Choose a unique LLC name that complies with Illinois naming rules
Check name availability on the Illinois Secretary of State website
Appoint a registered agent with a physical Illinois address
File Articles of Organization with the Illinois Secretary of State
Pay the required filing fee
Create an operating agreement
Obtain an EIN from the IRS if needed
Register for Illinois state taxes if required
Obtain any required local or industry-specific licenses and permits
File the Illinois Annual Report each year
Maintain compliance with state and local requirements