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Biz Formation Report

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

Provider review · Illinois

Illinois Registered Agent.co Review (2026)

By the Biz Formation Report editorial team

$99 a year is what Illinois Registered Agent.co charges for Illinois registered agent service, and the same $99 at renewal. The plan covers an in-state street address for the registered office and online scans of legal papers served on the company. an Illinois LLC formed through it costs $199 plus the state fee, with the first year of agent service included. Foreign registration in Illinois runs $199 plus the state fee. Our reading: a fit for an Illinois-only company that wants a fixed agent price and will file its own Limited Liability Company Annual Report.

Our finding

Illinois Registered Agent.co: a fit for an Illinois-only companies

Score8.9out of 10
$99 yearly

A straightforward Illinois agent with a flat price and a fixed renewal.

What you get

  • An in-state street address as the registered office
  • Every legal paper served is scanned for you to read online

Good

  • $99 a year, unchanged at renewal
  • A lower yearly agent price than Mainstay Filing
  • Offers LLC formation and foreign registration too
  • Year-one agent service is included with LLC formation

Weak spots

  • Submitting the Limited Liability Company Annual Report is left to you
  • $99 extra for the EIN application
  • Illinois only; other states need a different agent
Visit Illinois Registered Agent.coPartner link. We may earn money if you buy.

What $99 a year includes

Under the $99-a-year plan, Illinois Registered Agent.co becomes the company's Illinois registered agent. The company gets an in-state street address for its registered office, and legal papers served there are scanned and uploaded to your account. The renewal price is unchanged at $99.

Illinois Registered Agent.co for an Illinois LLC formation

For $199, Illinois Registered Agent.co prepares and submits the formation document, and Illinois's own filing fee is extra. Year one of registered agent service is included, then the agent costs $99 a year. An EIN application adds $99, although the IRS issues EINs free of charge.

Illinois Registered Agent.co leaves the Limited Liability Company Annual Report to the owner. Illinois expects it every year, due before the first day of the entity's anniversary month at $75.

Illinois Registered Agent.co and foreign registration in Illinois

Illinois Registered Agent.co registers an outside company in Illinois for $199 plus the state's $150 fee. Year one of registered agent service is part of the package. The company supplies certificate of Good Standing or Existence, issued within 60 days.

Illinois Registered Agent.co compared with Mainstay Filing

Mainstay Filing's agent plan totals $447 over three years, against $297 at Illinois Registered Agent.co, a difference of $150. Mainstay Filing offers one agent plan that works in all fifty states and scans the first three government mailings a year free. Mainstay Filing charges $199 a year for formation and files the annual report; Illinois Registered Agent.co totals $397 over three years for formation and the agent, with no report filing. IL Registered Agent.org is the other Illinois agent in this report; it charges the same $99 a year, and the two grade close together.

Illinois Registered Agent.co: common questions

How much does Illinois Registered Agent.co cost per year?

$99 a year for registered agent service, with no change at renewal. LLC formation costs $199 plus the Illinois filing fee.

Does Illinois Registered Agent.co prepare my annual report?

No. The Illinois Limited Liability Company Annual Report is not covered by its published prices, so you submit it.

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

Yes, for a company that will remain in Illinois and wants a stable agent price. Its average score across our Illinois pages is 8.9.

What is included with Illinois Registered Agent.co?

Illinois registered office address, with online scans of papers served on the company.

Does Illinois Registered Agent.co handle foreign registration in Illinois?

Yes, at $199 plus Illinois's fee, and it includes a year of agent service.

More from us

Source notes

  1. Illinois registered agent statute (verified October 2026)
  2. Illinois Secretary of State, Department of Business Services, Limited Liability Division (verified August 2026)
  3. Illinois Secretary of State, Department of Business Services, Limited Liability Division (verified August 2026)
  4. 805 ILCS 180/5-5 (verified August 2026)
  5. Illinois formation fee: Filing fee, official source (verified October 2026)
  6. Illinois formation fee: Filing fee, official source (verified October 2026)
  7. Form LLC-45.5, Application for Admission (verified October 2026)
  8. Form LLC-45.40, Application for Withdrawal (verified October 2026)
  9. 805 ILCS 180/45-45, consequences of transacting business without admission (verified October 2026)
  10. 805 ILCS 180/45-47, activities that are not transacting business (verified October 2026)
  11. 805 ILCS 180/45-45 (verified November 2026)
  12. Pulled November 12, 2026: Illinois Registered Agent.co, home, pricing and service pages
  13. Pulled November 12, 2026: Mainstay Filing, Illinois service pages