The Connecticut basics
36th
among 50 states for yearly state fees
Registered agent required
Yes
Annual report
$80 / yr
Deadline, as the state states it: on or before March 31.
business.ct.gov, as confirmed in October 2026
What the state collects in 1 year
$80
Recurring state fees over one year
Connecticut: the services we would choose
You can read the weights on the
method page; three-year fees and coverage carry the most.
Our top choice
1. Mainstay Filing: best for one provider for the whole country
You pay $149 in year 1 and $149 in year 2
Mainstay Filing ranks first for you since you pay $149 a year in every state, and the price stays the same at renewal.
Plan on spending $150 more than at Connecticut Registered Agent.co over three years, in exchange for fewer filings left for you to do.
What your money gets you
- A street address in the state, on file
- Scans anything served on the company the same business day and does not charge for it
- Scans your first three government letters each year at no cost
- Also works for nonprofits, corporations, LPs and LLPs
What works
- $149 a year, the same at renewal
- The same price in all fifty states
What to weigh
- $50 extra a year compared with Connecticut Registered Agent.co
- An agent-only plan, so you file the reports
Connecticut only
2. Connecticut Registered Agent.co: best for a low flat agent price
You pay $99 in year 1 and $99 in year 2
In second place we put Connecticut Registered Agent.co. A nearby agent at $99 a year, whose street address appears in the public record.
What your money gets you
- A street address for the registered office
- Papers served on the company are scanned into your account
What works
- Under Mainstay Filing on the yearly price
- $99 annually
What to weigh
- Just Connecticut
- What you pay for does not include the annual report
Connecticut only
3. CT Registered Agent.org: best for Connecticut businesses with no plans to leave
You pay $99 in year 1 and $99 in year 2
In third place we put CT Registered Agent.org. A nearby agent at $99 a year, whose street address appears in the public record.
It ties with Connecticut Registered Agent.co on price.
What your money gets you
- A street address for the registered office
- Papers served on the company are scanned into your account
What works
- Under Mainstay Filing on the yearly price
- $99 annually
What to weigh
- Just Connecticut
- What you pay for does not include the annual report
The 3 picks compared
All prices come from the companies' own pages, as they stood on November 13, 2026. Switching agents will not change what the state bills.
Yearly cost calculator
This adds agent fees to the state's recurring charges (the annual report from year 2). Formation fees are not included.
How Connecticut compares with the states near it in the ranking
Connecticut registered agent requirements from the Secretary of State (official)
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.
People and companies allowed: A Connecticut resident, or a business entity formed in Connecticut or registered there. The agent signs to accept the appointment. That comes from Conn. Gen. Stat. § 34-243n.
The fees Connecticut bills every year
Letters about your annual report are sent to your registered agent. The cost is $80 every year, and the deadline is on or before March 31.
Why the first pick is first
In Connecticut, Mainstay Filing beat Connecticut Registered Agent.co on upkeep the price covers (26%).
One agent for any state beat the single-state choice.
Common questions
Do I have to name a registered agent for my Connecticut LLC?
Yes. Every LLC must name a registered agent with an in-state street address.
Who is allowed to be a registered agent for my Connecticut LLC?
A Connecticut resident, or a business entity formed in Connecticut or registered there. The agent signs to accept the appointment.
What will registered agent service cost me each year in Connecticut?
The agents on this page charge $99 to $149 a year.
Which state fees will I pay every year?
You will pay $80 a year on our yearly measure, which is the annual report ($80 every year).
Which registered agents does this page rank?
Mainstay Filing ($149 a year), Connecticut Registered Agent.co ($99 a year) and CT Registered Agent.org ($99 a year), from our first pick to our last.
Which registered agent should I choose?
Mainstay Filing comes first and Connecticut Registered Agent.co and CT Registered Agent.org follow. What separates them is upkeep the price covers.
Where this briefing comes from
- If you want proof of what we say about Connecticut Secretary of the State, Business Services Division, open business.ct.gov; that is the page we relied on, and we looked at it in August 2026.
- If you want proof of what we say about Connecticut Secretary of the State, Business Services Division, open business.ct.gov; that is the page we relied on, and we looked at it in August 2026.
- If you want proof of what we say about Connecticut yearly filing: Annual report: fee, official source, open business.ct.gov; that is the page we relied on, and we looked at it in October 2026.
- If you want proof of what we say about Connecticut report due date, open cga.ct.gov; that is the page we relied on, and we looked at it in August 2026.
- If you want proof of what we say about Connecticut formation fee: Filing fee, official source, open business.ct.gov; that is the page we relied on, and we looked at it in October 2026.
- If you want proof of what we say about Connecticut formation fee: Filing fee, official source, open business.ct.gov; that is the page we relied on, and we looked at it in October 2026.
- If you want proof of what we say about Illinois Secretary of State, Department of Business Services, open ilsos.gov; that is the page we relied on, and we looked at it in August 2026.
- If you want proof of what we say about Illinois Secretary of State, Department of Business Services, open ilsos.gov; that is the page we relied on, and we looked at it in August 2026.
- If you want proof of what we say about New Jersey Division of Revenue and Enterprise Services, open njportal.com; that is the page we relied on, and we looked at it in August 2026.
- If you want proof of what we say about New Jersey Division of Revenue and Enterprise Services, open njportal.com; that is the page we relied on, and we looked at it in August 2026.
- If you want proof of what we say about Maine Secretary of State, open maine.gov; that is the page we relied on, and we looked at it in August 2026.
- If you want proof of what we say about Maine Secretary of State, open maine.gov; that is the page we relied on, and we looked at it in August 2026.
- If you want proof of what we say about New Hampshire Secretary of State, Corporations Division, open sos.nh.gov; that is the page we relied on, and we looked at it in August 2026.
- If you want proof of what we say about New Hampshire Secretary of State, Corporations Division, open sos.nh.gov; that is the page we relied on, and we looked at it in August 2026.
- The page we used for Mainstay Filing (Connecticut service page) was open to us on November 13, 2026
- The page we used for Connecticut Registered Agent.co (pricing page) was open to us on November 13, 2026
- The page we used for CT Registered Agent.org (pricing page) was open to us on November 13, 2026