Skip to content
The Founders Review

Rankings of registered agents, LLC formation and foreign registration services in all 50 states.

Review · Illinois

Illinois Registered Agent.co Review (2026)

Illinois Registered Agent.co pricing: $99 a year for its Illinois registered agent plan and the same $99 at renewal. You get an in-state registered office address and online copies of served legal documents. Illinois LLC formation is $199 over the state fee, first agent year included. Registering an existing company in Illinois: $199 plus state fees. It suits a company based only in Illinois that is happy to file its own Limited Liability Company Annual Report.

Written by The Founders Review editorial team

Our verdict

Illinois Registered Agent.co

Illinois Registered Agent.co: best for an Illinois-only company

$99 per year, flat
Our mark8.8out of 10

Worth it for a one-state company that files its own reports.

What you get

  • Illinois street address for your registered office
  • Served legal papers scanned to your online account

Why pick it

  • Flat $99 a year
  • Lowest agent price we rank in Illinois
  • LLC formation and foreign registration from the same company
  • First agent year free with formation

Less good

  • You file the Limited Liability Company Annual Report
  • $99 extra for the EIN application
  • No coverage outside Illinois
Visit Illinois Registered Agent.coPartner link. We may earn money if you buy.

What the $99 plan includes

For $99 a year Illinois Registered Agent.co serves as your Illinois registered agent: you get an in-state street address for the registered office, and legal documents served on the company are scanned and sent to you online. Renewal is the same $99.

Forming an Illinois LLC with Illinois Registered Agent.co

Illinois Registered Agent.co prepares and files the Articles of Organization (Form LLC-5.5) for $199 plus Illinois's $150 filing fee. The first year of registered agent service is included, then the agent is $99 a year. An EIN application is a $99 add-on; the IRS issues EINs for free.

After formation, Illinois expects the Limited Liability Company Annual Report every year, due before the first day of the entity's anniversary month, with a $75 state fee. Filing it is not part of Illinois Registered Agent.co's published prices.

Illinois Registered Agent.co foreign registration

For a company formed elsewhere, Illinois Registered Agent.co files the Application for Admission to Transact Business (Form LLC-45.5) with the Illinois Secretary of State, Department of Business Services, Limited Liability Division for $199 plus the state's $150 fee. A year of registered agent service comes with it. You supply certificate of Good Standing or Existence dated within 60 days.

How it compares on our Illinois pages

Mainstay Filing's agent costs $447 over three years; Illinois Registered Agent.co costs $297. Mainstay works nationwide and scans the first three government mailings a year free. For a new LLC, Mainstay Filing charges $199 a year and files your annual report, while Illinois Registered Agent.co costs $397 over three years with the agent but no report filing. IL Registered Agent.org, the other Illinois agent on our list, publishes the same yearly price of $99, and the two sit close together on our Illinois pages.

What people ask about Illinois Registered Agent.co

How much does Illinois Registered Agent.co cost?

$99 a year for its registered agent service, and the same at renewal. LLC formation is $199 plus the Illinois filing fee.

Does Illinois Registered Agent.co file my annual report?

No. Filing the Illinois Limited Liability Company Annual Report is not part of its published prices.

Is Illinois Registered Agent.co a good registered agent for an Illinois LLC?

Yes, for an Illinois-only company that wants a low, flat price. Its average score across our Illinois pages is 8.8.

What does Illinois Registered Agent.co include?

A Illinois registered office address plus scans of served documents.

Can Illinois Registered Agent.co register my out-of-state company in Illinois?

Yes. It files the registration for $199 plus Illinois's fee, with a year of agent service included.

See also

Sources we used

  1. Illinois registered agent statute, confirmed October 2026: www.ilga.gov/legislation/ilcs/fulltext.asp?DocName=080501800K1-35
  2. Illinois Secretary of State, Department of Business Services, Limited Liability Division, confirmed August 2026: www.ilsos.gov/departments/business-services/annual-reports/llc-instruc
  3. Illinois Secretary of State, Department of Business Services, Limited Liability Division, confirmed August 2026: www.ilsos.gov/departments/business-services/annual-reports.html
  4. 805 ILCS 180/5-5, confirmed August 2026: www.ilga.gov/legislation/ilcs/fulltext.asp?DocName=080501800K5-5
  5. Illinois formation fee: Filing fee, official source, confirmed October 2026: www.ilga.gov/legislation/ilcs/fulltext.asp?DocName=080501800K50-10
  6. Illinois formation fee: Filing fee, official source, confirmed October 2026: www.ilsos.gov/publications/business-services/llc.html
  7. Form LLC-45.5, Application for Admission, confirmed October 2026: www.ilsos.gov/content/dam/publications/pdf_publications/llc455.pdf
  8. Form LLC-45.40, Application for Withdrawal, confirmed October 2026: www.ilsos.gov/content/dam/publications/pdf_publications/llc4540.pdf
  9. 805 ILCS 180/45-45, consequences of transacting business without admission, confirmed October 2026: www.ilga.gov/legislation/ilcs/fulltext.asp?DocName=080501800K45-45
  10. 805 ILCS 180/45-47, activities that are not transacting business, confirmed October 2026: www.ilga.gov/legislation/ilcs/fulltext.asp?DocName=080501800K45-47
  11. 805 ILCS 180/45-45, confirmed November 2026: ilga.gov/legislation/ilcs/documents/080501800K45-45.htm
  12. Illinois Registered Agent.co, home, pricing and service pages (read November 12, 2026)
  13. Mainstay Filing, Illinois service pages (read November 12, 2026)