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Filing MapperRoutes through every state's LLC paperwork, priced leg by leg.

Registered agent guide · Illinois

Illinois Registered Agent Route (2026): Rules, State Fees and the 3 Best Agents

For a registered agent in Illinois, our 2026 routing puts Mainstay Filing ($149 a year), IL Registered Agent.org ($99 a year) and Illinois Registered Agent.co ($99 a year) in that order. Carrying a registered agent is part of staying legal in Illinois. The state's tolls repeat at $75 a year, mile 34th of 50.

Surveyed by the Filing Mapper team

Illinois, measured

34th

of fifty by yearly state tolls

The route starts at the smallest toll (shared mile). Every state on one map

Registered agent required
Yes
Survey of ilga.gov, October 2026
Limited Liability Company Annual Report
$75 / yr
The checkpoint closes, in the state's words: before the first day of the entity's anniversary month. Survey of ilsos.gov, October 2026
State toll, one year
$75
What the state tolls in a typical year

Illinois route picks

How the stops were ordered: cost over three years, steps covered, renewal, Illinois fit, fee labeling (method).

1. Mainstay Filing: best for companies that might cross into other states

Our lead pick$149 for the first lap, the same for the next

We put Mainstay Filing at the head of the route because $149 per year here and the same elsewhere, with renewal at $149.

Its three-year provider cost runs $150 above IL Registered Agent.org's, and in exchange more of the state's checkpoints are cleared for you.

The fare covers

  • Illinois registered office, address supplied
  • If papers are served on the company, they are scanned the same business day at no cost
  • Letters from government offices are scanned free, the first three each year
  • The same service runs for corporations, partnerships and nonprofits

On the plus side

  • Good in each of the fifty states
  • A flat $149/yr

On the minus side

  • IL Registered Agent.org charges $50 less per lap
  • Reports are the owner's to clear on this ticket
Visit Mainstay FilingPartner link. We may earn money if you buy.

2. IL Registered Agent.org: best for a business with one state on the map

Built for Illinois$99 for the first lap, the same for the next

Stop 2, IL Registered Agent.org: a nearby agent at $99 a year whose street address goes on the public map.

The fare covers

  • Street address the state can reach
  • Whatever is served is scanned and posted

On the plus side

  • A flat $99/yr
  • Costs less per lap than Mainstay Filing

On the minus side

  • A one-state route
  • Limited Liability Company Annual Report sits outside the fare
Visit IL Registered Agent.orgPartner link. We may earn money if you buy.

3. Illinois Registered Agent.co: best for a second route within Illinois

Built for Illinois$99 for the first lap, the same for the next

Stop 3, Illinois Registered Agent.co: a nearby agent at $99 a year whose street address goes on the public map.

IL Registered Agent.org and this provider publish the same fares.

The fare covers

  • Street address the state can reach
  • Whatever is served is scanned and posted

On the plus side

  • Costs less per lap than Mainstay Filing
  • A flat $99/yr

On the minus side

  • A one-state route
  • Limited Liability Company Annual Report sits outside the fare
Visit Illinois Registered Agent.coPartner link. We may earn money if you buy.

The route as numbers

StopProviderYearly rateRenewal rateProvider cost, three years
1Mainstay Filing$149$149/yr$447Visit Mainstay FilingPartner link. We may earn money if you buy.
2IL Registered Agent.org$99$99/yr$297Visit IL Registered Agent.orgPartner link. We may earn money if you buy.
3Illinois Registered Agent.co$99$99/yr$297Visit Illinois Registered Agent.coPartner link. We may earn money if you buy.

Provider fare pages, read November 12, 2026. Illinois's own tolls do not change with the agent you name.

Agent fares and state tolls by year

Each agent fare is paired with the state tolls that repeat (the Limited Liability Company Annual Report beginning in year two). The opening fee is not in the total.

3 years with Mainstay Filing: $597 in all, split $150 state and $447 provider.

Illinois and the stops on either side of it

MileStateYearly state fees
31stWyoming$60
33rdWashington$70
34thIllinois$75
34thNew Jersey$75
36thConnecticut$80

The entire route map is at Registered agent rules by state, lightest tolls first.

Illinois registered agent requirements by statute

Every LLC must name a registered agent with an in-state street address. The address has to be a registered office in Illinois that matches the agent's business office. A P.O. box alone is not accepted.

Who may serve on this route: An Illinois resident, or a business authorized to do business in Illinois. The LLC cannot act as its own agent. (805 ILCS 180/1-35)

What Illinois bills every lap

Beside the agent, the LLC clears the Limited Liability Company Annual Report every year at $75, before the first day of the entity's anniversary month. A late arrival costs $100.

How the Illinois stops were ordered

For Illinois, the criterion that decided the lead was steps the service takes over, at 27%.

One agent for every route beat the one-state option.

Illinois: your route questions

Does every Illinois LLC have to carry a registered agent?

Yes. Every LLC must name a registered agent with an in-state street address.

Who is allowed to serve as the registered agent on a Illinois route?

An Illinois resident, or a business authorized to do business in Illinois. The LLC cannot act as its own agent.

What does registered agent service cost per year for Illinois?

Allow $99 to $149 each year.

What does the state toll an LLC every year?

$75 a year by our one-year measure, which is the Limited Liability Company Annual Report ($75 every year).

Which registered agents are on this route?

Mainstay Filing ($149 a year), IL Registered Agent.org ($99 a year) and Illinois Registered Agent.co ($99 a year), in route order, from the first stop.

Which registered agent should I take?

The route begins at Mainstay Filing (one $149 fare covers all fifty states, so a growing company keeps one agent) and continues with IL Registered Agent.org and Illinois Registered Agent.co.

Keep traveling

Survey markers for this route

Survey marker
  1. Marker ilsos.gov, covering Illinois Secretary of State, Department of Business Services, logged August 2026.
  2. Marker ilsos.gov, covering Illinois Secretary of State, Department of Business Services, logged August 2026.
  3. Marker ilga.gov, covering 805 ILCS 180/5-5, logged August 2026.
  4. Marker ilga.gov, covering Illinois formation fee: Filing fee, official source, logged October 2026.
  5. Marker ilsos.gov, covering Illinois formation fee: Filing fee, official source, logged October 2026.
  6. Marker ilga.gov, covering Illinois registered agent statute, logged October 2026.
  7. Marker wyobiz.wyo.gov, covering Wyoming Secretary of State, Business Division, logged August 2026.
  8. Marker wyobiz.wyo.gov, covering Wyoming Secretary of State, Business Division, logged August 2026.
  9. Marker ccfs.sos.wa.gov, covering Washington Secretary of State, Corporations & Charities Division, logged August 2026.
  10. Marker sos.wa.gov, covering Washington Secretary of State, Corporations & Charities Division, logged August 2026.
  11. Marker sos.wa.gov, covering Washington yearly filing: Annual report, official source, logged October 2026.
  12. Marker njportal.com, covering New Jersey Division of Revenue and Enterprise Services, logged August 2026.
  13. Marker njportal.com, covering New Jersey Division of Revenue and Enterprise Services, logged August 2026.
  14. Marker business.ct.gov, covering Connecticut Secretary of the State, Business Services Division, logged August 2026.
  15. Marker business.ct.gov, covering Connecticut Secretary of the State, Business Services Division, logged August 2026.
  16. Marker business.ct.gov, covering Connecticut yearly filing: Annual report: fee, official source, logged October 2026.
  17. Mainstay Filing: Illinois service page, surveyed on the company site November 12, 2026
  18. IL Registered Agent.org: pricing page, surveyed on the company site November 12, 2026
  19. Illinois Registered Agent.co: pricing page, surveyed on the company site November 12, 2026