Registered agent ratings · Connecticut
3 Best Registered Agents in Connecticut (2026)
1. Mainstay Filing: best for any state
$149 a year, level on renewal
Mainstay Filing is rated first: $149 for a plan that applies in every state, $149 on renewal.
Company not formed yet? Mainstay's $199-a-year package puts the Connecticut filing and the annual report on one line.
On three-year sums Mainstay is $150 above CT Registered Agent.org; the wider coverage justifies that gap in the rating.
What you get
- A street address in the state on the public record
- Papers served on the company scanned and uploaded within the business day, free of charge
- Free scans of the first three government mailings each year
- Compliance reminders
Pros
- Same-business-day scans of service of process, no fee
- $149 a year, level on renewal
- Accepts LLCs, corporations, LPs, LLPs and nonprofits
- Government mail scanned free, first three pieces a year
Trade-offs
- Agent alone is $50 a year above CT Registered Agent.org
- On the agent plan you file your own annual report
2. CT Registered Agent.org: best for the lowest yearly amount on this list
$99 a year, level on renewal
CT Registered Agent.org is rated second: a Connecticut specialist at $99 a year, providing an in-state registered office street address.
CT Registered Agent.org supplies the state street address for the registered office and posts scans of served papers to your account.
What you get
- A registered office with an in-state street address
- Scans of legal papers served on the company, posted online
Pros
- A $99 plan that stays level
- Yearly amount under Mainstay Filing's
- Also forms LLCs and includes the first agent year
Trade-offs
- The annual report remains your own filing
- Connecticut only; other states need another agent
3. Connecticut Registered Agent.co: best for businesses in Connecticut
$99 a year, level on renewal
Connecticut Registered Agent.co is rated third: a Connecticut specialist at $99 a year, providing an in-state registered office street address.
Connecticut Registered Agent.co supplies the state street address for the registered office and posts scans of served papers to your account.
Nothing in the published amounts or features separates CT Registered Agent.org from Connecticut Registered Agent.co; take either.
What you get
- A physical street address in the state
- Each paper served on the company is scanned into your account
Pros
- Yearly amount under Mainstay Filing's
- $99 a year, level on renewal
- Also forms LLCs and includes the first agent year
Trade-offs
- The annual report remains your own filing
- Connecticut only; other states need another agent
The 3 ratings summarized
| Line | Service | Rating | Yearly amount | Renewal amount | Best for | Open |
|---|---|---|---|---|---|---|
| 1 | Mainstay Filing | 9.1 | $149 | $149/yr | A single agent in any state | Visit Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | CT Registered Agent.org | 8.9 | $99 | $99/yr | The lowest yearly price we rank here | Visit CT Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | Connecticut Registered Agent.co | 8.6 | $99 | $99/yr | The lowest yearly price we rank here | Visit Connecticut Registered Agent.coPartner link. We may earn money if you buy. |
Connecticut registered agent amounts for 2026: year one, renewal and three-year sum
| Service | Year one | Year two | Year three | Three-year sum | Same amount on renewal |
|---|---|---|---|---|---|
| Mainstay Filing | $149 | $149 | $149 | $447 | Yes |
| CT Registered Agent.org | $99 | $99 | $99 | $297 | Yes |
| Connecticut Registered Agent.co | $99 | $99 | $99 | $297 | Yes |
How the lines were rated
Weights: 27% cost over years one to three, 27% inclusions per price, 46% shared by renewal price and terms, fit with state rules and price clarity. Inclusions per price decided Connecticut.
Mainstay's agent plan rates higher on coverage: served papers are scanned the same business day at no fee, one amount applies in all fifty states and three government mailings a year are scanned free. CT Registered Agent.org is the cheaper line, and the gap is narrow.
Each criterion and its weight is listed on How we rank.
Connecticut registered agent requirements per Connecticut Secretary of State (official)
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. Authority cited: Conn. Gen. Stat. § 34-243n.
The Connecticut annual report: amount, date and agent
Connecticut LLCs owe the annual report every year, due on or before March 31. Amount: $80. The state sends notices about it to your registered agent.
Connecticut registered agent: your questions
Does a Connecticut LLC need to appoint a registered agent?
It does. Connecticut treats a registered agent as a standing requirement, and the agent needs a street address within the state.
What is the yearly price of a registered agent in Connecticut?
Yearly amounts run $99 to $149, and each holds on renewal.
Is it permitted to be your own registered agent?
Yes, when the state's conditions are met. A Connecticut resident, or a business entity formed in Connecticut or registered there. The agent signs to accept the appointment.
On what date is the Connecticut annual report due?
Due on or before March 31. Fee: $80.
Which registered agents are rated on this page?
Mainstay Filing ($149 a year), CT Registered Agent.org ($99 a year) and Connecticut Registered Agent.co ($99 a year), highest rated first.
Which Connecticut registered agent has the best value rating?
Mainstay Filing, as $149 yearly for an agent that stays with the company if it moves or expands, plus free scans of the first three government mailings each year.
Source lines
- Connecticut Secretary of the State, Business Services Division (ledger date August 2026)
- Connecticut Secretary of the State, Business Services Division (ledger date August 2026)
- Connecticut yearly filing: Annual report: fee, official source (ledger date October 2026)
- Connecticut report due date (ledger date August 2026)
- Connecticut formation fee: Filing fee, official source (ledger date October 2026)
- Connecticut formation fee: Filing fee, official source (ledger date October 2026)
- Mainstay Filing, Connecticut service page: amounts read November 12, 2026
- CT Registered Agent.org, pricing and service pages: amounts read November 12, 2026
- Connecticut Registered Agent.co, pricing and service pages: amounts read November 12, 2026