This guide is general information, not legal or tax advice, and reading it does not create an attorney-client relationship. It reports what each state publishes about filing deadlines, fees, and the consequences of missing them, with the sources this page cites. It cannot tell you what your own company owes: the date turns on when and where you formed, states change these rules between our reviews, and in several states an entity-level tax falls due in a year when no report does. Confirm your own dates with the filing office named on this page before you rely on one here, because the penalty for missing a deadline can be administrative dissolution of the company.
Frequently Asked Questions
Your Illinois LLC annual report is due before the first day of your LLC's anniversary month, the month in which the Secretary of State accepted your Articles of Organization. An LLC formed in March 2023 should have its next report on file before March 1, 2024. The report is Form LLC-50.1 and the fee is $75, with a series LLC paying $75 plus $50 for each series. Illinois does not penalize you the moment that day passes: under 805 ILCS 180/50-15(b)(1) a $100 penalty attaches once you have failed to file before the first day of the second month after the anniversary month, and another $100 is added for each year or fraction of a year from the second year of delinquency on. An LLC left delinquent can be administratively dissolved, and reinstatement then costs $200. File through the Business Services section of ilsos.gov and set a calendar reminder for the month before your anniversary month so the report is in on time.
Before filing, gather your LLC's current registered agent name and Illinois street address, principal business address, and complete member or manager information. You will also need your Illinois file number and formation date. The form is Form LLC-50.1, the official Illinois annual report, available from the Business Services section of ilsos.gov; note that the old cyberdriveillinois.com address has been retired. Have your federal Employer Identification Number handy if your LLC has one, and review your operating agreement to confirm current member percentages and titles. The report is due before the first day of your LLC's anniversary month under 805 ILCS 180/50-15(a) and the fee is $75, so organizing these details ahead of time prevents a rushed filing that gets rejected close to the deadline.
Illinois sets the consequence by statute rather than case by case. Under 805 ILCS 180/50-15(b)(1) a $100 penalty attaches once the annual report has not been filed before the first day of the second month after your anniversary month, and another $100 is added for each year or fraction of a year beginning with the second year of delinquency. So a report two years late carries $200 in penalties on top of $150 in unpaid report fees. Delinquency also takes your LLC out of good standing, which can hold up bank, licensing, and contract paperwork that asks for a certificate of good standing, and an LLC that stays delinquent can be administratively dissolved by the Secretary of State. 805 ILCS 180/35-30(b) gives 120 days from the date of the notice of delinquency, after which the Secretary of State shall dissolve the company. Reinstating an administratively dissolved Illinois LLC costs $200 under 805 ILCS 180/50-10, plus the back report fees and penalties, so filing the overdue Form LLC-50.1 immediately through ilsos.gov is far cheaper than waiting.
Yes. Every Illinois LLC must maintain a registered agent with a physical street address in Illinois who can receive legal documents and official correspondence during business hours. You can serve as your own registered agent if you have an Illinois street address, since PO boxes do not qualify, or you can hire a commercial registered agent service for an annual fee.
This matters because the Illinois Secretary of State and opposing parties use the registered agent's address to deliver lawsuit papers, tax notices, and compliance mail. Missing service of process can lead to a default judgment against your LLC without your knowing a case was filed. If your agent resigns, moves, or you relocate out of state, file a statement of change with the Secretary of State promptly so the record stays accurate.
Start by confirming the registered agent on file through the business entity search in the Business Services section of ilsos.gov, and update it in the same place if the details are out of date.
Sources
Each entry below is a document recorded in our verified Illinois sources, and each entry says what the document is. Some statutory text is read from an accurate mirror rather than from the state's own host, and those say so.
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Edmond Hui is a software engineer and serial entrepreneur based in New York who has founded multiple online businesses across e-commerce, media, and information publishing. Before transitioning into tech, he spent years as a commercial real estate professional closing deals totaling over 100,000 square feet, giving him firsthand experience with business formation and entity structuring. He built MyStateLLC to provide the free, state-specific LLC guidance he wished existed when forming his own companies.
