No.1
Best here
1. CT Registered Agent.org: best for the least expensive year among these agents
$99 yearly, no change
Score9.6out of 10
First place: CT Registered Agent.org. It concentrates on Connecticut at $99 a year and supplies an in-state street address for the registered office.
CT Registered Agent.org provides the in-state registered office and posts scans of any legal papers served there to your account.
Over three years it costs less than Mainstay Filing, and cost is one of our two most heavily weighted criteria.
In the price
- The in-state street address that the state requires
- Papers served on the company are scanned and uploaded to your account
Why pick it
- Also forms LLCs and includes the first agent year
- Costs $99 yearly, unchanged at renewal
- Costs less each year than Mainstay Filing
Weak spots
- The annual report is yours to file
- Built for Connecticut; elsewhere you need another agent
No.2
One agent, every state
2. Mainstay Filing: best for all fifty states
$149 yearly, no change
Score9.2out of 10
Second place: Mainstay Filing. The charge is $149 a year whether the company stays in one state or spreads out, and three government letters a year are scanned at no cost.
For a company not yet formed, the $199 yearly package adds the Connecticut filing and the annual report.
CT Registered Agent.org costs $150 less over three years, and Mainstay Filing trails it on that criterion.
In the price
- A registered office street address in any state you need
- Same-business-day scanning of legal papers served, free of charge
- Three government letters a year scanned without charge
- Compliance reminders
Why pick it
- Three government letters a year scanned at no charge
- $149 a year, unchanged at renewal
- Service of process on the company scanned within the same business day, no charge
- Accepts LLCs, corporations, LPs, LLPs and nonprofits
Weak spots
- The agent plan runs $50 a year above CT Registered Agent.org
- Annual report filing comes with the formation package, not the agent plan
No.3
Connecticut specialist
3. Connecticut Registered Agent.co: best for Connecticut specialists
$99 yearly, no change
Score8.9out of 10
Third place: Connecticut Registered Agent.co. It concentrates on Connecticut at $99 a year and supplies an in-state street address for the registered office.
Connecticut Registered Agent.co provides the in-state registered office and posts scans of any legal papers served there to your account.
No difference in price or features separates CT Registered Agent.org from Connecticut Registered Agent.co; choose whichever you prefer.
In the price
- A street address in the state, on the public record
- Legal papers served on the company are scanned to your account
Why pick it
- $99 a year, with no change at renewal
- Also forms LLCs and includes the first agent year
- Costs less each year than Mainstay Filing
Weak spots
- The annual report is yours to file
- Built for Connecticut; elsewhere you need another agent
The 3 rulings in brief
| Rank | Provider | Ruling score | Yearly charge | Renewal | Suited to | Link |
|---|
| 1 | CT Registered Agent.org | 9.6 | $99 | $99/yr | The lowest yearly charge on this list | Visit CT Registered Agent.orgPartner link. We may earn money if you buy. |
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| 2 | Mainstay Filing | 9.2 | $149 | $149/yr | An agent usable in all fifty states | Visit Mainstay FilingPartner link. We may earn money if you buy. |
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| 3 | Connecticut Registered Agent.co | 8.9 | $99 | $99/yr | The lowest yearly charge on this list | Visit Connecticut Registered Agent.coPartner link. We may earn money if you buy. |
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Every mark out of 10 reflects the editorial team's reading of the criteria on
How we rank, not any customer rating.
Connecticut registered agent charges in 2026: year one, renewals and the three-year total
| Provider | Year one | Year two | Year three | Total over three years | Price unchanged at renewal |
|---|
| CT Registered Agent.org | $99 | $99 | $99 | $297 | Yes |
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| Mainstay Filing | $149 | $149 | $149 | $447 | Yes |
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| Connecticut Registered Agent.co | $99 | $99 | $99 | $297 | Yes |
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Each charge was taken from the provider's own pages on November 12, 2026. Connecticut's own fees are the same whichever agent is chosen.
How the ruling was reached
Two criteria carry 31% each in this ranking, charge over three years and work taken off the founder. Renewal conduct, fit with local rules and pricing in plain sight share 38%, and in Connecticut the decisive one was charge over three years.
Over three years CT Registered Agent.org totals $297, $150 less than Mainstay Filing. A company that needs an agent only in Connecticut gains little from fifty-state reach, so the lower yearly charge carried the ruling.
Each criterion and its weight appear on How we rank.
What Connecticut requires of a registered agent (source: Connecticut Secretary of State)
Every LLC must name a registered agent with an in-state street address. The address has to be a Connecticut street address that is not a P.O. box, plus a Connecticut mailing address, which can be a P.O. box. Authority: Conn. Gen. Stat. § 34-243n.
The Connecticut annual report: its fee and due date
In Connecticut, the annual report comes due every year. $80 is payable to the state, and the deadline is on or before March 31. Notices about it are sent to your registered agent.
Questions on Connecticut registered agents
Is a Connecticut LLC obliged to appoint a registered agent?
Yes. Connecticut law expects every LLC to appoint a registered agent with a physical address in the state, and that appointment is public.
What is the going yearly rate for a Connecticut registered agent?
Yearly charges fall between $99 to $149, and every provider holds its price at renewal.
Is the owner permitted to serve as the registered agent?
Yes, when the state's conditions are met. A Connecticut resident, or a business entity formed in Connecticut or registered there. The agent signs to accept the appointment.
What is the deadline for the Connecticut annual report?
$80 goes to the state, and the filing falls due on or before March 31.
Which registered agents were heard in this ranking?
CT Registered Agent.org ($99 a year), Mainstay Filing ($149 a year) and Connecticut Registered Agent.co ($99 a year), ruled upon in that order.
Which Connecticut registered agent does the record favor?
CT Registered Agent.org, since the plan is a flat $99 a year, and papers served on the company are scanned to your account.
The record
- Connecticut Secretary of the State, Business Services Division, on the record as of August 2026
- Connecticut Secretary of the State, Business Services Division, on the record as of August 2026
- Connecticut yearly filing: Annual report: fee, official source, on the record as of October 2026
- Connecticut report due date, on the record as of August 2026
- Connecticut formation fee: Filing fee, official source, on the record as of October 2026
- Connecticut formation fee: Filing fee, official source, on the record as of October 2026
- Exhibit: CT Registered Agent.org, pricing and service pages, November 12, 2026
- Exhibit: Mainstay Filing, Connecticut service page, November 12, 2026
- Exhibit: Connecticut Registered Agent.co, pricing and service pages, November 12, 2026