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Founder Mentor Guide

Walkthrough 2 · Connecticut

Connecticut Registered Agent Walkthrough (2026): 6 Stages and the 3 Best Agents

Here is the short answer for naming a registered agent in Connecticut in 2026: Mainstay Filing ($149 a year), Connecticut Registered Agent.co ($99 a year) and CT Registered Agent.org ($99 a year), ranked from first to last. You are 6 short stages away from a properly named registered agent.

Advice from the Founder Mentor Guide mentors

The short version

The requirement
Yes
cga.ct.gov, last viewed October 2026
Yearly cost of the agents we recommend
$99 to $149 a year
Pulled from each company's price page
Annual report
$80 a year
business.ct.gov, last viewed October 2026
Walkthrough stages
6
In order

You will walk away able to

  • What Connecticut requires of a registered agent
  • Who qualifies, and the address test
  • Getting the agent listed
  • The agents we picked

Our shortlist for Connecticut

The mentors' five criteria are on how we score, and they decide the order.

Our call

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

Best overallFirst year $149, second year $149

Mainstay Filing takes first place, and the reason is that you pay $149 a year here and the identical amount in any state you add later.

Compared with Connecticut Registered Agent.co, you spend $150 more over three years and file less yourself.

What you get

  • A registered office in Connecticut
  • Papers served on the company are scanned for you, no charge
  • Up to three government mailings a year are scanned for free
  • Also works for nonprofits, corporations, LPs and LLPs

What works

  • Good in every state
  • $149 each year, no increase

What to watch

  • Higher by $50 a year
  • Report filing needs the formation package
Visit Mainstay FilingPartner link. We may earn money if you buy.

Our call

2. Connecticut Registered Agent.co: best for owners based in the state

One-state planFirst year $99, second year $99

Pick number 2 is Connecticut Registered Agent.co, where $99 a year buys you a Connecticut agent who keeps an office in the state.

What you get

  • A Connecticut street address
  • Legal papers scanned and posted

What works

  • Price $99; renews at $99
  • Beats Mainstay Filing on the yearly bill

What to watch

  • Serves Connecticut alone
  • Annual report is left out of the price
Visit Connecticut Registered Agent.coPartner link. We may earn money if you buy.

Our call

3. CT Registered Agent.org: best for a second Connecticut choice

One-state planFirst year $99, second year $99

Pick number 3 is CT Registered Agent.org, where $99 a year buys you a Connecticut agent who keeps an office in the state.

On price it is a tie with Connecticut Registered Agent.co.

What you get

  • A Connecticut street address
  • Legal papers scanned and posted

What works

  • Beats Mainstay Filing on the yearly bill
  • Price $99; renews at $99

What to watch

  • Serves Connecticut alone
  • Annual report is left out of the price
Visit CT Registered Agent.orgPartner link. We may earn money if you buy.

3 services, compared

#ServiceAnnual priceRenewal priceThree-year total
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.
Company prices as listed on November 13, 2026. No agent moves the state fees.

How a Connecticut agent gets set up

  1. Stage 1

    What Connecticut expects from an agent

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

    Check it yourself: cga.ct.gov, last viewed October 2026

  2. Stage 2

    Find out who can serve

    A Connecticut resident, or a business entity formed in Connecticut or registered there. The agent signs to accept the appointment. The rule comes from Conn. Gen. Stat. § 34-243n.

  3. Stage 3

    The address rule

    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.

    A service keeps your home address off public records.

  4. Stage 4

    Serve yourself or bring in a pro

    Qualify and you may serve yourself. A professional from our list runs $99 to $149 per year.

  5. Stage 5

    Report the agent's details

    The Certificate of Organization asks for the agent's name and address, and the Connecticut Secretary of State also handles the change filing when you switch.

    Check it yourself: business.ct.gov, last viewed October 2026

  6. Stage 6

    Check the record each year

    Send the annual report on time ($80, on or before March 31) and the agent record stays right.

    Check it yourself: business.ct.gov, last viewed October 2026

What the agent costs in Connecticut

Line itemPayeeSum
The agentThe provider$99 to $149 a year
From year twoThe provider$99 to $149 a year
Annual reportState office$80 every year
Whatever goes to Connecticut is an official fee you can verify on the pages listed below. The three-year row combines the filing, two later reports and a minimum tax where there is one; service prices stay out of it.

Why the list runs this way

On work taken off your desk (32% of the score) finished first, with right behind.

Reach put it ahead of Connecticut Registered Agent.co.

Connecticut questions answered

Will Connecticut insist on a registered agent for your LLC?

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

Can I be my own registered agent?

Yes, if you pass the eligibility and address tests in stages 2 and 3.

Can I change my registered agent later?

Yes; the Connecticut Secretary of State takes change filings, and stage 5 says what to send.

What does a registered agent cost in Connecticut?

Figure on $99 to $149 a year.

What does the LLC pay the state each year?

$80, every year, for the annual report.

Which registered agent would you choose?

Phone Mainstay Filing, because one annual fee of $149 follows the company when it expands, and renewal stays $149. After that come Connecticut Registered Agent.co and CT Registered Agent.org.

Where we got the facts

  1. Connecticut Secretary of the State, Business Services Division: go straight to business.ct.gov, checked August 2026.
  2. Connecticut Secretary of the State, Business Services Division: go straight to business.ct.gov, checked August 2026.
  3. Connecticut yearly filing: Annual report: fee, official source: go straight to business.ct.gov, checked October 2026.
  4. Connecticut report due date: go straight to cga.ct.gov, checked August 2026.
  5. Connecticut formation fee: Filing fee, official source: go straight to business.ct.gov, checked October 2026.
  6. Connecticut formation fee: Filing fee, official source: go straight to business.ct.gov, checked October 2026.
  7. We opened Mainstay Filing's Connecticut service page on November 13, 2026 for the prices
  8. We opened Connecticut Registered Agent.co's pricing page on November 13, 2026 for the prices
  9. We opened CT Registered Agent.org's pricing page on November 13, 2026 for the prices