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Register Your Wyoming LLC in Illinois

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

Cost Summary

Illinois filing fee
$150
Wyoming Certificate of Good Standing
Free
Annual obligation in Illinois
$75/year
Estimated year 1 total
$225
Note: Year 1 total covers Illinois state fees only. You will also need a Certificate of Good Standing from Wyoming, which the state issues at no charge. Registered agent fees are not included.
Wyoming data last reviewed Aug 15, 2026 · sos.wyo.gov
Illinois data last reviewed Aug 15, 2026 · ilsos.gov

How to register your Wyoming 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 Good Standing from Wyoming

Illinois requires a Certificate of Good Standing from Wyoming to prove your LLC is in good standing. Wyoming issues it at no charge. Available to order online. No state-imposed expiration; third parties typically require certificate dated within 30-60 days.

Order from Wyoming ↗
3

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

Submit your application along with the Certificate of Good Standing 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, defending, or settling a lawsuit or other proceeding
  • Holding meetings of members or managers, or carrying on internal company affairs
  • Maintaining bank accounts
  • Maintaining an office or agent to transfer, exchange, or register the company's own securities, or keeping a trustee or depositary for them
  • Selling through independent contractors
  • Soliciting or obtaining orders, by mail or through employees or agents, if orders require acceptance outside the state before becoming contracts
  • Owning real or personal property, and nothing more
  • Conducting an isolated transaction completed within 120 days that is not part of repeated similar transactions
  • Having a member or manager who is a resident of Illinois

Under 805 ILCS 180/45-47, all 9 statutory items. Illinois diverges from the uniform act three ways: the isolated-transaction window is 120 days rather than 30; there is a unique safe harbor for having a member or manager who is an Illinois resident; and the list omits indebtedness, debt collection and interstate commerce entirely. Subsection (b) disclaims service of process only, with no taxation clause.

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.