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Researched and written by the Launchwise Review editorial team
Launchwise Review

Rankings of registered agents, LLC formation and foreign registration services in all 50 states.

Launch guide · Connecticut · foreign registration

3 Best Foreign Registration Services in Connecticut (2026)

Researched and written by the Launchwise Review editorial team
For a 2026 launch in Connecticut, Launchwise Review grades foreign registration services this way: Mainstay Filing ($199), CT Registered Agent.org ($199) and Connecticut Registered Agent.co ($199). Mainstay Filing earns the top grade here: the Connecticut registration costs $199, the first registered agent year is free, and later years are $149.
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Our top pick in Connecticut

1. Mainstay Filing: best for founders working in several states

Pay $199 plus the state fee ($319 in total at checkout), then $149 a year for the agent

Our mark 9.3 out of 10

Top grade, Mainstay Filing: $199 beyond the state's fee in whichever state you enter, with year-one registered agent service free.

Your first year as agent is free; each year after that is $149, wherever you register.

It runs $100 above CT Registered Agent.org across three years; the extra paperwork it handles is worth that to us.

In the price

  • The registration filing, done for you
  • The first registered agent year at no charge
  • Free scan of served papers the same business day they arrive

Pros

  • Papers served on the company are scanned the same business day, free
  • $199 for the service, with the state fee added
  • One price in every state
  • Registered agent service is free the first year

Less good

  • The agent costs $149 a year after year one, $50 above CT Registered Agent.org
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing launch review
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Low renewal

2. CT Registered Agent.org: best for companies adding only Connecticut

Pay $199 plus the state fee, then $99 a year for the agent

Our mark 8.8 out of 10

Next up is CT Registered Agent.org: it registers the company in Connecticut for $199, first agent year included, then $99 a year.

You get an in-state street address for the registered office, and any papers served on the company are scanned into your online account.

In the price

  • Registration prepared and filed
  • One year of registered agent service to begin with

Pros

  • Covers the first year of registered agent service
  • $199 to register, plus the state fee
  • The agent costs $99 a year after the first

Less good

  • Connecticut only; the home state needs its own agent
  • EIN application costs extra ($99)
Visit CT Registered Agent.orgPartner link. We may earn money if you buy.
Read the CT Registered Agent.org launch review
3
Best for a Connecticut-only company

3. Connecticut Registered Agent.co: best for Connecticut registrations only

Pay $199 plus the state fee, then $99 a year for the agent

Our mark 8.7 out of 10

Rounding out the list is Connecticut Registered Agent.co: it registers the company in Connecticut for $199, first agent year included, then $99 a year.

You get an in-state street address for the registered office, and any papers served on the company are scanned into your online account.

Their posted prices and features match, so CT Registered Agent.org and Connecticut Registered Agent.co grade as a near tie.

In the price

  • Registration prepared and filed
  • One year of registered agent service to begin with

Pros

  • Then $99 a year to keep the agent
  • Registers the company for $199, state fee extra
  • Your first registered agent year comes at no cost

Less good

  • Connecticut only; the home state needs its own agent
  • EIN application costs extra ($99)
Visit Connecticut Registered Agent.coPartner link. We may earn money if you buy.
Read the Connecticut Registered Agent.co launch review

The 3 grades at a glance

Place Company Launch grade Service price Second year Best fit Go
1 Mainstay Filing 9.3 $199 $149/yr Founders opening a second state Visit Mainstay FilingPartner link. We may earn money if you buy.
2 CT Registered Agent.org 8.8 $199 $99/yr The lowest agent renewal on this page Visit CT Registered Agent.orgPartner link. We may earn money if you buy.
3 Connecticut Registered Agent.co 8.7 $199 $99/yr The lowest agent renewal on this page Visit Connecticut Registered Agent.coPartner link. We may earn money if you buy.
Launchwise Review assigns every grade out of 10 itself using the criteria on How we rank; no customer ratings go into it.

Connecticut foreign registration service cost in 2026: first year, renewals, three-year total

Company Year 1 Year 2 Year 3 Three years, total Agent covered, year one
Mainstay Filing $199 $149 $149 $497 Free
CT Registered Agent.org $199 $99 $99 $397 Included
Connecticut Registered Agent.co $199 $99 $99 $397 Included
Prices were copied from each company's own pages on November 12, 2026. Add Connecticut's $120 registration fee to any row; it is not in the totals.

Why Mainstay Filing grades first

At Launchwise Review, cost to launch and stay and launch paperwork handled each count for 26% of a grade, and renewal behavior, state match and price transparency split the remaining 48%. In Connecticut, launch paperwork handled made the call.

Adding a second state means dealing with two states, and one provider at one price in both earned the stronger coverage grade, ahead of CT Registered Agent.org.

Every criterion and weight is listed on How we rank.

Opening in Connecticut as a foreign LLC: fee, form and office

Your registration goes to the Connecticut Secretary of the State, Business Services Division, on the Foreign Registration Statement, Limited Liability. Budget $120 for the state. Have certificate of existence (certificate of good standing) from the state of formation in hand too, dated within 90 days of filing; Connecticut asks for it.

Calendar item for later: the annual report at $80, due between January 1 and March 31.

Before you file, get these together

  • Certificate of existence (certificate of good standing) from the state of formation, issued within 90 days of your filing date.
  • Your company's exact legal name and the date it was formed at home.
  • A registered agent with a street address in the state; every company graded on this page can serve.
  • The $120 state fee, ready to pay with the filing.
  • A calendar reminder for the annual report and its $80 fee.

What skipping Connecticut registration can cost you

Back fees for the unregistered months are due as well.

Quick answers about Connecticut foreign registration services

When does an LLC from elsewhere have to register in Connecticut?

Once it does business there.

What should I budget to bring an existing LLC into Connecticut?

The state fee is $120; add a service fee of $199.

Do I need a document from my home state first?

Yes, order certificate of existence (certificate of good standing) from the state of formation and file within 90 days of its date.

Does the foreign LLC still need a registered agent?

Yes. Keep a registered agent with a street address in the state for as long as the company is registered there.

Which foreign registration services are graded on this page?

Mainstay Filing ($199), CT Registered Agent.org ($199) and Connecticut Registered Agent.co ($199), top grade first.

Which service is the best way to register a foreign LLC in Connecticut?

Mainstay Filing, because $199 on top of the state fee, a free first year as registered agent and the same price in any state.

Related pages

Sources and dates

  1. Connecticut Secretary of the State, Business Services Division, dated August 2026
  2. Connecticut Secretary of the State, Business Services Division, dated August 2026
  3. Connecticut yearly filing: Annual report: fee, official source, dated October 2026
  4. Connecticut report due date, dated August 2026
  5. Connecticut formation fee: Filing fee, official source, dated October 2026
  6. Connecticut formation fee: Filing fee, official source, dated October 2026
  7. Foreign LLC forms and fees, Business.CT.gov, dated October 2026
  8. Foreign Registration Statement form, dated October 2026
  9. Foreign investigations penalties, dated October 2026
  10. Who can be an agent, dated October 2026
  11. Foreign annual report forms and fees, dated October 2026
  12. From Mainstay Filing: Connecticut service page, copied November 12, 2026
  13. From CT Registered Agent.org: pricing and service pages, copied November 12, 2026
  14. From Connecticut Registered Agent.co: pricing and service pages, copied November 12, 2026