Basic Formation
$149
plus Illinois Secretary of State filing fee ($150 LLC / $175 corporation), shipping and applicable tax
Start my Illinois businessCorp USA is not a law firm and does not provide legal advice.
Corp USA Illinois · The Prairie State
Corp USA Illinois
LLC $299 · Series LLC $599 · Corporation $324
Annual Report $174 · Registered Agent $199/year
Corp USA is not a law firm and does not provide legal advice.
Choose your path
Illinois 805 ILCS 180 & 805 ILCS 5 statutory referencesState fees passed through at $0 markupA Corp USA company (corpusa.net)
- Illinois 805 ILCS 180 & 805 ILCS 5 statutory references
- $0 Markup on State Pass-Through Fees
- Physical Corporate Kits & Seals (corpusa.net)
- Live Filing Support: (386) 465-3937
Illinois formation & compliance
Illinois LLC — $299
Basic $299 / Deluxe $449 with Custom Illinois LLC Kit & Embossing Seal / Complete $499. Zero newspaper publication required. Form LLC-5.5: $150 state + $149 Basic.
Official source: Illinois Secretary of State — Department of Business ServicesIllinois Series LLC — $599
$599 umbrella + $50 per Certificate of Designation. Under 805 ILCS 180/37-40(b), vertical and horizontal liability segregation requires separate records, assets and statutory notice. Suitable for real estate and multi-location operations.
Official source: Illinois General Assembly — 805 ILCSIllinois Corporation — $324
$150 filing + $25 minimum initial franchise tax; Basic $324 / Deluxe $474 / Complete $524 with Illinois Corporate Kit, Stock Certificates & Seal. $1,000,000 franchise-tax liability exemption under 805 ILCS 5/15.35.
Official source: Illinois Secretary of State — Department of Business ServicesIllinois Annual Report — $174
Illinois Annual Reports (Form LLC-50.1 under 805 ILCS 180/50-1; Form BCA 14.05 under 805 ILCS 5/14.05) are due before the first day of the anniversary month: the last day of the previous month. The window opens 60 days before that first day. $75 state + $99 service = $174; nonprofits use Form NFP 114.05 ($10 + $99 = $109). Series LLCs add $50 per active registered series. LLCs incur a $100 late penalty after 60 days; 180 days without filing triggers an administrative-dissolution warning. Reinstatement uses Form LLC-35.40 or BCA 12.45: $200 state + $299 service plus back reports and penalties.
Official source: Illinois Secretary of State — Department of Business ServicesRegistered Agent — $199/year
$199/year. Physical Illinois registered office and service-of-process handling.
Official source: Illinois General Assembly — 805 ILCSFormation packages
Deluxe Formation
$299
plus Illinois Secretary of State filing fee ($150 LLC / $175 corporation), shipping and applicable tax
Start my Illinois businessCorp USA is not a law firm and does not provide legal advice.
Complete Formation
$349
plus Illinois Secretary of State filing fee ($150 LLC / $175 corporation), shipping and applicable tax
Start my Illinois businessCorp USA is not a law firm and does not provide legal advice.
Illinois fees & franchise tax
Illinois Anniversary-Month Annual Report & Penalties
Report due (previous month end)
September 30, 2026
60-day window opens
August 2, 2026
On-time state + $99 service
$174
LLC late penalty
$0
IL Form LLC-50.1 (LLC Annual Report) · Due before October 1, 2026. $100 late-penalty threshold: November 29, 2026. 180-day administrative-dissolution warning: March 29, 2027.
28 days overdue.
Form LLC-35.40: $200 reinstatement + $75 × 1 back report(s) + $0 modeled penalty + $299 service = $574. Additional assessed penalties may apply; this estimate does not establish actual dissolution status.
805 ILCS 180/50-1, 50-15, 35-25; 805 ILCS 5/14.05, 12.35; 805 ILCS 105/114.05. Reports follow the anniversary month, not a statewide calendar deadline.
Illinois Startup, Series LLC & 24-Hour Filing Costs
State formation fee
$150
Designations / IDFPR / expedited
$0
Corp USA service
$149
Startup total
$299
Year 2 report forecast: $75 state + $99 service = $174. Corporation franchise tax is $0 when liability does not exceed the $1,000,000 exemption. Series LLC $599 is the umbrella price before designations.
805 ILCS 180/37-40, 50-10; 805 ILCS 5/15.35. No newspaper publication for LLC formation. Shipping and applicable tax are separate.
Start Illinois filing — $299Illinois Entity Tax & 1.5% PPRT
IL individual income tax (4.95%)
$7,425
Personal Property Replacement Tax
$0
Combined Illinois estimate
$7,425
Illustrative federal SE tax (15.3%)
$22,950
35 ILCS 5/201(p). Simplified estimates, not tax advice: federal SE/FICA caps, deductions, apportionment, shareholder basis and SALT eligibility are not modeled. PTE savings assume the full elected payment yields an additional federal deduction; actual benefit may be lower or zero. Salary must be reasonable.
Choose your Illinois filing
Form an Illinois LLC (Form LLC-5.5)Form an Illinois Business Corporation (Form BCA 2.10)Illinois S-Corporation Election & PPRT SetupIllinois Professional LLC (PLLC) / Professional Service Corp (PC)Illinois General Not For Profit CorporationIllinois Registered Agent & Registered Office ServiceIllinois Anniversary-Month Annual ReportIllinois Entity Taxes & $1,000,000 Franchise Tax ExemptionFederal IRS EIN Tax ID + MyTax Illinois GuideIllinois Assumed Name / DBA RegistrationIllinois Foreign QualificationIllinois Certificate of Good StandingIllinois Articles of AmendmentIllinois Statement of Termination / Articles of DissolutionIllinois Series LLC FormationIllinois Venture 10M-Share Startup C-Corporation
Illinois statutory guides
Illinois LLC Articles of Organization — Form LLC-5.5Illinois Series LLC — Forms LLC-5.5(S) & LLC-37.40Illinois Annual Report — Anniversary-Month DeadlinesIllinois LLC Total First-Year Cost — $299 BasicIllinois 1.5% Personal Property Replacement TaxIllinois $1,000,000 Franchise Tax ExemptionIllinois Assumed Names vs. County Clerk PublicationIllinois PLLC / Professional Service Corporation & IDFPRIllinois Registered Agent — 805 ILCS 180/1-35Chicago BACP Limited Business License & Cook County LLCMyTax Illinois REG-1 — Sales & Withholding RegistrationIllinois S-Corp Election — Form 2553 & IL-1120-STIllinois Foreign Qualification — LLC-45.5 & BCA 13.15Illinois Administrative Dissolution & LLC-35.40 ReinstatementIllinois Name Availability & LLC-1.15 ReservationIllinois LLC & C-Corp for Non-US Founders — ITIN & Form 5472
Illinois cities, counties & out-of-state founders
Cook CountyDuPage CountyLake CountyWill CountyKane CountyMcHenry CountyWinnebago CountyMadison CountySt. Clair CountyChampaign CountySangamon CountyPeoria CountyMcLean CountyRock Island CountyTazewell CountyChicagoAuroraNapervilleJolietRockfordSpringfieldElginPeoriaChampaignWaukeganCiceroBloomingtonEvanstonSchaumburgBolingbrook
Frequently asked questions
Illinois LLC $299 ($150 state + $149 Basic), Series LLC $599 umbrella plus $50 per series, Corporation $324 ($175 state + $149 Basic), Annual Report $174, Registered Agent $199/year. State fees pass through at $0 markup.
Official source: Illinois Secretary of State — Department of Business ServicesNo. Check municipal licenses, MyTax Illinois registration and professional approvals before operating.
Official source: Illinois state agencyYour next chapter. In Illinois.
Start Illinois LLC ($299)
Corp USA is not a law firm and does not provide legal advice.