Registered agent cost calculators + Connecticut
3 Best Registered Agents in Connecticut (2026): Cost Calculator
Result order: Best value first, from our five-term calculation
Calculator summary
Connecticut: results, best value first
1. Mainstay Filing: best for companies that may expand
Leads the resultsMainstay Filing comes first because the input stays $149 a year no matter where the company registers next.
Pay $150 above CT Registered Agent.org across three years and the repeating filings stop being your concern.
Inputs covered
- An office address inside the state
- Up to three government mailings a year, scanned free
- Covers LLCs, corporations, LPs, LLPs and nonprofits
Adds up well
- The same price in all fifty states
- $149 a year, no change at renewal
Adds up badly
- Adds $50 extra annually
- Does not file the yearly report
2. CT Registered Agent.org: best for LLCs that never leave one state
Connecticut focusPosition 2 is CT Registered Agent.org: $99 yearly, with a street address inside the state on file.
Inputs covered
- A physical in-state office
- Papers served on the LLC scanned to your account
Adds up well
- $99 a year, no change at renewal
- A smaller yearly bill than Mainstay Filing
Adds up badly
- Connecticut only
- No help with the annual report
3. Connecticut Registered Agent.co: best for a second local option
Connecticut focusPosition 3 is Connecticut Registered Agent.co: $99 yearly, with a street address inside the state on file.
No difference in price from CT Registered Agent.org.
Inputs covered
- A physical in-state office
- Papers served on the LLC scanned to your account
Adds up well
- $99 a year, no change at renewal
- A smaller yearly bill than Mainstay Filing
Adds up badly
- Connecticut only
- No help with the annual report
Results over time
| Rank | Service | Result, year 1 | Result, year 2 | Result, year 3 | Result, year 5 | |
|---|---|---|---|---|---|---|
| 1 | Mainstay Filing | $149 | $298 | $447 | $745 | Open Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | CT Registered Agent.org | $99 | $198 | $297 | $495 | Open CT Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | Connecticut Registered Agent.co | $99 | $198 | $297 | $495 | Open Connecticut Registered Agent.coPartner link. We may earn money if you buy. |
Break-even test
State fees with sources
| Input | Amount | Source |
|---|---|---|
| Filing to form the LLC | $120 | business.ct.gov {input read October 2026, shown in full} |
| Annual report | $80 every year | business.ct.gov {input read October 2026, shown in full} |
| State side, 3 years | $280 | Inputs added together |
The working behind Connecticut
Mainstay Filing did better than CT Registered Agent.org on filing work in the price, a 27% term.
Coverage put it ahead of CT Registered Agent.org.
The Connecticut registered agent rule as the state states it (Connecticut Secretary of State)
Every LLC must name a registered agent with an in-state street address.
A Connecticut resident, or a business entity formed in Connecticut or registered there. The agent signs to accept the appointment. Check Conn. Gen. Stat. § 34-243n.
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.
As written: cga.ct.gov {input read October 2026, shown in full}
The no-service result
Go without a service and the agent input is zero, provided you qualify; state charges stay as they were. Services run $99 to $149 a year.
About these results
What does a Connecticut registered agent charge per year?
$99 to $149 a year on this page.
What do three years of agent service cost?
$297 to $447 across the services, not counting state fees.
Is a registered agent a must for a Connecticut LLC?
Yes, it does. Every LLC must name a registered agent with an in-state street address.
Can the owner be the registered agent?
You can, provided you meet both the address and eligibility rules.
What does the state charge the LLC each year?
Annual report input: $80 a year, and the statute puts the deadline at on or before March 31.
When does one service pass another in total cost?
They hold one order for ten years.
Which registered agent calculates best in Connecticut?
Result one is Mainstay Filing, then CT Registered Agent.org, then Connecticut Registered Agent.co.
Input sources
- Input for Connecticut Secretary of the State comes from business.ct.gov, entered August 2026.
- Input for Connecticut Secretary of the State comes from business.ct.gov, entered August 2026.
- Input for Connecticut yearly filing: Annual report comes from business.ct.gov, entered October 2026.
- Input for Connecticut report due date comes from cga.ct.gov, entered August 2026.
- Input for Connecticut formation fee: Filing fee comes from business.ct.gov, entered October 2026.
- Input for Connecticut formation fee: Filing fee comes from business.ct.gov, entered October 2026.
- November 13, 2026 entry: Mainstay Filing Connecticut service page
- November 13, 2026 entry: CT Registered Agent.org pricing page
- November 13, 2026 entry: Connecticut Registered Agent.co pricing page