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Filing MapperRoutes through every state's LLC paperwork, priced leg by leg.

Registered agent guide · Connecticut

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

Plotting a registered agent in Connecticut for 2026, the route we recommend runs Mainstay Filing ($149 a year), Connecticut Registered Agent.co ($99 a year) and CT Registered Agent.org ($99 a year). No Connecticut LLC gets by without a registered agent. Add up the state's yearly tolls and the figure is $80, ranking 36th of 50.

Surveyed by the Filing Mapper team

Connecticut route markers

36th

of 50 when a year of tolls is added

Mile 1 is the lightest toll. Open the 50-state route map

Registered agent required
Yes
Survey of cga.ct.gov, October 2026
Annual report
$80 / yr
The checkpoint closes, in the state's words: on or before March 31. Survey of business.ct.gov, October 2026
State toll, one year
$80
One year of state tolls

Route services for Connecticut

How the stops were ordered: cost over three years, steps covered, renewal, Connecticut fit, fee labeling (method).

1. Mainstay Filing: best for owners who expect to grow

Our lead pick$149/yr to begin, $149/yr later

Stop one, Mainstay Filing: a single $149 agent fare that goes along if the company crosses into another state.

Three laps with it cost $150 more than with Connecticut Registered Agent.co; coverage is weighted 27%, and the extra stops it handles make up the difference.

The fare covers

  • Connecticut registered office, address supplied
  • If papers are served on the company, they are scanned the same business day at no cost
  • Letters from government offices are scanned free, the first three each year
  • The same service runs for corporations, partnerships and nonprofits

On the plus side

  • Fare $149, renewal fare $149
  • One fare on every route

On the minus side

  • $50 a year above Connecticut Registered Agent.co
  • Report filing rides with the formation package, not this ticket
Visit Mainstay FilingPartner link. We may earn money if you buy.

2. Connecticut Registered Agent.co: best for a business with one state on the map

One state only$99/yr to begin, $99/yr later

Connecticut Registered Agent.co sits at stop 2 because a flat $99 each year, and papers served on the company are scanned and forwarded.

The fare covers

  • Genuine office address in Connecticut
  • Papers served are scanned into your account

On the plus side

  • $99 yearly, no step up
  • Costs less per lap than Mainstay Filing

On the minus side

  • Stops at the state line
  • The annual report checkpoint is not cleared for you
Visit Connecticut Registered Agent.coPartner link. We may earn money if you buy.

3. CT Registered Agent.org: best for a nearby agent

One state only$99/yr to begin, $99/yr later

CT Registered Agent.org sits at stop 3 because a flat $99 each year, and papers served on the company are scanned and forwarded.

Connecticut Registered Agent.co charges the same fares.

The fare covers

  • Genuine office address in Connecticut
  • Papers served are scanned into your account

On the plus side

  • Costs less per lap than Mainstay Filing
  • $99 yearly, no step up

On the minus side

  • Stops at the state line
  • The annual report checkpoint is not cleared for you
Visit CT Registered Agent.orgPartner link. We may earn money if you buy.

Fares in a row

StopProviderYearly rateRenewal rateProvider cost, three years
1Mainstay Filing$149$149/yr$447Visit Mainstay FilingPartner link. We may earn money if you buy.
2Connecticut Registered Agent.co$99$99/yr$297Visit Connecticut Registered Agent.coPartner link. We may earn money if you buy.
3CT Registered Agent.org$99$99/yr$297Visit CT Registered Agent.orgPartner link. We may earn money if you buy.

Provider fare pages, read November 12, 2026. State tolls stay put with any agent.

Agent fares and state tolls by year

Each agent fare is paired with the state tolls that repeat (the annual report beginning in year two). The opening fee is not in the total.

$160 in state tolls plus $447 paid to Mainstay Filing makes $607 over 3 years.

Connecticut and the stops on either side of it

MileStateYearly state fees
34thIllinois$75
34thNew Jersey$75
36thConnecticut$80
37thMaine$85
38thNew Hampshire$100

The full route map measures every state the same way.

Connecticut registered agent rules in the state's own words

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.

Who may be named: A Connecticut resident, or a business entity formed in Connecticut or registered there. The agent signs to accept the appointment. Source of the rule: Conn. Gen. Stat. § 34-243n.

Keeping a Connecticut LLC on the road, 2026

Mail on the annual report reaches your registered agent; the stop costs $80 every year and closes on or before March 31.

What put the first stop first

Mainstay Filing won the lead on steps the service takes over, worth 27% of the total; Connecticut Registered Agent.co came next.

Reach moved it ahead of Connecticut Registered Agent.co.

Questions along the way

Does every Connecticut LLC have to carry a registered agent?

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

Who is allowed to serve as the registered agent on a Connecticut route?

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

What does registered agent service cost per year for Connecticut?

The agents on this route charge $99 to $149 a year.

What does the state toll an LLC every year?

$80 a year by our one-year measure, which is the annual report ($80 every year).

Which registered agents are on this route?

Mainstay Filing ($149 a year), Connecticut Registered Agent.co ($99 a year) and CT Registered Agent.org ($99 a year), from the first stop to the last.

Which registered agent should I take?

Start at Mainstay Filing: $149 per year here and the same elsewhere, with renewal at $149. Further along, Connecticut Registered Agent.co and CT Registered Agent.org.

Keep traveling

Survey markers for this route

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