State filing fee
$150
ilsos.gov (read October 2026)
LLC cost guide · Illinois
Illinois LLC Fees and Costs (2026): the Official Numbers and the 3 Best LLC Services
The best picks for setting up an LLC in Illinois in 2026 are Illinois Registered Agent.co ($199), IL Registered Agent.org ($199) and Mainstay Filing ($199), in that order. A Illinois LLC pays the state $150 at formation, then $75 every year on the Limited Liability Company Annual Report. The three-year state bill sits at number 33rd out of 50.
Facts for Illinois
33rd
of 50 states on state fees over three years
Number 1 owes the state the least (same total as other states). Every state side by side
Limited Liability Company Annual Report
$75 / yr
Due date, in the state's own words: before the first day of the entity's anniversary month. ilsos.gov (read October 2026)
Penalty for filing late
$100
ilsos.gov (read October 2026)
State charges over 3 years
$300
The filing fee and two years of upkeep
Our Illinois recommendations
The method page lists every criterion and weight.
1. Illinois Registered Agent.co: best for a thrifty first year
Year 1 costs $199; every later year $99
Number one, Illinois Registered Agent.co, for this reason: a formation price of $199 above the state fee, then $99 for the agent from year 2.
Mainstay Filing costs more over three years, and that criterion is worth 34% of the score.
Set aside time for the Limited Liability Company Annual Report every year.
What the price takes in
- Prepares the formation filing
- First year of agent service
In its favor
- Agent covered in year 1
- $199 plus the state fee
- $99 per year after that
Against it
- The owner still files the Limited Liability Company Annual Report
- The EIN is not in the price ($99)
2. IL Registered Agent.org: best for a cheaper agent renewal
Year 1 costs $199; every later year $99
IL Registered Agent.org comes second because a formation price of $199 above the state fee, then $99 for the agent from year 2.
Set aside time for the Limited Liability Company Annual Report every year.
Its prices equal Illinois Registered Agent.co's, so the two are close.
What the price takes in
- Prepares the formation filing
- First year of agent service
In its favor
- $99 per year after that
- $199 plus the state fee
- Agent covered in year 1
Against it
- The owner still files the Limited Liability Company Annual Report
- The EIN is not in the price ($99)
3. Mainstay Filing: best for a deadline calendar kept for you
$199 yearly plus the $150 state fee
Number 3, Mainstay Filing, for this reason: a single yearly price of $199 pays for formation, a registered agent and the annual report.
Illinois Registered Agent.co comes out $200 ahead on three-year provider fees.
Filing the Limited Liability Company Annual Report is part of the price, and the state's $75 is added at cost.
What the price takes in
- Files the formation papers for you
- Registered agent for twelve months
- Prepares and files the annual report
- Takes care of the EIN application
- You pay the state fee as set
In its favor
- A flat $199 each year
- Renews at $199
- The EIN application is included
Against it
- The yearly bill is $100 bigger than Illinois Registered Agent.co's
Prices in one place
| No. | Provider | First year | Later years | Provider fees over 3 years | |
|---|---|---|---|---|---|
| 1 | Illinois Registered Agent.co | $199 | $99/yr | $397 | Visit Illinois Registered Agent.coPartner link. We may earn money if you buy. |
| 2 | IL Registered Agent.org | $199 | $99/yr | $397 | Visit IL Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | Mainstay Filing | $199 | $199/yr | $597 | Visit Mainstay FilingPartner link. We may earn money if you buy. |
Every price here was read from the company's own site on November 13, 2026. The state's $150 is left out of the numbers above.
LLC cost calculator
Choose a number of years and a provider. The state part follows the official fee schedule: $150 to form, then the Limited Liability Company Annual Report from year 2.
Illinois and the states around it in the ranking
| Place | State | Three-year state fees |
|---|---|---|
| 31st | South Dakota | $260 |
| 32nd | Connecticut | $280 |
| 33rd | Illinois | $300 |
| 33rd | New Hampshire | $300 |
| 33rd | Oregon | $300 |
LLC costs by state puts every state in order, lowest cost first.
Illinois formation fee and the form to use
The fee is $150. Send the Articles of Organization (Form LLC-5.5) to the Illinois Secretary of State, under 805 ILCS 180/5-5. Each provider below adds this fee at cost.
Good standing in Illinois depends on the Limited Liability Company Annual Report
The Limited Liability Company Annual Report comes around once a year and costs $75, before the first day of the entity's anniversary month. Late filers pay $100.
The reasoning
Illinois Registered Agent.co moved ahead of IL Registered Agent.org on service bill, years one to three, which is weighted 34%.
Illinois Registered Agent.co comes to $397 in provider fees over three years, $200 less than Mainstay Filing.
Illinois questions and answers
How much does Illinois charge to form an LLC?
Filing costs $150 at the state office. The picks bill $199 on top of the state fee.
What will filing the Limited Liability Company Annual Report cost in Illinois?
It costs $75 and is due every year, before the first day of the entity's anniversary month. A late filing draws $100.
Where does Illinois stand on LLC costs?
Illinois is number 33rd of 50 on three-year state fees, tied with other states, at $300. The lowest total takes number 1.
Does Illinois require a registered agent?
Every LLC must name a registered agent with an in-state street address.
Which LLC services does this page rank?
Illinois Registered Agent.co ($199), IL Registered Agent.org ($199) and Mainstay Filing ($199), in order, starting with our top pick.
Which LLC service would you choose?
Choose Illinois Registered Agent.co: $199 plus the state fee, with the first agent year included, then $99 per year. Then IL Registered Agent.org and Mainstay Filing.
Where these facts come from
- Check our statements on Illinois Secretary of State, Department of Business Services against ilsos.gov, the official page, which we last read in August 2026.
- Check our statements on Illinois Secretary of State, Department of Business Services against ilsos.gov, the official page, which we last read in August 2026.
- Check our statements on 805 ILCS 180/5-5 against ilga.gov, the official page, which we last read in August 2026.
- Check our statements on Illinois formation fee: Filing fee, official source against ilga.gov, the official page, which we last read in October 2026.
- Check our statements on Illinois formation fee: Filing fee, official source against ilsos.gov, the official page, which we last read in October 2026.
- Check our statements on Illinois registered agent statute against ilga.gov, the official page, which we last read in October 2026.
- Check our statements on SDCL 47-34A-203 against sdlegislature.gov, the official page, which we last read in August 2026.
- Check our statements on South Dakota formation fee: Filing fee, official source against sdsos.gov, the official page, which we last read in October 2026.
- Check our statements on South Dakota formation fee: Filing fee, official source against sdlegislature.gov, the official page, which we last read in October 2026.
- Check our statements on South Dakota Secretary of State, Business Services / against sdsos.gov, the official page, which we last read in August 2026.
- Check our statements on South Dakota Secretary of State, Business Services / against sosenterprise.sd.gov, the official page, which we last read in August 2026.
- Check our statements on South Dakota yearly filing: Annual report: fee and against sdlegislature.gov, the official page, which we last read in October 2026.
- Check our statements on Conn against cga.ct.gov, the official page, which we last read in August 2026.
- Check our statements on Connecticut formation fee: Filing fee, official source against business.ct.gov, the official page, which we last read in October 2026.
- Check our statements on Connecticut formation fee: Filing fee, official source against business.ct.gov, the official page, which we last read in October 2026.
- Check our statements on Connecticut Secretary of the State, Business Services Division against business.ct.gov, the official page, which we last read in August 2026.
- Check our statements on Connecticut Secretary of the State, Business Services Division against business.ct.gov, the official page, which we last read in August 2026.
- Check our statements on Connecticut yearly filing: Annual report: fee, official source against business.ct.gov, the official page, which we last read in October 2026.
- Check our statements on N.H against gc.nh.gov, the official page, which we last read in August 2026.
- Check our statements on New Hampshire formation fee: Filing fee, official source against sos.nh.gov, the official page, which we last read in October 2026.
- Check our statements on New Hampshire formation fee: Filing fee, official source against gc.nh.gov, the official page, which we last read in October 2026.
- Check our statements on New Hampshire Secretary of State, Corporations Division against sos.nh.gov, the official page, which we last read in August 2026.
- Check our statements on ORS 63.044 and ORS 63.047 against oregonlegislature.gov, the official page, which we last read in August 2026.
- Check our statements on Oregon formation fee: Filing fee, official source against sos.oregon.gov, the official page, which we last read in October 2026.
- Check our statements on Oregon Secretary of State, Corporation Division against sos.oregon.gov, the official page, which we last read in August 2026.
- Check our statements on Oregon Secretary of State, Corporation Division against sos.oregon.gov, the official page, which we last read in August 2026.
- As read November 13, 2026, Illinois Registered Agent.co shows pricing page on its site
- As read November 13, 2026, IL Registered Agent.org shows pricing page on its site
- As read November 13, 2026, Mainstay Filing shows Illinois service page on its site