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Foreign registration watchlists / Connecticut

3 Best Foreign Registration Services in Connecticut (2026): Prices Tracked

The best-value foreign registration services for Connecticut in 2026 are Mainstay Filing ($199), Connecticut Registered Agent.co ($199) and CT Registered Agent.org ($199), ranked in that order. On top of Connecticut's $120, three years of service run $397 to $497.
Tracked by the Filing Price Watch editorial team

Ordered by: Best value first, using our five measures

The short version

State registration fee $120 business.ct.gov (pulled October 2026, noted here)
Opening prices $199 Provider charges only
Years 1 to 3 combined $397 to $497 Opening year and two more
Government charges over 3 years $280 Left out of the ordering
Cost lines meet in Lines stay apart No service overtakes another

Connecticut watchlist

Services are ordered by value, and every price comes from a company page. The $120 state fee is kept outside the prices.

1
Best value

1. Mainstay Filing: best for adding states as you grow

$199 on top of Connecticut's $120; renews at $149

Price in year 1 $199
Price after year 1 $149/yr
Three-year spend $497

In Connecticut, Mainstay Filing is the best value because $199 to file, nothing for the agent in year one, and one price in all states.

Spend $100 more than at Connecticut Registered Agent.co across three years and the repeating filings are no longer yours.

Agent service from year two: $149 a year, in any state.

Price covers

  • Registration done for you
  • Registered agent is free in year one
  • A price that holds across states

Holds up

  • Same fee wherever you register
  • The first agent year is paid
  • $199 above the state fee

Weak spots

  • $50 more each year for the agent
Go to Mainstay Filing Partner link. We may earn money if you buy.
2
Home-state provider

2. Connecticut Registered Agent.co: best for a low-cost registration

$199 on top of Connecticut's $120; renews at $99

Price in year 1 $199
Price after year 1 $99/yr
Three-year spend $397

Next up, Connecticut Registered Agent.co: it charges $199 to register and covers a year of agent service, then $99 a year.

Price covers

  • The Connecticut registration filing
  • A year of agent service to begin with

Holds up

  • Then $99 a year
  • $199 plus the state fee
  • First agent year included

Weak spots

  • Connecticut only, so the home state needs its own agent
Go to Connecticut Registered Agent.co Partner link. We may earn money if you buy.
3
Home-state provider

3. CT Registered Agent.org: best for another in-state registrant

$199 on top of Connecticut's $120; renews at $99

Price in year 1 $199
Price after year 1 $99/yr
Three-year spend $397

Next up, CT Registered Agent.org: it charges $199 to register and covers a year of agent service, then $99 a year.

Price for price, it matches Connecticut Registered Agent.co.

Price covers

  • The Connecticut registration filing
  • A year of agent service to begin with

Holds up

  • $199 plus the state fee
  • First agent year included
  • Then $99 a year

Weak spots

  • Connecticut only, so the home state needs its own agent
Go to CT Registered Agent.org Partner link. We may earn money if you buy.

Running total by year

Place Service After year 1 After year 2 After year 3 After year 5
1 Mainstay Filing $199 $348 $497 $795
Go to Mainstay Filing Partner link. We may earn money if you buy.
2 Connecticut Registered Agent.co $199 $298 $397 $595
Go to Connecticut Registered Agent.co Partner link. We may earn money if you buy.
3 CT Registered Agent.org $199 $298 $397 $595
Go to CT Registered Agent.org Partner link. We may earn money if you buy.

Company price pages as of November 13, 2026, added up year by year. Ranked by running total, the order stays put for ten years.

Pick your own number of years

Totals for 1 to 5 years. The state fees are left out because every service owes the same ones.
Spend for 3 years: Mainstay Filing $497, Connecticut Registered Agent.co $397, CT Registered Agent.org $397. Lowest of the totals: Connecticut Registered Agent.co.

Government charges

Item Amount Source
Filing to register the foreign LLC $120 business.ct.gov (pulled October 2026, noted here)
Annual report $80 business.ct.gov (pulled October 2026, noted here)
State side, 3 years $280 Our total

The state's share is worked out from three pieces: what it charges to file, what it charges for the next two reports, and any minimum tax. Anything without a fixed price, newspaper notices for instance, is left out of that figure.

How first place was won

The 29% measure filings covered by the price separated the top two.

Many states for one price beat Connecticut Registered Agent.co's lower renewal.

Connecticut foreign LLC registration fee and rules, as written by the state

An LLC from another state has to register in Connecticut before doing business here. You file the Foreign Registration Statement, Limited Liability with the Connecticut Secretary of the State, Business Services Division and pay $120. Send along certificate of existence (certificate of good standing) from the state of formation no more than 90 days.

What staying unregistered can cost: the fees it would have paid.

Official text: business.ct.gov (pulled October 2026, noted here)

The do-it-yourself total

No service means three years of state fees at $280. Hiring one adds $397 to $497 in the same period.

Questions and answers

How much does it cost to register a foreign LLC with Connecticut?

$120 in state fees, and these services add $199.

What do these services cost over three years?

By year three these services have cost $397 to $497.

What form registers the LLC?

The registration is Foreign Registration Statement, Limited Liability, filed with the Connecticut Secretary of the State, Business Services Division.

Does Connecticut ask for a certificate from the home state?

Yes, no more than 90 days old: certificate of existence (certificate of good standing) from the state of formation.

What recurring filing comes after registration?

It is the annual report, at $80.

In what year does one service become pricier than another?

There is no crossover inside ten years.

Which foreign registration service is the best value for Connecticut?

On our five measures the Connecticut order is Mainstay Filing, Connecticut Registered Agent.co and CT Registered Agent.org, with Mainstay Filing ahead on filings covered by the price.

Also tracked

Source trail

  1. Where Connecticut Secretary of the State comes from: business.ct.gov, pulled August 2026.
  2. Where Connecticut Secretary of the State comes from: business.ct.gov, pulled August 2026.
  3. Where Connecticut yearly filing: Annual report comes from: business.ct.gov, pulled October 2026.
  4. Where Connecticut report due date comes from: cga.ct.gov, pulled August 2026.
  5. Where Connecticut formation fee: Filing fee comes from: business.ct.gov, pulled October 2026.
  6. Where Connecticut formation fee: Filing fee comes from: business.ct.gov, pulled October 2026.
  7. Where Foreign LLC forms and fees comes from: business.ct.gov, pulled October 2026.
  8. Where Foreign Registration Statement form comes from: business.ct.gov, pulled October 2026.
  9. Where Foreign investigations penalties comes from: business.ct.gov, pulled October 2026.
  10. Where Who can be an agent comes from: business.ct.gov, pulled October 2026.
  11. Where Foreign annual report forms and comes from: business.ct.gov, pulled October 2026.
  12. Mainstay Filing Connecticut service page, pulled November 13, 2026
  13. Connecticut Registered Agent.co pricing page, pulled November 13, 2026
  14. CT Registered Agent.org pricing page, pulled November 13, 2026