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The Formation Desk

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

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Illinois Registered Agent.co Review (2026)

Illinois Registered Agent.co puts registered agent service in Illinois at $99 a year, and the same $99 at renewal. You get an in-state street address for the registered office and online scans of papers served on the company. It will also form an Illinois LLC for $199 plus the state fee, with the first agent year included. And it handles foreign registration in Illinois for $199 plus the state fee. The desk's read: a good fit for an Illinois-only company that wants a fixed agent price and will file its own Limited Liability Company Annual Report.
Written by The Formation Desk editorial team
The desk says

Illinois Registered Agent.co: our read for an Illinois-only companies

$99 a year, the same at renewal

Editorial score 9.1 out of 10

A no-nonsense Illinois agent: flat price, fixed renewal.

In the price

  • A registered office address inside the state
  • You get online scans of any papers served on the company

Strengths

  • $99 a year and it holds
  • Cheaper per year than Mainstay Filing for the agent
  • Sells LLC formation and foreign registration too
  • A free first agent year with LLC formation

Cons

  • Does not touch the Limited Liability Company Annual Report for you
  • EIN application costs $99 more
  • Covers Illinois only; other states need another agent
Visit Illinois Registered Agent.coPartner link. We may earn money if you buy.

What the $99 plan gets you

$99 a year makes Illinois Registered Agent.co your Illinois registered agent. The company gets a registered office at an in-state street address, and papers served there are scanned and sent to your account. It renews at the same $99.

Forming an Illinois LLC with Illinois Registered Agent.co

Illinois Registered Agent.co handles the formation for $199, and Illinois's filing fee is billed on top. A first year of registered agent service is included, then the agent runs $99 a year. An EIN application costs $99 more, though the IRS gives EINs away free.

Later on, Illinois wants the Limited Liability Company Annual Report every year, with a $75 fee. Illinois Registered Agent.co will not file it for you.

Bringing an outside company into Illinois through Illinois Registered Agent.co

Through Illinois Registered Agent.co, bringing a company into Illinois costs $199, with Illinois's $150 fee on top. A first year of registered agent service is included. You bring certificate of Good Standing or Existence, issued within 60 days.

Illinois Registered Agent.co next to Mainstay Filing

Strip it down to the agent and Illinois Registered Agent.co costs $297 over three years, against $447 at Mainstay Filing, $150 apart. Mainstay Filing runs one agent plan for all fifty states and scans the first three government mailings a year free. Mainstay Filing's formation package is $199 a year and takes care of the annual report; with Illinois Registered Agent.co the LLC route totals $397 over three years, agent included, report filing not. IL Registered Agent.org is the other Illinois agent the desk ranks; it charges the same $99 a year, and the two finish close.

Illinois Registered Agent.co: reader questions

How much is Illinois Registered Agent.co?

$99 a year for registered agent service, and the price holds on renewal. Forming an LLC is $199 plus the Illinois filing fee.

Will Illinois Registered Agent.co send in my yearly report?

No. The Illinois Limited Liability Company Annual Report is not in its prices, so it is yours to send.

Would the desk recommend Illinois Registered Agent.co as the registered agent for an Illinois LLC?

Yes, if the company will stay in Illinois and you want a steady agent price. Its average score across our Illinois pages is 9.1.

What do you get from Illinois Registered Agent.co?

A Illinois registered office address, and scans of what gets served on the company, online.

Can Illinois Registered Agent.co register an outside company in Illinois?

Yes, for $199 plus Illinois's fee, and a year of agent service comes with it.

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Where the numbers came from

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