To start an Illinois LLC, choose its name and registered agent, file Articles of Organization, and complete the tax, banking and licensing steps your business needs. Filing creates the company; it does not automatically authorize regulated work or settle the owners’ agreement.
This checklist follows the launch sequence for an ordinary Illinois domestic LLC. Professional practices, series LLCs and companies formed elsewhere require separate review. Still choosing the structure? Read our LLC-versus-S-corp comparison.
1. Confirm the name, ownership and signing authority
Check name availability with the Illinois Secretary of State before ordering signs. State availability does not establish trademark rights or guarantee a matching website address.
Write down the owners, contributions and management arrangement. Who can borrow, sign leases or hire employees? If one person contributes money and another performs the work, resolve expectations before filing.
Use our operating-agreement guide for those ownership decisions. This launch checklist addresses the sequence, rather than repeating the agreement’s terms.
2. Select the registered agent and file the articles
The registered agent receives legal papers and official notices. Choose someone who meets Illinois requirements and can reliably receive and forward documents. Review public-record information before using a home address.
Prepare the current Articles of Organization and confirm names, addresses, purpose, effective date and requested management information. The Illinois Secretary of State’s LLC guide lists a standard $150 filing fee and a $75 annual-report fee. Verify current fees when filing; optional services and other filings add costs.
If privacy matters, read our Illinois LLC privacy article before submitting personal information to a public record.
3. Save acceptance and complete company records
Keep the accepted articles and receipt. Complete the operating agreement and document contributions and authority. A single-owner company also needs records identifying its assets and obligations.
Formation does not automatically transfer a sole proprietorship’s contracts, equipment or real estate. Make a list and determine which assignments, consents or deeds are needed.
Example: An owner forms an LLC but leaves the commercial lease in an individual name. Filing does not release that individual from the lease. Review the contract and address any landlord consent.
4. Arrange tax identification, banking and bookkeeping
Determine whether the company needs an employer identification number and obtain it through the appropriate IRS process. Confirm federal classification and any election with your tax adviser.
The IRS LLC guidance explains the default federal classifications. Do not select an S election merely because a filing service offers it as an upgrade.
Bring accepted documents, tax-identification information and bank-requested ownership records to open the company account. Record contributions and establish bookkeeping for income, expenses and owner payments. Keep household spending separate. See common LLC mistakes for ongoing pitfalls.
5. Check registrations, licenses and insurance
Requirements depend on activities, location and employees. Review applicable tax registration, local permits, professional licensing, zoning and employment obligations.
Use the Illinois Department of Revenue’s registration guidance as the tax-registration starting point. State formation acceptance does not replace a license.
Discuss insurance before work begins. An LLC does not replace appropriate coverage or erase personal guarantees.
6. Calendar the annual report and renewals
Record filing and license-renewal deadlines and who is responsible. Illinois generally requires the annual report before the first day of the company’s anniversary month; verify the deadline against the state’s instructions and your effective date.
Keep agent information current. Review documents when adding owners, changing management, borrowing or expanding into another state.
Documents to gather before launch
- Accepted articles and filing receipt.
- Signed operating agreement and contribution records.
- Applicable tax-identification and registration records.
- Banking and bookkeeping setup.
- Required licenses, permits and insurance.
- Contract and asset-transfer records.
- Filing and renewal calendar.
Common launch questions
Can I file myself?
Yes. Legal help is useful when ownership, regulated activities, contracts or transfers require decisions beyond the filing form.
Can I use a Missouri LLC for an Illinois business?
Possibly, but Illinois operations may require foreign-LLC admission and other compliance. Compare total obligations rather than only the formation fee.
Does filing mean I can open immediately?
Confirm effectiveness and all required licenses, registrations, contracts and coverage. Filing acceptance alone does not settle readiness.
Make the launch fit your business
Schedule a business-formation consultation to review the filing, ownership and launch steps together. Our business-formation services serve Illinois and Missouri owners, with virtual appointments available.