LLC · Illinois · 2026
What an LLC really costs in Illinois
Every state fee and deadline for an LLC in Illinois, from the official state source.
To form
$150
Articles of Organization (Form LLC-5.5)
First year with the state
~$225
Filing + one round of required reports and minimum taxes
With Incorra
$150
Free filing, state fee at cost. Or $399 with Plus (agent + reports, $249/yr).
Every recurring requirement
- Illinois LLC annual reportEvery year in the month you formed. Form LLC-50.1, $75; due before the first day of the formation-anniversary month; $100 late penalty after 60 days.$75
Questions
How much does it cost to form an LLC in Illinois?
Illinois charges $150 to file the Articles of Organization (Form LLC-5.5).
What does an LLC cost every year in Illinois?
Illinois LLC annual report: $75, every year in the month you formed (Form LLC-50.1, $75; due before the first day of the formation-anniversary month; $100 late penalty after 60 days.).
What if my LLC was formed in another state?
To do business in Illinois you register as a foreign entity: Application for Admission to Transact Business (Form LLC-45.5), $150.
Not sure an LLC is right?
Describe your business and Incorra compares LLC, S-corp and C-corp with your numbers, including the tax when you sell, then files it in Illinois.
Plan my company freeSource: https://www.ilsos.gov/departments/business-services/fees.html · not yet independently verified; confirm on the state site. State fees change; Incorra re-checks them regularly. General information, not legal or tax advice.