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Illinois . Forms directory

Illinois Secretary of State forms: every filing you might need.

A complete directory of Illinois Secretary of State business filings. Each form below covers the fee, who files it, and a link to handle it through File.Business.

FormDescriptionState feeAction
Articles of Organization (LLC formation)Form an LLC in Illinois.$150File →
Articles of Incorporation (Corp formation)Form a Corporation in Illinois.$150 + franchise taxFile →
Annual Report / Statement of InformationRequired annual filing.$75 LLCFile →
Application for Authority (Foreign Qualification)Register an out-of-state entity to do business in Illinois.$150File →
Statement of Change of Registered AgentChange your Illinois registered agent.$25File →
Articles of AmendmentAmend your entity's formation documents.VariesFile →
Articles of DissolutionVoluntarily dissolve your entity.$5File →
ReinstatementReinstate an administratively dissolved entity.VariesFile →
Certificate of Good Standing / ExistenceProof of compliance for banks and lenders.$25File →
Application for Reservation of NameHold a business name before formation.VariesFile →
FAQ

Frequently asked questions

Where do I find Illinois SOS forms?
Most forms can be filed online through IL Corporation/LLC Search or through File.Business.
How much does it cost to file forms with the Illinois SOS?
Fees vary. LLC formation: $150, Annual Report: $75, Cert of Good Standing: $25.
Can I file all Illinois forms online?
Most can be filed online. Some specialty filings still require paper.
Does File.Business handle all Illinois forms?
Yes. Every form listed above can be filed through File.Business.
What is the difference between the Illinois Secretary of State and the Department of Revenue?
SOS handles corporate filings. Department of Revenue handles tax registrations and franchise tax.
How long do Illinois filings take to process?
Standard turnaround varies by filing type and channel.
Can I track my Illinois filing through File.Business?
Yes. Every filing tracks in your Vault with state confirmation.

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Five minutes per filing. State fee passed through at cost. Audit trail and deadline tracking included.

File any Illinois form See state overview

Disclosure. File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with the Illinois Secretary of State or any Secretary of State office. You may file directly with the Illinois Secretary of State. Information on this page is for general guidance only and is not legal, tax, or accounting advice. Fees and deadlines verified against the Illinois Secretary of State as of June 2026 and may change. For entity-specific guidance, consult a licensed Illinois attorney or CPA.

All Illinois filings →
File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with any Secretary of State office. You may file directly with the appropriate state agency. SOC 2 Type II audited. 220,000+ businesses formed since 2017.