Why it matters
C-Corps offer limited liability, access to institutional investors, and operational continuity.
What’s required
You’ll need to file Articles of Incorporation, appoint an in-state registered agent, and submit an annual report.
Compare entities
C-Corps can have unlimited shareholders and stock classes. S-Corps must stay within tighter limits but offer pass-through taxation for qualified companies.
Pick the Right Fit: Illinois S-Corp or C-Corp
S-Corp Snapshot
No corporate-level tax
U.S. citizens/residents only
One stock class allowed
C-Corp Snapshot
Entity pays its own taxes
No limit on ownership or nationality
Multiple stock classes permitted
Ready To Start Your Corporation
Get StartedGetting Started with Your Illinois C-Corp Formation
Name Your Business
Choose a name that meets Illinois naming rules and isn’t already in use.
Assign a Registered Agent
You must appoint an agent located in Illinois to accept legal notices.
File Your Articles of Incorporation
Submit formation paperwork through the Secretary of State’s office to formalize your C-Corp.
Frequently Asked Questions
Yes. Illinois imposes no residency or citizenship requirements for shareholders or directors of a C Corporation. A registered agent with a physical street address in Illinois must be appointed to receive legal and regulatory correspondence. This allows foreign-controlled or out-of-state entities to incorporate in Illinois without maintaining a physical office in the state.
Yes. Illinois law requires every corporation to appoint a registered agent with a physical street address located within the state. This address serves as the official location for receiving service of process and government communications. A separate business office is not required, and most companies meet this obligation through a commercial registered agent service.
C Corporations incorporated in Illinois are subject to double taxation, under which business income is taxed at the corporate level and again upon distribution to shareholders. This tax structure is aligned with federal corporate tax regulations and applies uniformly to C Corporations operating in the state.
Ready to Start Your Corporation?
Get Started
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