Foreign LLC Registration

Foreign LLC Registration › Illinois

Foreign LLC registration in Illinois

To register an out-of-state LLC in Illinois, file Form LLC-45.5, Application for Admission to Transact Business with the Illinois Secretary of State, Department of Business Services, Limited Liability Division. The state fee is $150.

Best 3 Foreign Registration Services in Illinois (2026)

1. Mainstay Filing

$199 + $150 state fee = $349

Registered agent free for the first year, then $149 a year.

2. IL Registered Agent.org

$199 + $150 state fee = $349

Registered agent included for the first year, then $99 a year.

3. Illinois Registered Agent.co

$199 + $150 state fee = $349

Registered agent included for the first year, then $99 a year.

Service prices read from each provider’s Illinois page on October 28, 2026. The state fee is the official figure below and is paid to the Illinois Secretary of State, Department of Business Services, Limited Liability Division.

Illinois at a glance

State fee
$150
Form
Form LLC-45.5, Application for Admission to Transact Business
Home-state certificate
Certificate of Good Standing or Existence, no older than 60 days
Agent
A registered agent with a Illinois street address
Yearly filing
Annual report (Illinois Secretary of State), $75 (due: within the 60 days before your anniversary month)

How to register in Illinois

  1. Get the home-state certificate. Certificate of Good Standing or Existence, no older than 60 days. Order it from the state where the LLC was formed.
  2. Name a registered agent in Illinois. It needs a street address in the state. All three services below include one for the first year.
  3. File Form LLC-45.5, Application for Admission to Transact Business with the Illinois Secretary of State, Department of Business Services, Limited Liability Division.
  4. Pay the $150 state fee.
  5. Stay current. Yearly filing: Annual report (Illinois Secretary of State), $75 (due: within the 60 days before your anniversary month).

Questions about Illinois

How much does it cost to register a foreign LLC in Illinois?

The state fee is $150. With a filing service at $199, the total is $349 before any state processing charges.

What form does Illinois use?

Form LLC-45.5, Application for Admission to Transact Business, filed with the Illinois Secretary of State, Department of Business Services, Limited Liability Division.

Does Illinois need a certificate from my home state?

Yes. Certificate of Good Standing or Existence, no older than 60 days.

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