IL · Incorporation
Form an LLC or corporation in Illinois.
Illinois's modern accounting partner for formation, registered agent, and the books that come next.
At a glance
Illinois formation snapshot
- LLC filing fee
- $150
- Corp filing fee
- $150
- Annual / franchise
- $75 annual report
- Annual report due
- Anniversary month
- State income tax
- 4.95% personal; 9.5% corporate
- Typical processing
- 2–4 weeks
Fees and timelines can change. We confirm current amounts before we file.
Why this state
Why form in Illinois
Illinois supports standard LLC and corporation filings through its Secretary of State (or equivalent). Typical processing is about 2–4 weeks.
State income tax posture here: 4.95% personal; 9.5% corporate. Confirm whether franchise, gross receipts, or other business taxes also apply to your entity.
If you operate, hire, or keep inventory outside Illinois, plan foreign qualification and multi-state tax registration early.
Process
Step-by-step formation in Illinois
- 1Name reservation (when required)
- 2Articles of Organization or Incorporation filing
- 3Registered agent designation
- 4EIN application
- 5Operating agreement or bylaws
- 6BOI / FinCEN filing when required
- 7State and local business licenses
- 8First-year compliance calendar
Compliance
Ongoing compliance in Illinois
- Track the annual report or franchise cycle for Illinois. Typical timing: Anniversary month. Typical fee context: $75 annual report.
- Keep a registered agent with a physical street address in Illinois at all times.
- Add state tax accounts and local licenses based on your activity, not only the SOS filing.
State-specific notes
- Fees, due dates, and portals in Illinois change. We confirm current amounts before we file.
- Home-state formation does not remove sales tax, payroll, or income tax duties in other states where you have nexus.
Tax snapshot
Illinois tax at a glance
4.95% personal; 9.5% corporate
FAQ
Illinois formation questions
Ready to form in Illinois?
Tell us your entity type and timeline. We confirm live fees, file, and set your first-year compliance calendar.