LLC price index · Illinois
3 Best LLC Services in Illinois (2026): Price Index
Index basis: Index of five columns: three-year cost (38%), coverage per dollar (32%), renewal step, crossover year and price transparency. Basis explained
Ledger summary
The indexed ledger
1. Mainstay Filing: best for one price for filing and upkeep
First lineMainstay Filing indexes highest here. The entries: filing, registered agent and annual report together for $199 a year, renewing at $199.
Spend $200 more than Illinois Registered Agent.co over three years and the recurring paperwork leaves your desk.
Filing each Limited Liability Company Annual Report is part of the service; the state's $75 is billed at cost.
Line includes
- Articles of organization filed for you
- Registered agent for the full year
- Annual report, prepared and filed
- The EIN application
- State fee at exact cost
Credits
- $199 annually, everything included
- The EIN application is part of the price
- Renewal stays at $199
Debits
- From year two it runs $100 above Illinois Registered Agent.co
2. Illinois Registered Agent.co: best for the smallest first bill
Illinois focusIllinois Registered Agent.co is line 2: $199 in year one and $99 in every later year.
The Limited Liability Company Annual Report is not part of its price.
Line includes
- State formation handled
- Agent service in year one
Credits
- Agent included at the start
- $199 to form
- Then $99 per year
Debits
- The Limited Liability Company Annual Report sits outside the price
- The EIN application is not included ($99)
3. IL Registered Agent.org: best for companies that stay home
Illinois focusIL Registered Agent.org is line 3: $199 in year one and $99 in every later year.
The Limited Liability Company Annual Report is not part of its price.
On price alone it is a tie with Illinois Registered Agent.co.
Line includes
- State formation handled
- Agent service in year one
Credits
- $199 to form
- Agent included at the start
- Then $99 per year
Debits
- The Limited Liability Company Annual Report sits outside the price
- The EIN application is not included ($99)
Cumulative ledger
| Line | Provider | Total, year 1 | Total, year 2 | Total, year 3 | Total, year 5 | |
|---|---|---|---|---|---|---|
| 1 | Mainstay Filing | $199 | $398 | $597 | $995 | Visit Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | Illinois Registered Agent.co | $199 | $298 | $397 | $595 | Visit Illinois Registered Agent.coPartner link. We may earn money if you buy. |
| 3 | IL Registered Agent.org | $199 | $298 | $397 | $595 | Visit IL Registered Agent.orgPartner link. We may earn money if you buy. |
Subtotal calculator
The Illinois fee schedule
| Entry | Amount | Cited from |
|---|---|---|
| LLC formation fee | $150 | ilsos.gov (read October 2026) per the state |
| Limited Liability Company Annual Report | $75 every year | ilsos.gov (read October 2026) per the state |
| Late filing | $100 | ilsos.gov (read October 2026) per the state |
| Three-year state subtotal | $300 | Total of the above |
Why line one is line one
Weight 32%: coverage per dollar. That column separated the top two lines.
Filing the Limited Liability Company Annual Report for you outweighed Illinois Registered Agent.co's lower three-year subtotal.
EIN included, the crossover year is 2: Mainstay Filing passes Illinois Registered Agent.co.
Official Illinois LLC filing fee and requirements
$150 pays for the filing that creates the LLC, which is the Articles of Organization (Form LLC-5.5) delivered to the Illinois Secretary of State. Every LLC must name a registered agent with an in-state street address.
Official wording: ilsos.gov (read October 2026) per the state
Going without a service
With no service, three years cost $300 in state fees alone. Each service adds its own line, $397 to $597 over the same period.
Quick answers
How much does LLC formation service cost in Illinois?
$199 in year one among our lines, plus the $150 state fee.
What is the three-year subtotal for these services?
$397 to $597 in service fees, state charges excluded.
What fee does Illinois charge to file an LLC?
$150 at the state, using the Articles of Organization (Form LLC-5.5).
What does Illinois charge after the first year?
$75 annually for the Limited Liability Company Annual Report, with the deadline described as before the first day of the entity's anniversary month.
Does any line include the EIN application?
Mainstay Filing includes it, Illinois Registered Agent.co charges $99 and IL Registered Agent.org charges $99.
When does one line pass another in total cost?
The lines do not cross in the first ten years.
Which LLC formation service indexes best in Illinois?
Top to bottom, the Illinois ledger reads Mainstay Filing, Illinois Registered Agent.co and IL Registered Agent.org.
Source lines
- Line for Illinois Secretary of State, Department: ilsos.gov, August 2026.
- Line for Illinois Secretary of State, Department: ilsos.gov, August 2026.
- Line for 805 ILCS 180/5-5: ilga.gov, August 2026.
- Line for Illinois formation fee: Filing fee: ilga.gov, October 2026.
- Line for Illinois formation fee: Filing fee: ilsos.gov, October 2026.
- Line for Illinois registered agent statute: ilga.gov, October 2026.
- Mainstay Filing Illinois service page (read November 13, 2026)
- Illinois Registered Agent.co pricing page (read November 13, 2026)
- IL Registered Agent.org pricing page (read November 13, 2026)