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LLC SchoolhousePlain LLC lessons, one state at a time.

Class 3 · Connecticut

Foreign LLC Registration in Connecticut (2026): a 5-Step Lesson and the 3 Best Services

Report card for registering an LLC from another state in Connecticut in 2026: Mainstay Filing ($199), Connecticut Registered Agent.co ($199) and CT Registered Agent.org ($199), from first place to third. Connecticut charges $120 to register, and this lesson takes you through it in 5 steps.

Taught by the LLC Schoolhouse editors

Key facts

What the state charges$120Checked against business.ct.gov, October 2026
Home-state certificate90 daysAge limit
Report fee$80Annual report
Three-year state total$280State charges only
How many steps5In order

In this lesson

  • When an out-of-state LLC must register with Connecticut
  • How the filing works
  • The recurring filing
  • How the graded picks compare

Connecticut: the services that earned a grade

Three-year cost and the number of steps a price takes off your list weigh the most; the grading page lists all five criteria.
Start here

1. Mainstay Filing: best for one provider for both states

$199 plus fees; $149 a year later

Mainstay Filing gets our top grade for Connecticut: $199 beyond the state fee, with the registered agent free in year one and $149 a year afterward.

Over three years it costs $100 more than Connecticut Registered Agent.co, but the grade rewards the extra steps it takes care of.

Agent service beyond the first year is $149 a year.

What the price covers

  • Filing with the state
  • The registered agent costs nothing in year one
  • Any state at one price

Marks in its favor

  • One price anywhere
  • Year-one agent included
  • $199 plus the state fee

Where it loses points

  • Connecticut Registered Agent.co's agent costs $50 less each renewal
Connecticut specialist

2. Connecticut Registered Agent.co: best for an inexpensive Connecticut filing

$199 plus fees; $99 a year later

Next on the report card comes Connecticut Registered Agent.co, graded second: $199 on top of the state fee to register, then $99 each year.

What the price covers

  • The registration filing
  • One year of agent service

Marks in its favor

  • A year of agent service is included
  • $199 to register
  • A low $99 renewal

Where it loses points

  • Connecticut only; your home state needs its own agent
Connecticut specialist

3. CT Registered Agent.org: best for a local filer

$199 plus fees; $99 a year later

Next on the report card comes CT Registered Agent.org, graded third: $199 on top of the state fee to register, then $99 each year.

Connecticut Registered Agent.co and this service charge the same.

What the price covers

  • The registration filing
  • One year of agent service

Marks in its favor

  • A year of agent service is included
  • A low $99 renewal
  • $199 to register

Where it loses points

  • Connecticut only; your home state needs its own agent

The 3 graded picks compared

#ServiceFirst yearFrom year twoThree-year total
1Mainstay Filing$199$149/yr$497Visit Mainstay FilingPartner link. We may earn money if you buy.
2Connecticut Registered Agent.co$199$99/yr$397Visit Connecticut Registered Agent.coPartner link. We may earn money if you buy.
3CT Registered Agent.org$199$99/yr$397Visit CT Registered Agent.orgPartner link. We may earn money if you buy.
Posted prices, read November 13, 2026. The state fee ($120) is not counted.

Registering in Connecticut, one step at a time

  1. Step
    1

    Confirm that you must register

    If your LLC was formed elsewhere and works in Connecticut, it must first register there as a foreign LLC. Here is what happens if you skip it: Expect a bill for fees from before you registered.

    Where this comes from: Checked against business.ct.gov, October 2026

  2. Step
    2

    Order the document from your home state

    Attach certificate of existence (certificate of good standing) from the state of formation, not more than 90 days.

    Order it last so it is still fresh when you file.

  3. Step
    3

    Line up a Connecticut registered agent

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

    Our graded picks all serve as the registered agent.

    Where this comes from: Checked against cga.ct.gov, October 2026

  4. Step
    4

    Fill out and file the Foreign Registration Statement, Limited Liability

    Pay $120 when you deliver the form to the Connecticut Secretary of the State, Business Services Division.

    Where this comes from: Checked against business.ct.gov, October 2026

  5. Step
    5

    Plan for the recurring filing

    A registered foreign LLC files the annual report ($80), between January 1 and March 31.

What each step costs in Connecticut

StepPaid toAmount
Filing to registerState office$120
Annual reportState office$80
A service, if you use oneService$199 to start
Three-year state totalState office$280
State fees come from the official sources listed in the references. For three years we count the filing, two years of reports and the minimum tax where it applies.

How we graded the Connecticut picks

edged ahead of on homework the price handles, which counts for 33%.

The company belongs to one state and works in another, which makes one provider for both the strongest choice.

Questions students ask

How much does Connecticut charge a foreign LLC to register?

$120 for the filing. Our picks add $199.

Which form do I file to register?

Look for the Foreign Registration Statement, Limited Liability; you deliver it to the Connecticut Secretary of the State, Business Services Division.

Do I need a certificate from my home state?

Yes: certificate of existence (certificate of good standing) from the state of formation, issued within 90 days of filing.

What if the LLC does business there without registering?

Expect a bill for fees from before you registered.

What is due after registering?

Step 5 covers it: the annual report for $80.

Which service should handle the registration?

Mainstay Filing, Connecticut Registered Agent.co and CT Registered Agent.org, graded from first to last.

More lessons

Class references

  1. Want to see Connecticut Secretary of the State, Business Services Division for yourself? Open business.ct.gov. We confirmed that page in August 2026 before writing the lesson.
  2. Want to see Connecticut Secretary of the State, Business Services Division for yourself? Open business.ct.gov. We confirmed that page in August 2026 before writing the lesson.
  3. Want to see Connecticut yearly filing: Annual report: fee, official source for yourself? Open business.ct.gov. We confirmed that page in October 2026 before writing the lesson.
  4. Want to see Connecticut report due date for yourself? Open cga.ct.gov. We confirmed that page in August 2026 before writing the lesson.
  5. Want to see Connecticut formation fee: Filing fee, official source for yourself? Open business.ct.gov. We confirmed that page in October 2026 before writing the lesson.
  6. Want to see Connecticut formation fee: Filing fee, official source for yourself? Open business.ct.gov. We confirmed that page in October 2026 before writing the lesson.
  7. Want to see Foreign LLC forms and fees, Business.CT.gov for yourself? Open business.ct.gov. We confirmed that page in October 2026 before writing the lesson.
  8. Want to see Foreign Registration Statement form for yourself? Open business.ct.gov. We confirmed that page in October 2026 before writing the lesson.
  9. Want to see Foreign investigations penalties for yourself? Open business.ct.gov. We confirmed that page in October 2026 before writing the lesson.
  10. Want to see Who can be an agent for yourself? Open business.ct.gov. We confirmed that page in October 2026 before writing the lesson.
  11. Want to see Foreign annual report forms and fees for yourself? Open business.ct.gov. We confirmed that page in October 2026 before writing the lesson.
  12. November 13, 2026: the Connecticut service page for Mainstay Filing
  13. November 13, 2026: the pricing page for Connecticut Registered Agent.co
  14. November 13, 2026: the pricing page for CT Registered Agent.org