Illinois LLC at a glance
| Formation document | Articles of Organization (Form LLC-5.5) |
| Filing office | Illinois Secretary of State, Department of Business Services |
| State filing fee | $150 |
| Name reservation (optional) | $25 |
| Annual report | $75; due within the 60 days before the first day of the LLC's anniversary month, every year. Illinois calls it the LLC Annual Report (Form LLC-50.1). A series LLC pays $50 more per series, and late reports carry a penalty. |
| Also know | Annual report is $75 and is due in the 60 days before the first day of the anniversary month. A payment processor fee is added to online card payments. An LLC that can establish series pays $400 to form and $50 per series on the annual report. |
| State tax registration | Register with the Illinois Department of Revenue (Form REG-1 / MyTax Illinois) before making any purchases or sales or hiring an employee. No fixed day count is published |
| Registered agent | Required: an individual who lives in Illinois or an entity authorized to transact business in Illinois; the registered office must be in Illinois with a street or rural route address (a PO box alone is not acceptable) |
| Processing time | The 24-hour service total is $250. |
Your total with MFA
| Package | MFA fee | State fee | Due at formation |
|---|---|---|---|
| Formation | $150 | $150 | $300 |
| Formation + Business Setup | $249 | $150 | $399 |
| Complete Launch | $649 | $150 | $799 |
MFA fees are one-time and never renew. See what each package includes, or add monthly bookkeeping from $199/month.
Sources
- ilga.gov/Documents/legislation/ilcs/documents/080501800K50-1.htm
- tax.illinois.gov/businesses/registration.html
- www.ilsos.gov/departments/business-services.html
- www.ilsos.gov/departments/business-services/organization/llc-instructions.html
- www.ilsos.gov/publications/business-services/llc.html
Facts checked against the official sources above as of October 20, 2026. State fees change; we confirm the current fee before invoicing. MFA is not a law firm and does not provide legal advice. We prepare and file formation documents based on the information you provide. Educational information, not tax or legal advice.