LLC by state
The Illinois state filing fee is $150. FilingFox forms your Illinois LLC end-to-end — name check, state filing, registered agent and documents — from $535 all-in.
Start my Illinois LLC →Learn how to start an LLC in Illinois in 2025 with our step-by-step guide. Discover costs, filing tips, registered agent options, …
GuideLearn how to create a free Illinois LLC Operating Agreement with customizable templates, management options, and legal tips—essent…
GuideLearn everything about Illinois LLC taxes including filing requirements, state taxes, sales tax, payroll taxes, S-Corp election, a…
GuideLearn Illinois LLC business license requirements, permits, and costs. Discover how to register for state, local, and industry-spec…
GuideDiscover how to perform an Illinois business name search in 2025, check LLC name availability, meet state rules, and avoid name co…
GuideLearn how to file your Illinois LLC Annual Report online, understand deadlines, fees, penalties, and avoid costly late filing pena…
GuideDiscover the true LLC cost in Illinois for 2025, including formation fees, ongoing costs, and savings tips. Learn everything about…
GuideLearn how to file Illinois LLC Articles of Organization online or by mail. Discover filing fees, processing times, Registered Agen…
GuideDiscover how to choose and hire the best Illinois Registered Agent for LLC formation, legal document service, costs, and complianc…
GuideLearn how to get a free Illinois EIN number for your LLC—step-by-step guide to IRS EIN application, requirements for Illinois LLC,…
GuideLearn how to change your LLC name in Illinois with our step-by-step guide. File Articles of Amendment, update IRS and business lic…
GuideLearn how to be your own Registered Agent in Illinois, meet state’s requirements, and discover pros and cons to protect your LLC a…
GuideLearn how to form a General Partnership in Illinois. Discover formation steps, requirements, advantages, disadvantages, and essent…
GuideLearn how to start a General Partnership in Illinois, including forming, tax requirements, advantages, and business structure opti…
GuideLearn how to form a General Partnership in Illinois with our comprehensive guide. Discover formation steps, legal requirements, pa…
GuideLearn how to start a sole proprietorship in Illinois with our step-by-step guide. Discover DBA registration, EIN needs, licensing,…
GuideLearn how to start a sole proprietorship in Illinois, its advantages, disadvantages, and step-by-step guide on DBA registration, E…
State filing, registered agent and documents from $535 — most orders submitted to the state within one business day.
Start my Illinois LLC →