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Register Your Maryland LLC in Illinois

Step-by-step foreign qualification requirements, fees, and filing instructions for Maryland LLCs expanding into Illinois.

Cost Summary

Illinois filing fee
$150
Maryland Certificate of Status
$20
Annual obligation in Illinois
$75/year
Estimated year 1 total
$245
Note: Year 1 total includes the $150 filing fee in Illinois, the $20 Certificate of Status fee from Maryland, and $75 in first-year Illinois state charges. Registered agent fees (typically $100-$200/year) are not included.
Maryland data last reviewed Aug 1, 2026 · dat.maryland.gov
Illinois data last reviewed Aug 1, 2026 · ilsos.gov

How to register your Maryland LLC in Illinois

1

Check name availability in Illinois

Before filing, verify that your LLC name (or a distinguishable variation) is available in Illinois. If your exact name is already taken, you may need to register under a fictitious or assumed name.

Search Illinois business names ↗
2

Get a Certificate of Status from Maryland

Illinois requires a Certificate of Status from Maryland to prove your LLC is in good standing. The fee is $20. Available to order online. No state-imposed expiration; third parties typically require certificate dated within 30-60 days.

Order from Maryland ↗
3

File the Application for Admission to Transact Business (Form LLC-45.5) in Illinois

Submit your application along with the Certificate of Status and the $150 filing fee. Processing time is 10-45 days by mail; same-day if filed in person with the $100 expedite. Expedited processing available for $100, and it requires in-person submission at the Springfield or Chicago office. Not available by mail and not available online..

Illinois filing portal ↗
4

Appoint a registered agent in Illinois

You must designate a registered agent with a physical address in Illinois to accept legal documents on behalf of your LLC. This is required as part of the foreign qualification application.

Ongoing compliance in Illinois

Annual report
$75/year
Report due
Anniversary month
Processing time
10-45 days by mail; same-day if filed in person with the $100 expedite
Expedite
$100, and it requires in-person submission at the Springfield or Chicago office. Not available by mail and not available online.

Important to know about Illinois

  • Operating unregistered costs $100 for each month or fraction of a month, so the penalty compounds faster than in most states.

Registering after you already started doing business in Illinois? See the Illinois late-registration penalties for the back fees and fines that can apply.

Activities that do NOT require registration in Illinois

  • Maintaining or defending a lawsuit
  • Holding meetings of members or managers
  • Maintaining bank accounts
  • Selling through independent contractors
  • Conducting isolated transactions completed within 120 days

Illinois's Limited Liability Company Act, codified at 805 ILCS 180, lists activities at Section 45-47 ('Activities that do not constitute transacting business'). Section 45-5 is the corresponding 'Admission to transact business' provision (the registration requirement). Illinois deviates from the standard RULLCA list in two ways: (1) the isolated transaction window is 120 days rather than the typical 30 days, and (2) the enumeration is shorter (9 items rather than the typical 11-12), notably omitting interstate commerce and creating/acquiring indebtedness. The previous citation to 805 ILCS 180/45-5 was incorrect.

Need a registered agent in Illinois?

A registered agent is required for foreign qualification. These services operate in all 50 states.

Get Northwest Registered Agent ↗
Recommended · $125/year · Privacy included
Registered Agents Inc
$200/year · Report filing included, state fees extra
Visit site ↗
Harbor Compliance
$99 first year, then $149/year · Full-service compliance option
Visit site ↗

Not sure which service fits? Our full Northwest Registered Agent review and Harbor Compliance review cover pricing, renewal terms, and where each one fits.

Check your full compliance

Use our free tool to check if you need to register in additional states.

Start free compliance check ↗

This page provides general information based on publicly available state requirements. It is not legal advice. Verify all fees and requirements with the Illinois Secretary of State before filing.