Go straight to the worksheet
Formation Math LLC service costs, worked out step by step.

Registered agent worksheets · Connecticut

3 Best Registered Agents in Connecticut (2026): Worked Prices

Worked out for 2026, the best-value registered agents in Connecticut come to Connecticut Registered Agent.co ($99/yr), Mainstay Filing ($149/yr) and CT Registered Agent.org ($99/yr), in that order. Year one costs $99 to $149, and adding two renewals gives $297 to $447.
Worked by the Formation Math editorial team

↓ Sorted by: Cost first (42%), items covered second (28%), three smaller checks after. See the working

Results box

Agent requirement Yes cga.ct.gov (checked October 2026) as the source
Totals after one year $99 to $149 Annual bill
Three-year spread $297 to $447 Includes both renewals
Annual report $80 a year business.ct.gov (checked October 2026) as the source
Year the lines meet Never Rows keep their positions through year 10

Connecticut, ranked by value

Rows are sorted by the method. No state fee depends on the agent.

1
Highest score

1. Connecticut Registered Agent.co: best for the smallest three-year sum

$99 first year, $99 after
Year-1 price $99
Renewal price $99/yr
Sum of 3 years $297

Connecticut Registered Agent.co takes row one because an agent for one state at $99 a year.

Three-year total below Mainstay Filing earns row one.

The price buys

  • An address in the state on file
  • Scans of papers served on the LLC

Adds up

  • Lower yearly total than Mainstay Filing
  • $99 annually, no increase

Does not add up

  • Another state needs another agent
  • No assistance with the annual report
2
Nationwide

2. Mainstay Filing: best for nationwide coverage

$149 first year, $149 after
Year-1 price $149
Renewal price $149/yr
Sum of 3 years $447

Mainstay Filing fills row 2: $149 a year here and exactly $149 in any other state.

Three years cost $150 more here than at Connecticut Registered Agent.co, and cost carries 42% of the score.

The price buys

  • A street address in the state
  • Three government mailings per year, scanned for free
  • Works for LLCs, corporations, LPs, LLPs and nonprofits

Adds up

  • Works in every state
  • $149 a year, flat at renewal

Does not add up

  • $50 more a year than Connecticut Registered Agent.co
  • Does not file the yearly report
3
Single-state plan

3. CT Registered Agent.org: best for a local back-up

$99 first year, $99 after
Year-1 price $99
Renewal price $99/yr
Sum of 3 years $297

CT Registered Agent.org is row 3: an agent for one state at $99 a year.

Its prices equal Connecticut Registered Agent.co's in every column.

The price buys

  • An address in the state on file
  • Scans of papers served on the LLC

Adds up

  • $99 annually, no increase
  • Lower yearly total than Mainstay Filing

Does not add up

  • Another state needs another agent
  • No assistance with the annual report

Running sum by year

No. Provider Year 1 total Total at year 2 Total at year 3 Total at year 5
1 Connecticut Registered Agent.co $99 $198 $297 $495 Visit Connecticut Registered Agent.co Partner link. We may earn money if you buy.
2 Mainstay Filing $149 $298 $447 $745 Visit Mainstay Filing Partner link. We may earn money if you buy.
3 CT Registered Agent.org $99 $198 $297 $495 Visit CT Registered Agent.org Partner link. We may earn money if you buy.

Company prices from November 13, 2026, summed year by year. The totals keep one order for ten years.

Worksheet calculator

The calculator adds year one and the renewals for every row once you choose the years.

3 years of fees add to Connecticut Registered Agent.co $297, Mainstay Filing $447, CT Registered Agent.org $297. Lowest of the totals: Connecticut Registered Agent.co.

Connecticut fee schedule

Term Value Where it comes from
Cost to form $120 business.ct.gov (checked October 2026) as the source
Annual report $80 every year business.ct.gov (checked October 2026) as the source
State side, 3 years $280 Calculated from the rows above

Our state figure adds three things: the filing, two years of reports and a minimum tax where there is one. Variable costs like publication stay out.

The working behind Connecticut

Connecticut Registered Agent.co wins three-year total, worth 42%, with Mainstay Filing close behind.

$297 over three years for Connecticut Registered Agent.co, which saves $150 compared with Mainstay Filing.

Connecticut registered agent rules, from the source (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. Law cited: 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 (checked October 2026) as the source

If you skip the service

Acting as your own registered agent adds nothing if you qualify. Every row above bills $99 to $149 a year for the in-state address.

Connecticut price questions, answered

What does a registered agent in Connecticut cost per year?

About $99 to $149 yearly.

What do three years of agent service cost?

Year one plus two renewals gives $297 to $447.

Does Connecticut require a registered agent for an LLC?

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

Can the owner be the registered agent?

Yes, when you qualify under the rules listed here.

What does the state collect from the LLC each year?

The recurring item is the annual report, $80 annually (on or before March 31).

In what year does one service pass another in total cost?

No break-even inside ten years.

Which registered agent is best value in Connecticut?

Connecticut Registered Agent.co scores first. Mainstay Filing and CT Registered Agent.org follow.

Keep working

Registered agent worksheets, all 50 states Best registered agents overall The method

Inputs and sources

  1. Connecticut Secretary of the State comes from business.ct.gov (August 2026).
  2. Connecticut Secretary of the State comes from business.ct.gov (August 2026).
  3. Connecticut yearly filing: Annual report comes from business.ct.gov (October 2026).
  4. Connecticut report due date comes from cga.ct.gov (August 2026).
  5. Connecticut formation fee: Filing fee comes from business.ct.gov (October 2026).
  6. Connecticut formation fee: Filing fee comes from business.ct.gov (October 2026).
  7. Connecticut Registered Agent.co pricing page, read on November 13, 2026 for the inputs
  8. Mainstay Filing Connecticut service page, read on November 13, 2026 for the inputs
  9. CT Registered Agent.org pricing page, read on November 13, 2026 for the inputs