3 Best Registered Agents in Illinois (2026): Fee Schedule
We rank Illinois registered agents for 2026 as Mainstay Filing ($149/yr), IL Registered Agent.org ($99/yr) and Illinois Registered Agent.co ($99/yr), best value first. Agents charge $99 to $149 for year one, and $297 to $447 across three years.
Prepared by the Agent Fee Tables editorial team ·
Schedules ordered by: Score = 39% charges + 31% duties + three small measures (method)
The main charges
Is a registered agent required?Yesilga.gov {fee list dated October 2026}
Year-one fees$99 to $149A year of service
Billed over three years$297 to $447First year with two more
Limited Liability Company Annual Report$75 yearlyilsos.gov {fee list dated October 2026}
Charges meet inNo equal pointOrder holds to year 10
Illinois: schedules, best value first
Every charge is copied from the company's own pricing page. A different agent leaves the state fee as it was.
#Opening chargeRenewal chargeCharges, three years
1
1. Mainstay Filing: best for companies that may expand
Leads the list
$149 opening, $149 at renewal
Opening charge
$149
Renewal charge
$149/yr
Charges, three years
$447
Schedule one belongs to Mainstay Filing. One account serves all states, at $149 a year and $149 at renewal.
Paying $150 above IL Registered Agent.org across three years takes the repeating filings off your plate.
Duties the charge covers
An office address inside the state
Up to three government mailings a year, scanned free
Covers LLCs, corporations, LPs, LLPs and nonprofits
Charges in its favor
Constant $149 per year
Valid in every state
Charges against it
IL Registered Agent.org charges $50 less each year
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
Mainstay Filing did better than IL Registered Agent.org on duties inside the charge, a 31% measure.
Coverage put it ahead of IL Registered Agent.org.
What Illinois requires of a registered agent (Illinois Secretary of State), in the state's own words
Every LLC must name a registered agent with an in-state street address.
An Illinois resident, or a business authorized to do business in Illinois. The LLC cannot act as its own agent. The governing statute is 805 ILCS 180/1-35.
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.
Quoted text: ilga.gov {fee list dated October 2026}
The no-service total
An eligible owner can name themselves and pay no agent fee, while state fees stay the same. The schedules above charge $99 to $149 a year for a Illinois address and someone to accept legal papers.
Illinois fee questions
What does an Illinois registered agent charge per year?
$99 to $149 a year on this page.
What do three years of agent service cost?
$297 to $447 in service fees, with state fees on top.
Does the state insist that an Illinois LLC have a registered agent?
Yes, it does. Every LLC must name a registered agent with an in-state street address.
May the owner act as the registered agent?
If you qualify, yes; the requirements section has the rules.
What does the state charge the LLC every year?
Limited Liability Company Annual Report: $75 a year, deadline worded by the state as before the first day of the entity's anniversary month.
When does one schedule pass another in total charges?
No crossing within ten years; no schedule passes another.
Which registered agent is the best value in Illinois?
Mainstay Filing, which wins on duties inside the charge. IL Registered Agent.org and Illinois Registered Agent.co follow.