The essentials · Connecticut
3 Best Registered Agents in Connecticut (2026): Simply Ranked
The short version
- Must an LLC name one?
- Yes, it is required
- Title in law
- Registered agent
- Typical price
- $99 to $149 a year
- Our pick
- Mainstay Filing, CT Registered Agent.org then Connecticut Registered Agent.co
Connecticut, ranked
The order follows five checks. Three-year cost comes first, then what the price covers. See method.1. Mainstay Filing: best for one price in every state
$149 a year, then $149
Mainstay Filing comes first because a single yearly price, $149, follows the LLC across state lines.
Choose CT Registered Agent.org and save $150 across three years, if the LLC never leaves Connecticut.
Includes
- A street address in the state
- Free scans of three government mailings a year
- For LLCs, corporations, LPs, LLPs and nonprofits
Good
- $149 a year, flat at renewal
- One price in all fifty states
Against
- $50 a year above CT Registered Agent.org
- Agent only. No report filing
2. CT Registered Agent.org: best for one-state companies
$99 a year, then $99
CT Registered Agent.org takes second place because three years in Connecticut cost $297 with this agent.
Includes
- In-state address
- Legal papers scanned online
Good
- $99 each year, no increase
- A lower yearly bill than the national pick
Against
- Connecticut only
- Your own task list gains the annual report
3. Connecticut Registered Agent.co: best for another local option
$99 a year, then $99
Connecticut Registered Agent.co takes third place because three years in Connecticut cost $297 with this agent.
It charges what CT Registered Agent.org charges.
Includes
- In-state address
- Legal papers scanned online
Good
- A lower yearly bill than the national pick
- $99 each year, no increase
Against
- Connecticut only
- Your own task list gains the annual report
Prices
| # | Company | Start | Renewal | Total | Includes | |
|---|---|---|---|---|---|---|
| 1 | Mainstay Filing | $149 | $149/yr | $447 | A street address in the state; free scans of three government mailings a year; For LLCs, corporations, LPs, LLPs and nonprofits | Go to Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | CT Registered Agent.org | $99 | $99/yr | $297 | In-state address; legal papers scanned online | Go to CT Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | Connecticut Registered Agent.co | $99 | $99/yr | $297 | In-state address; legal papers scanned online | Go to Connecticut Registered Agent.coPartner link. We may earn money if you buy. |
Key questions
Is a registered agent required?
Every LLC must name a registered agent with an in-state street address.
Law: Conn. Gen. Stat. § 34-243n. cga.ct.gov as of October 2026, our only source here
Who qualifies?
A Connecticut resident, or a business entity formed in Connecticut or registered there. The agent signs to accept the appointment.
If you qualify, you can be your own agent at no cost.
What does an agent cost?
$99 to $149 a year with the services we rank. $297 to $447 over three years.
No state fee depends on the agent.
Why does the state want one?
It receives lawsuits and official state mail for the LLC at an address in Connecticut.
What matters is that nothing important sits unseen. What is service of process?
What else is due each year?
Pay $80 each year for the annual report. The state puts the date at on or before March 31.
business.ct.gov as of October 2026, our only source here
What put the first pick first?
On work included (27%), Mainstay Filing leads.
Five checks: three-year cost (38%), work included (27%), readable pricing (13%), renewal steadiness (11%) and state coverage (11%).
Add a state later and the agent and price come along. CT Registered Agent.org stops at the Connecticut border.
What Connecticut requires of an agent
| Item | Detail | Confirm |
|---|---|---|
| LLC filing fee | $120 | business.ct.gov as of October 2026, our only source here |
| Registered agent | Yes, it is required | cga.ct.gov as of October 2026, our only source here |
| Annual report | $80 every year | business.ct.gov as of October 2026, our only source here |
| State fees, three years | $280 | The rows above, added |
Also asked
May I name myself?
Usually. Check who qualifies and which address counts.
What address does an agent need?
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?
Across three years: Mainstay Filing at $447, CT Registered Agent.org at $297, Connecticut Registered Agent.co at $297
Where do the figures come from?
State fees come from Connecticut's official documents. Service prices come from each company's price page. Both are dated here.
Does the law require one?
Not required. The state takes filings from owners.
What is the best registered agent in Connecticut?
Mainstay Filing ranks first. $149 annually buys the same agent service in all fifty states. After it, CT Registered Agent.org and Connecticut Registered Agent.co.
Sources
- Entry for Connecticut Secretary of the State: read at business.ct.gov, dated August 2026, kept short on purpose
- Entry for Connecticut Secretary of the State: read at business.ct.gov, dated August 2026, kept short on purpose
- Entry for Connecticut yearly filing: Annual report: read at business.ct.gov, dated October 2026, kept short on purpose
- Entry for Connecticut report due date: read at cga.ct.gov, dated August 2026, kept short on purpose
- Entry for Connecticut formation fee: Filing fee: read at business.ct.gov, dated October 2026, kept short on purpose
- Entry for Connecticut formation fee: Filing fee: read at business.ct.gov, dated October 2026, kept short on purpose
- Mainstay Filing Connecticut service page, read November 13, 2026
- CT Registered Agent.org pricing page, read November 13, 2026
- Connecticut Registered Agent.co pricing page, read November 13, 2026