Illinois LLC Fees & Requirements

Articles of Organization (LLC 5.5) $150; series LLC $400

$75 (+$50 per series); $100 late penalty

Before first day of anniversary month (within 60 days before)

Must continuously maintain an IL registered agent (IL resident or entity authorized in IL) and registered office (805 ILCS 180/1-35)

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Personal Property Replacement Tax: 1.5% of net Illinois income for partnership- or S-corp-taxed LLCs (2.5% if taxed as C corp); not a flat fee