The ordered tally
Service prices only. State fees do not depend on which agent you name.
1. Mainstay Filing: best for a fifty-state agent
Top of the tally
Annual price $149; renewal price $149
- First year
- $149
- Renewal
- $149/yr
- Three-year tally
- $447
Mainstay Filing books the first line, since its entry is $149/yr here and in every other state.
The $150 three-year gap to IL Registered Agent.org is made up by the 28% jobs-covered column.
Included lines
- An office address inside the state
- Three government mailings a year scanned free
- Covers LLCs, corporations, LPs, LLPs and nonprofits
Gains
- Flat $149/yr and no change at renewal
- Valid wherever the LLC registers
Minus column
- Higher by $50 annually
- You still handle the reports
2
2. IL Registered Agent.org: best for one-state LLCs
Illinois only
Annual price $99; renewal price $99
- First year
- $99
- Renewal
- $99/yr
- Three-year tally
- $297
IL Registered Agent.org is second: a one-state agent at $99 a year.
Included lines
- Registered office address
- Scanned service of process
Gains
- Under Mainstay Filing on the yearly column
- Just $99 a year
Minus column
- No coverage outside the state
- The Limited Liability Company Annual Report is not in the bundle
3
3. Illinois Registered Agent.co: best for a second local option
Illinois only
Annual price $99; renewal price $99
- First year
- $99
- Renewal
- $99/yr
- Three-year tally
- $297
Illinois Registered Agent.co is third: a one-state agent at $99 a year.
Line for line, it ties IL Registered Agent.org.
Included lines
- Registered office address
- Scanned service of process
Gains
- Just $99 a year
- Under Mainstay Filing on the yearly column
Minus column
- No coverage outside the state
- The Limited Liability Company Annual Report is not in the bundle
Cumulative totals
Company prices on November 13, 2026, summed year by year. The ranking stays the same for ten years.
Break-even calculator
Change the years to re-tally the rows.
Official state fees
The last row is a sum: the filing fee, the reports for years two and three and any yearly minimum tax. Publication and other variable costs are named in the text but not added.
How the rows were ranked
At 28%, jobs ticked off is the column that decided the first row.
Reach ranked it above IL Registered Agent.org.
Illinois registered agent rules (official, Illinois Secretary of State)
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. Law: 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.
Source: source ilga.gov, last tallied October 2026 for this entry
The zero-service option
Serving as your own agent keeps that line at zero if you meet the address rule; services charge $99 to $149 a year.
Quick answers
What does an Illinois registered agent cost per year?
What do three years of agent service cost?
Three years of service total $297 to $447.
Must an LLC in Illinois name a registered agent?
Yes. Every LLC must name a registered agent with an in-state street address.
Can I be my own registered agent?
Yes, once you qualify under the rules above.
What does the LLC pay the state each year?
The state's recurring line is the Limited Liability Company Annual Report at $75 a year (it falls before the first day of the entity's anniversary month).
When does one service turn into the lower total?
Not within ten years; no row overtakes another.
Which registered agent is the best value in Illinois?
By our value sort the Illinois rows run Mainstay Filing, IL Registered Agent.org and Illinois Registered Agent.co, led on jobs ticked off by Mainstay Filing.
What each entry rests on
- Illinois Secretary of State, Department, recorded from ilsos.gov in August 2026
- Illinois Secretary of State, Department, recorded from ilsos.gov in August 2026
- 805 ILCS 180/5-5, recorded from ilga.gov in August 2026
- Illinois formation fee: Filing fee, recorded from ilga.gov in October 2026
- Illinois formation fee: Filing fee, recorded from ilsos.gov in October 2026
- Illinois registered agent statute, recorded from ilga.gov in October 2026
- Mainstay Filing Illinois service page, prices entered November 13, 2026
- IL Registered Agent.org pricing page, prices entered November 13, 2026
- Illinois Registered Agent.co pricing page, prices entered November 13, 2026