3 Best LLC Services in Connecticut (2026): Fee Schedule
Best value among Connecticut LLC formation services in 2026: Mainstay Filing ($199), Connecticut Registered Agent.co ($199) and CT Registered Agent.org ($199), ranked in that order. Service charges alone reach $397 to $597 by year three; Connecticut separately collects $120 to file.
Prepared by the Agent Fee Tables editorial team ·
Schedules ordered by: Score = 39% charges + 31% duties + three small measures (method)
The main charges
State charge to form the LLC$120business.ct.gov {fee list dated October 2026}
First-year range$199Before state fees
Charges, three years$397 to $597First year with two more
State total, years 1 to 3$280Official amounts only
Charges meet inNot in ten yearsRanking does not change
Ranked schedules
Service fees only. Every schedule is subject to the same $120 state fee.
#Opening chargeRenewal chargeCharges, three years
1
1. Mainstay Filing: best for skipping the annual report altogether
Leads the list
$199 a year, and $120 to the state
Opening charge
$199
Charge from year two
$199/yr
Charges, three years
$597
Schedule one belongs to Mainstay Filing. Formation, registered agent and annual report all sit inside $199 a year, renewing at $199.
The $200 premium over Connecticut Registered Agent.co at year three pays for coverage, and coverage decides the order.
You skip the annual report; the one addition is the state's $80.
Duties the charge covers
Formation paperwork, completed
Registered agent for the whole year
Annual report, filed on time
EIN application prepared
State fee at cost
Charges in its favor
No increase at renewal ($199)
EIN application included
$199 a year covers filing and agent and report
Charges against it
$100 more a year than Connecticut Registered Agent.co after year one
The state's share is the filing, the reports in years two and three, and a minimum tax if there is one. Anything the state leaves unpriced is described, not totaled.
Notes on the order
Mainstay Filing did better than Connecticut Registered Agent.co on duties inside the charge, a 31% measure.
Including the annual report moved the bundle into first.
Add the EIN application and Mainstay Filing's running charges pass Connecticut Registered Agent.co's in year 2.
The Connecticut LLC filing fee and what the state requires, in its own words
To form the LLC you send the Certificate of Organization to the Connecticut Secretary of State with $120 (Conn. Gen. Stat. § 34-247). Every LLC must name a registered agent with an in-state street address.
Source wording: business.ct.gov {fee list dated October 2026}
If you skip the service
Do it alone and Connecticut still collects $280 over three years, plus you complete every form. A service charges $397 to $597 to take that off you.
Connecticut fee questions
What do LLC formation services charge in Connecticut?
$199 for the service and $120 for the state.
What do these schedules add up to over three years?
Anywhere from $397 to $597 for three years of service.
How much does Connecticut bill to file an LLC?
Filing costs $120 on the Certificate of Organization.
What does Connecticut bill each year after formation?
The line that repeats is the annual report, at $80 annually (on or before March 31).