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Statewise Business The state fee almanac for LLCs, sourced line by line.

Registered agent guide · Connecticut

Connecticut Registered Agents (2026): Official Rules, State Fees and the 3 Best Agents

Mainstay Filing ($149 a year), CT Registered Agent.org ($99 a year) and Connecticut Registered Agent.co ($99 a year): our 2026 order for registered agent service in Connecticut. Connecticut makes a registered agent compulsory. Recurring state fees: $80 yearly, 36th of 50.

Entry by the Statewise Business almanac desk ·

Connecticut fee schedule

36thof 50 states on yearly state feesCounted up from the least expensive. All fifty rows
Registered agent required
YesEntry from cga.ct.gov, October 2026
Annual report
$80 / yrFalls due: on or before March 31. Entry from business.ct.gov, October 2026
State fees per year
$80Per-year state bill

Our Connecticut entries

The methodology sets this order with five criteria, led by what the service charges over three years and what the price covers.

1. Mainstay Filing: best for one agent for any state

Almanac first pick$149/yr, then $149/yr

We enter Mainstay Filing first: $149 yearly here or anywhere else, renewing at $149.

Three-year service fees run $150 above CT Registered Agent.org, an amount the 28% coverage weight more than makes up.

In the price

  • A physical in-state office address
  • Papers served on the company scanned within the same business day, free
  • Your first three government letters each year, scanned free
  • Serves LLCs, corporations, LPs, LLPs and nonprofits alike

Strengths

  • $149 a year, same at renewal
  • Any state, one price

Weak points

  • Costs $50 more a year than CT Registered Agent.org
  • The plan covers the agent alone; reports stay with you
Visit Mainstay FilingPartner link. We may earn money if you buy.

2. CT Registered Agent.org: best for the smallest flat agent price

One state only$99/yr, then $99/yr

Listed second: CT Registered Agent.org, because a Connecticut-only plan at $99 a year, renewing at $99.

In the price

  • A physical Connecticut address
  • Served documents scanned and uploaded

Strengths

  • A smaller yearly bill than Mainstay Filing
  • Yearly price $99, renewal $99

Weak points

  • Connecticut only; other states need their own agent
  • Annual report is outside the price
Visit CT Registered Agent.orgPartner link. We may earn money if you buy.

3. Connecticut Registered Agent.co: best for another Connecticut option

One state only$99/yr, then $99/yr

Listed third: Connecticut Registered Agent.co, because a Connecticut-only plan at $99 a year, renewing at $99.

Its published prices are identical to CT Registered Agent.org's, so the two sit close together.

In the price

  • A physical Connecticut address
  • Served documents scanned and uploaded

Strengths

  • Yearly price $99, renewal $99
  • A smaller yearly bill than Mainstay Filing

Weak points

  • Connecticut only; other states need their own agent
  • Annual report is outside the price
Visit Connecticut Registered Agent.coPartner link. We may earn money if you buy.

Connecticut picks in one table

#EntryPrice a yearRenewalService fees over three years
1Mainstay Filing$149$149/yr$447Visit Mainstay FilingPartner link. We may earn money if you buy.
2CT Registered Agent.org$99$99/yr$297Visit CT Registered Agent.orgPartner link. We may earn money if you buy.
3Connecticut Registered Agent.co$99$99/yr$297Visit Connecticut Registered Agent.coPartner link. We may earn money if you buy.
Every price here was read on November 12, 2026. Naming a different agent leaves the state fees alone.

Upkeep calculator

Each agent's price is paired with the repeating state fees (the annual report from year two); formation fees are left out of the total.
$607 is the 3 years total with Mainstay Filing, split $160 state and $447 service.

Connecticut among its neighbors in the rank

PositionStateYearly state fees
34thIllinois$75
34thNew Jersey$75
36thConnecticut$80
37thMaine$85
38thNew Hampshire$100
All fifty rows: Registered agent rules by state.

Connecticut registered agent rules as the state states them

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.

Eligible agents: A Connecticut resident, or a business entity formed in Connecticut or registered there. The agent signs to accept the appointment. Cited law: Conn. Gen. Stat. § 34-243n.

Connecticut LLC upkeep in 2026

The annual report arrives every year at $80 (due on or before March 31). The state's reminders go to your registered agent.

How the Connecticut order was set

Of the five criteria, requirements covered (28%) is where Mainstay Filing pulled ahead of CT Registered Agent.org in Connecticut.

Fifty-state coverage outscored CT Registered Agent.org on our weights.

Connecticut FAQ

Is a registered agent compulsory in Connecticut?

It is. Every LLC must name a registered agent with an in-state street address.

Who is allowed to act as the registered agent in Connecticut?

A Connecticut resident, or a business entity formed in Connecticut or registered there. The agent signs to accept the appointment.

What does a Connecticut registered agent charge each year?

$99 to $149 a year, going by this page.

What does the state charge an LLC every year?

$80 a year on the almanac's yearly measure, which is the annual report ($80 every year).

Which registered agents does this entry list?

Mainstay Filing ($149 a year), CT Registered Agent.org ($99 a year) and Connecticut Registered Agent.co ($99 a year), with the top entry leading.

Which registered agent should I choose?

Our entry order: Mainstay Filing (the same $149 agent price in each state, so one provider can follow the company), then CT Registered Agent.org and Connecticut Registered Agent.co.

More entries

Citations for this entry

  1. Connecticut Secretary of the State, Business Services Division, from business.ct.gov, last read August 2026
  2. Connecticut Secretary of the State, Business Services Division, from business.ct.gov, last read August 2026
  3. Connecticut yearly filing: Annual report: fee, official source, from business.ct.gov, last read October 2026
  4. Connecticut report due date, from cga.ct.gov, last read August 2026
  5. Connecticut formation fee: Filing fee, official source, from business.ct.gov, last read October 2026
  6. Connecticut formation fee: Filing fee, official source, from business.ct.gov, last read October 2026
  7. Illinois Secretary of State, Department of Business Services, from ilsos.gov, last read August 2026
  8. Illinois Secretary of State, Department of Business Services, from ilsos.gov, last read August 2026
  9. New Jersey Division of Revenue and Enterprise Services, from njportal.com, last read August 2026
  10. New Jersey Division of Revenue and Enterprise Services, from njportal.com, last read August 2026
  11. Maine Secretary of State, from maine.gov, last read August 2026
  12. Maine Secretary of State, from maine.gov, last read August 2026
  13. New Hampshire Secretary of State, Corporations Division, from sos.nh.gov, last read August 2026
  14. New Hampshire Secretary of State, Corporations Division, from sos.nh.gov, last read August 2026
  15. On November 12, 2026 we recorded the Connecticut service page of Mainstay Filing
  16. On November 12, 2026 we recorded the pricing page of CT Registered Agent.org
  17. On November 12, 2026 we recorded the pricing page of Connecticut Registered Agent.co