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Business Basics LabLLC paperwork, measured state by state.

Lab sheet 3 · Connecticut

Foreign LLC Registration, Connecticut (2026): 5 Procedures and the 3 Best Services

Mainstay Filing ($199), CT Registered Agent.org ($199) and Connecticut Registered Agent.co ($199) measured best, in that order, for registering an LLC formed elsewhere in Connecticut in 2026. 5 procedures cover the filing, the $120 fee and the obligations that follow.

Recorded by the Business Basics Lab staff ·

The short version

State fee to register
$120business.ct.gov (observed October 2026)
Home-state certificate
90 daysHow recent it must be
Annual filing
$80Annual report
Three years of state fees
$280Registration plus reports
Procedures
5One at a time

After reading you will know

  • When registration is required
  • The official form and fee
  • What it costs to stay registered
  • How the readings compare

Best reading

Who we would engage in Connecticut

Five weighted criteria set the order (see how we measure); three-year cost and procedures performed count most.
Highest result

1. Mainstay Filing: best for a second state and beyond

$199 plus fees; $149 a year after

Mainstay Filing comes first since registration measures $199 plus state fees, with year one of the registered agent at no cost.

The premium over CT Registered Agent.org across three years is $100, which the 28% weight on procedures performed outweighs.

From year two the agent reads $149 a year, whichever state is used.

What the price performs

  • The filing is performed for you
  • No fee for the registered agent in year one
  • All fifty states

Measured strengths

  • Any state, one fee
  • A service fee of $199
  • Agent covered for year one

Measured limits

  • $50 extra a year for the agent
Visit Mainstay FilingPartner link. We may earn money if you buy.
In-state service

2. CT Registered Agent.org: best for a budget registration

$199 plus fees; $99 a year after

CT Registered Agent.org follows in second place: $199 above the state fee, first agent year included, then $99 a year.

What the price performs

  • Registration filing
  • Agent service for one year

Measured strengths

  • $99 yearly from year two
  • $199 and the state fee
  • A free first agent year

Measured limits

  • Serves only Connecticut
Visit CT Registered Agent.orgPartner link. We may earn money if you buy.
In-state service

3. Connecticut Registered Agent.co: best for another Connecticut candidate

$199 plus fees; $99 a year after

Connecticut Registered Agent.co follows in third place: $199 above the state fee, first agent year included, then $99 a year.

Its prices equal CT Registered Agent.org's, so either is acceptable.

What the price performs

  • Registration filing
  • Agent service for one year

Measured strengths

  • $199 and the state fee
  • A free first agent year
  • $99 yearly from year two

Measured limits

  • Serves only Connecticut
Visit Connecticut Registered Agent.coPartner link. We may earn money if you buy.

Readings and prices at a glance

#ServiceFirst yearFrom year twoThree-year total
1Mainstay Filing$199$149/yr$497Visit Mainstay FilingPartner link. We may earn money if you buy.
2CT Registered Agent.org$199$99/yr$397Visit CT Registered Agent.orgPartner link. We may earn money if you buy.
3Connecticut Registered Agent.co$199$99/yr$397Visit Connecticut Registered Agent.coPartner link. We may earn money if you buy.
Prices are recorded from each company's own site on November 13, 2026. Every row also requires the $120 state fee.

How registration works with Connecticut

  1. Procedure 1: Does the rule apply?

    When an out-of-state LLC does business in Connecticut, it first registers as a foreign LLC. Skipping registration has recorded consequences: A charge for earlier fees should be expected.

    Specimen: business.ct.gov (observed October 2026)

  2. Procedure 2: Request proof of good standing

    The filing includes certificate of existence (certificate of good standing) from the state of formation, not older than 90 days.

    TipOrder it last so that it is current at filing.

  3. Procedure 3: Find a registered agent whose address is in Connecticut

    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.

    TipThe services above supply one.

    Specimen: cga.ct.gov (observed October 2026)

  4. Procedure 4: Submit the Foreign Registration Statement, Limited Liability

    Send the Connecticut Secretary of the State, Business Services Division the finished Foreign Registration Statement, Limited Liability along with the $120 fee.

    Specimen: business.ct.gov (observed October 2026)

  5. Procedure 5: Maintain the registration

    Expect the annual report and a fee of $80 (between January 1 and March 31).

Costs, procedure by procedure

Cost itemPaid toCost
Foreign registrationState office$120
Annual reportState office$80
Optional serviceService company$199 in the first year
State total over three yearsState office$280
Every state amount here can be verified against the specimens below. The three-year row combines formation, two later reports and a minimum tax where one exists, and it never includes service prices.

The reasoning behind the ranking

prevailed on procedures the price performs (28% of the reading), with close behind.

With the LLC active in two states, coverage decided the order.

Review questions on Connecticut

How large is Connecticut's fee for a foreign LLC?

$120 at the state office. The ranked services add $199.

Which form do I file to register?

Foreign LLCs file this form with 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?

A charge for earlier fees should be expected.

What is due after registering?

Once registered, the LLC owes the annual report, charged at $80 each time.

Which service should handle the registration?

The order of the readings is Mainstay Filing, CT Registered Agent.org and Connecticut Registered Agent.co. Mainstay Filing is first because $199 above the state fee, a registered agent at no charge in year one, then $149 a year.

Related sheets

Specimens and records

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