3 Best Registered Agents in Connecticut (2026): Your Questions Answered
For registered agents in Connecticut, we would ask Mainstay Filing ($149 a year), Connecticut Registered Agent.co ($99 a year) and CT Registered Agent.org ($99 a year) in 2026, in that order. An agent costs $99 to $149 in the first year and $297 to $447 across three years.
Answered by the Ask About LLC editorial team ·
The short answers
Is an agent required?
Yes, the law says so
What the law calls it
Registered agent
Typical agent price
$99 to $149 a year
Our pick
Mainstay Filing, Connecticut Registered Agent.co then CT Registered Agent.org
Who should you ask in Connecticut?
The order follows our five questions: three-year cost first, then how much the price covers.
1Ask this one first
1. Mainstay Filing: best for one price in any state
Pay $149 the first year and $149 after
Why Mainstay Filing at the top? The price is $149 a year here and exactly the same in every other state.
Going with Connecticut Registered Agent.co would save $150 across three years, as long as you stay in Connecticut.
What the price covers
A street address on file here
Scans of three government letters a year, at no charge
Also handles corporations, LPs, LLPs and nonprofits
How was the bottom line figured? Add the filing fee, the next two reports and the minimum tax if the state has one. Anything with no fixed price, a newspaper notice for instance, is described above and kept out of the sum.
Questions people also ask
Is it allowed to name myself?
Often you can. If your address and status match what the state demands, nothing stands in the way.
What address does an agent need?
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.
What do the picks cost over three years?
For three years you would pay $447 at Mainstay Filing, $297 at Connecticut Registered Agent.co, $297 at CT Registered Agent.org
Are the fees official?
State fees come from Connecticut's official documents, and service fees come from each company's own pricing page. Both carry dates on this page.
Do I have to use a service?
Not at all. The state takes filings from owners directly. A service just saves you time, and it can double as your agent.
Which one do you recommend in Connecticut?
Mainstay Filing comes first: it costs $149 a year with no change by state, and renews at $149. Next are Connecticut Registered Agent.co and CT Registered Agent.org.
Sources for this answer
Ask-about note for Connecticut Secretary of the State: the state publishes it at business.ct.gov, confirmed August 2026, so you can look it up yourself
Ask-about note for Connecticut Secretary of the State: the state publishes it at business.ct.gov, confirmed August 2026, so you can look it up yourself
Ask-about note for Connecticut yearly filing: Annual report: the state publishes it at business.ct.gov, confirmed October 2026, so you can look it up yourself
Ask-about note for Connecticut report due date: the state publishes it at cga.ct.gov, confirmed August 2026, so you can look it up yourself
Ask-about note for Connecticut formation fee: Filing fee: the state publishes it at business.ct.gov, confirmed October 2026, so you can look it up yourself
Ask-about note for Connecticut formation fee: Filing fee: the state publishes it at business.ct.gov, confirmed October 2026, so you can look it up yourself
Mainstay Filing Connecticut service page, read November 13, 2026
Connecticut Registered Agent.co pricing page, read November 13, 2026
CT Registered Agent.org pricing page, read November 13, 2026