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Formation Scorecard

Write-up · Illinois

Illinois Registered Agent.co Review (2026)

Illinois Registered Agent.co charges $99 a year for Illinois registered agent service, with the same $99 at renewal. The plan includes an in-state street address for the registered office and online scans of legal papers served on the company. The company also forms an Illinois LLC for $199 plus the state fee, counting the first year of agent service in that price. It also handles foreign registration in Illinois at $199 plus the state fee. Score note: a good match for an Illinois-only company that wants a flat agent price and files its own Limited Liability Company Annual Report.
Researched and written by the Formation Scorecard editorial team
Score summary

Illinois Registered Agent.co: scored for an Illinois-only companies

8.8 Editor score out of 10
$99/yr, renews at $99

A plain Illinois agent: flat price, fixed renewal, nothing fancy.

What you get

  • A registered office street address in the state
  • Online scans of each legal paper served on the company

Strengths

  • $99 a year with no step up
  • Costs less each year than Mainstay Filing
  • Handles LLC formation and foreign registration as well
  • Year-one agent service is free when it forms your LLC

Watch for

  • Limited Liability Company Annual Report filing is not covered
  • EIN application costs $99 extra
  • Serves Illinois only, so other states need their own agent
Visit Illinois Registered Agent.coPartner link. We may earn money if you buy.

The $99 plan, line by line

For $99 a year, Illinois Registered Agent.co acts as the Illinois registered agent. You receive an in-state street address for the registered office, and papers served on the company are scanned and posted to your account. Renewal holds at $99.

Using Illinois Registered Agent.co to form an Illinois LLC

Illinois Registered Agent.co prepares and files the formation document for $199; the state's filing fee is billed separately. Year one of registered agent service comes with it, and the agent runs $99 a year afterwards. The EIN application is a $99 extra, though the IRS charges nothing for an EIN.

Later, Illinois asks for the Limited Liability Company Annual Report every year, due before the first day of the entity's anniversary month with a $75 fee. Illinois Registered Agent.co does not file it, so it stays on your list.

Bringing an existing company into Illinois with Illinois Registered Agent.co

Illinois Registered Agent.co sends the registration to the state for $199, and Illinois's $150 fee is added. A year of registered agent service rides along. You supply certificate of Good Standing or Existence, issued within 60 days.

Where Illinois Registered Agent.co stands against Mainstay Filing

Agent service alone adds up to $297 over three years at Illinois Registered Agent.co and $447 at Mainstay Filing, a $150 spread. Mainstay Filing runs a single agent plan across all fifty states and scans the first three government mailings a year free. Mainstay Filing's formation package costs $199 a year and adds the annual report, while Illinois Registered Agent.co's LLC route totals $397 over three years with the agent but no report filing. IL Registered Agent.org is the other Illinois agent on the card; it charges the same $99 a year, and the two sit close together.

Illinois Registered Agent.co: quick questions

What is Illinois Registered Agent.co's price?

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

Will Illinois Registered Agent.co handle my yearly report?

No. The Illinois Limited Liability Company Annual Report is not in its published prices, so you send it in yourself.

Does Illinois Registered Agent.co score well as a registered agent for an Illinois LLC?

Yes, when the company will stay in Illinois and wants a steady agent price. Its average score across our Illinois pages is 8.8.

What does the Illinois Registered Agent.co plan include?

A Illinois registered office address and online scans of anything served on the company.

Can Illinois Registered Agent.co bring an outside company into Illinois?

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

Read next

Where the figures come from

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