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Short reply · Connecticut

3 Best Registered Agents in Connecticut (2026): The Quick Answer

Best registered agents in Connecticut for 2026: Mainstay Filing ($149 a year), Connecticut Registered Agent.co ($99 a year) and CT Registered Agent.org ($99 a year), ranked in that order. Agent prices start at $99 to $149 in year one and total $297 to $447 over three.

LLC Q and A editorial team ·

At a glance

Agent required?
Yes, the statute demands one
Statute term
Registered agent
Agent price
$99 to $149 per year
Our pick
Mainstay Filing, Connecticut Registered Agent.co then CT Registered Agent.org

Best in Connecticut, in order

Order set by our five criteria, three-year cost first.
1Top pick

1. Mainstay Filing: best for one price in all states

Annual price $149, renewal price $149

#1 in Connecticut: Mainstay Filing, because price: $149 a year in all states, $149 at renewal.

Not the lowest bill: Connecticut Registered Agent.co is $150 less over three years, in Connecticut only.

Price covers

  • Street address in the state
  • Free scans: three government mailings per year
  • Not limited to LLCs: corporations, LPs, LLPs and nonprofits as well

For

  • Same price in all fifty states
  • Fixed $149 yearly

Against

  • Yearly bill $50 higher
  • Agent only; no report filing
Mainstay Filing sitePartner link. We may earn money if you buy.
2Connecticut only

2. Connecticut Registered Agent.co: best for one-state companies

Annual price $99, renewal price $99

Connecticut Registered Agent.co ranks second since a Connecticut-only company pays $297 for three years.

Price covers

  • In-state address
  • Scans of legal papers

For

  • Smaller annual price than our #1
  • Annual price $99, renewal price $99

Against

  • Connecticut only
  • The annual report falls to you
Connecticut Registered Agent.co sitePartner link. We may earn money if you buy.
3Connecticut only

3. CT Registered Agent.org: best for another local option

Annual price $99, renewal price $99

CT Registered Agent.org ranks third since a Connecticut-only company pays $297 for three years.

Same published prices as Connecticut Registered Agent.co, so the order between them is close.

Price covers

  • In-state address
  • Scans of legal papers

For

  • Smaller annual price than our #1
  • Annual price $99, renewal price $99

Against

  • Connecticut only
  • The annual report falls to you
CT Registered Agent.org sitePartner link. We may earn money if you buy.

Comparison

#ServiceYear 1RenewalTotal, 3 yearsIncludes
1Mainstay Filing$149$149/yr$447street address in the state; Free scans: three government mailings per year; Not limited to LLCs: corporations, LPs, LLPs and nonprofits as wellMainstay Filing sitePartner link. We may earn money if you buy.
2Connecticut Registered Agent.co$99$99/yr$297In-state address; scans of legal papersConnecticut Registered Agent.co sitePartner link. We may earn money if you buy.
3CT Registered Agent.org$99$99/yr$297In-state address; scans of legal papersCT Registered Agent.org sitePartner link. We may earn money if you buy.
Prices as of November 13, 2026. State fees are in the checklist below.

Key questions

Must the LLC name a registered agent?

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

Law: Conn. Gen. Stat. § 34-243n. cga.ct.gov (October 2026) is the source of record

Who can be the agent?

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

Meeting the rule makes the role free.

Agent price per year?

Recommended services charge $99 to $149 annually, $297 to $447 across three years.

Any agent, same state fees.

Why have an agent?

Receives legal papers and state notices for the company in Connecticut.

Ask how fast the agent forwards what arrives. What service of process means

What does the state bill each year?

One recurring filing, the annual report, comes once a year at $80. On the state's calendar it comes on or before March 31, and we suggest filing early.

business.ct.gov (October 2026) is the source of record

Why this order?

Mainstay Filing scores best on chores removed from your list, which is 26% of the total.

62% of the total is three-year price plus chores removed from your list.

Only the first pick works in all fifty states.

Method

Connecticut agent requirements

ItemRule or amountSource
LLC filing fee$120business.ct.gov (October 2026) is the source of record
Registered agentYes, the statute demands onecga.ct.gov (October 2026) is the source of record
Annual report$80 every yearbusiness.ct.gov (October 2026) is the source of record
Three-year state total$280Sum of the rows above
Three-year total = filing + report in year 2 + report in year 3 + minimum tax (if any). Fees without a fixed amount, like newspaper notices, are not summed.

More replies

May an owner serve as agent?

Yes, if you meet the state's rules on who may serve and the address, shown above.

Which addresses are accepted?

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?

Mainstay Filing will run $447, Connecticut Registered Agent.co will run $297, CT Registered Agent.org will run $297

Where do the numbers come from?

Official Connecticut sources for the state side, published prices for the service side.

Is a service required?

No law requires a service; it is a paid convenience.

Best registered agent in Connecticut?

Mainstay Filing, because one $149-a-year account works in whichever state the LLC registers. Then Connecticut Registered Agent.co and CT Registered Agent.org.

Sources

  1. Reference line for Connecticut Secretary of the State, drawn from business.ct.gov and confirmed August 2026, as noted by our editors
  2. Reference line for Connecticut Secretary of the State, drawn from business.ct.gov and confirmed August 2026, as noted by our editors
  3. Reference line for Connecticut yearly filing: Annual report, drawn from business.ct.gov and confirmed October 2026, as noted by our editors
  4. Reference line for Connecticut report due date, drawn from cga.ct.gov and confirmed August 2026, as noted by our editors
  5. Reference line for Connecticut formation fee: Filing fee, drawn from business.ct.gov and confirmed October 2026, as noted by our editors
  6. Reference line for Connecticut formation fee: Filing fee, drawn from business.ct.gov and confirmed October 2026, as noted by our editors
  7. Mainstay Filing Connecticut service page, read November 13, 2026
  8. Connecticut Registered Agent.co pricing page, read November 13, 2026
  9. CT Registered Agent.org pricing page, read November 13, 2026