Skip to the schedules
Agent Fee TablesFee schedules for LLC and agent services, itemized.

Foreign registration fee schedules | Illinois

3 Best Foreign Registration Services in Illinois (2026): Fee Schedule

For foreign registration services in Illinois, the 2026 schedules rank Mainstay Filing ($199), IL Registered Agent.org ($199) and Illinois Registered Agent.co ($199), in that order. Illinois charges $150 to register, and the services add $397 to $497 in fees over three years.

Prepared by the Agent Fee Tables editorial team ·

Schedules ordered by: Three-year charges (39%) and duties covered (31%) lead, followed by renewal charge, point of equal cost and fee disclosure. How we order

Summary of fees

State charge to register$150ilsos.gov {fee list dated October 2026}
Opening charges$199Provider charges alone
Three-year range$397 to $497First year with two more
What the state bills in 3 years$300Registration, reports, any minimum tax
Totals even out inDoes not occurOrder is fixed for ten years

Ranked schedules

Service fees only. Every schedule is subject to the same $150 state fee.
1

1. Mainstay Filing: best for the same charge in each state

Ranked first

$199 to register, $149 yearly after

Opening charge
$199
Charge from year two
$149/yr
Charges, three years
$497

In Illinois, Mainstay Filing is the best value since $199 for the filing in any state, with the opening registered agent year included.

IL Registered Agent.org charges $100 less by year three; the 31% weight on duties still puts this one first.

No agent charge in year one; $149 a year follows.

Duties the charge covers

  • The foreign registration filing
  • Registered agent at no charge in year one
  • A charge that holds across states

Charges in its favor

  • $199 plus the state's fee
  • No agent charge in year one
  • Same fee wherever you register

Charges against it

  • A higher agent renewal ($149)
Check Mainstay FilingPartner link. We may earn money if you buy.
2

2. IL Registered Agent.org: best for a low registration charge

One-state service

$199 to register, $99 yearly after

Opening charge
$199
Charge from year two
$99/yr
Charges, three years
$397

Following that, IL Registered Agent.org: a Illinois registration through this service starts at $199, and the agent renews at $99.

Duties the charge covers

  • Registration handled for you
  • Agent service in the first year

Charges in its favor

  • $99 yearly from year two
  • $199 over the state fee
  • No agent charge in year one

Charges against it

  • The home state needs a different agent
Check IL Registered Agent.orgPartner link. We may earn money if you buy.
3

3. Illinois Registered Agent.co: best for adding one state

One-state service

$199 to register, $99 yearly after

Opening charge
$199
Charge from year two
$99/yr
Charges, three years
$397

Following that, Illinois Registered Agent.co: a Illinois registration through this service starts at $199, and the agent renews at $99.

Line for line, it ties IL Registered Agent.org.

Duties the charge covers

  • Registration handled for you
  • Agent service in the first year

Charges in its favor

  • $199 over the state fee
  • $99 yearly from year two
  • No agent charge in year one

Charges against it

  • The home state needs a different agent
Check Illinois Registered Agent.coPartner link. We may earn money if you buy.

Year-by-year totals

OrderServiceCharges, year 1Charges, year 2Charges, year 3Charges, year 5
1Mainstay Filing$199$348$497$795Check Mainstay FilingPartner link. We may earn money if you buy.
2IL Registered Agent.org$199$298$397$595Check IL Registered Agent.orgPartner link. We may earn money if you buy.
3Illinois Registered Agent.co$199$298$397$595Check Illinois Registered Agent.coPartner link. We may earn money if you buy.
Year one plus renewals, using charges from November 13, 2026. None of the schedules cross in ten years.

Try other years

How many years do you plan to run the company? Enter them below and compare.
3 years of fees come to Mainstay Filing $497, IL Registered Agent.org $397, Illinois Registered Agent.co $397. Lowest of the totals: IL Registered Agent.org.

Official government charges

LineChargeSource
Cost to register$150ilsos.gov {fee list dated October 2026}
Annual report$75ilga.gov {fee list dated October 2026}
What the state bills by year 3$300Filing, reports and any tax
Three years of state charges come to the filing fee, the reports owed in years two and three, and a yearly minimum tax where the state levies one. Costs without a fixed amount, newspaper publication for example, are mentioned in the text and excluded from the sum.

What settled it

In Illinois, the deciding measure was duties inside the charge (31% of the order), where Mainstay Filing came out ahead.

The home state counts too; a single account for both scored highest.

The Illinois foreign LLC registration fee and rules, in the state's own words

Out-of-state LLCs hand the Application for Admission to Transact Business (Form LLC-45.5) to the Illinois Secretary of State, Department of Business Services, Limited Liability Division and pay $150. Include certificate of Good Standing or Existence at most 60 days.

Staying unregistered may bring loss of the right to act as plaintiff in Illinois (805 ILCS 180/45-45(a)); the fees it would have paid.

Cited at: ilga.gov {fee list dated October 2026}

Without a service

$300 is the floor for three years, all of it state fees. Above that floor, services add $397 to $497.

Quick answers

What does Illinois charge a foreign LLC to register?

$150 to the state, plus $199 for a service.

What do these schedules add up to over three years?

Anywhere from $397 to $497 for three years of service.

Which form completes the registration?

Complete Application for Admission to Transact Business (Form LLC-45.5) and send it to the Illinois Secretary of State, Department of Business Services, Limited Liability Division.

Does Illinois require a document from the home state?

Yes, and it cannot be older than 60 days: certificate of Good Standing or Existence.

Which recurring filing comes after registration?

The annual report, which bills $75.

When does one schedule pass another in total charges?

The schedules do not cross in the first ten years.

Which foreign registration service is the best value for Illinois?

Mainstay Filing is first, with IL Registered Agent.org and Illinois Registered Agent.co behind it.

Related schedules

Fee sources

  1. ilsos.gov is the basis for Illinois Secretary of State, Department, as of August 2026.
  2. ilsos.gov is the basis for Illinois Secretary of State, Department, as of August 2026.
  3. ilga.gov is the basis for 805 ILCS 180/5-5, as of August 2026.
  4. ilga.gov is the basis for Illinois formation fee: Filing fee, as of October 2026.
  5. ilsos.gov is the basis for Illinois formation fee: Filing fee, as of October 2026.
  6. ilga.gov is the basis for Illinois registered agent statute, as of October 2026.
  7. ilsos.gov is the basis for Form LLC-45.5, Application for Admission, as of October 2026.
  8. ilsos.gov is the basis for Form LLC-45.40, Application for Withdrawal, as of October 2026.
  9. ilga.gov is the basis for 805 ILCS 180/45-45, consequences of, as of October 2026.
  10. ilga.gov is the basis for 805 ILCS 180/45-47, activities that, as of October 2026.
  11. ilga.gov is the basis for 805 ILCS 180/45-45, as of November 2026.
  12. Mainstay Filing's Illinois service page, dated November 13, 2026
  13. IL Registered Agent.org's pricing page, dated November 13, 2026
  14. Illinois Registered Agent.co's pricing page, dated November 13, 2026