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Foreign registration cost calculators + Connecticut

3 Best Foreign Registration Services in Connecticut (2026): Cost Calculator

Our 2026 calculation puts Mainstay Filing ($199), Connecticut Registered Agent.co ($199) and CT Registered Agent.org ($199), in that order, at the top of Connecticut foreign registration services. Add $397 to $497 of service charges to the $120 registration fee in Connecticut for a three-year result.
Calculated by the Formation Calc editorial team

Result order: Cost 41% plus coverage 27% plus three smaller terms (see the formula)

Results in brief

Foreign filing fee$120business.ct.gov {input read October 2026, shown in full}
Year-1 results$199Provider fees only
Year-3 results$397 to $497Renewals included
State side through year 3$280Independent of the service
Totals cross atDoes not occurOrder holds for ten years

The Connecticut calculations

Every input is copied from the company's own pricing page. The $120 state fee has to be added separately.
1

1. Mainstay Filing: best for one fee wherever you register

Best value
Year-1 input$199
Input for year 2 on$149/yr
Result at year 3$497
$199 for registration, $149 for the agent after that

Top result: Mainstay Filing. Registering in Connecticut adds $199 to state fees, with the opening agent year free.

The $100 premium over Connecticut Registered Agent.co at year three buys coverage, and coverage decides the order.

Agent renewal, any state: $149 yearly.

Inputs covered

  • Registration paperwork, filed
  • Registered agent free in year one
  • Good in all fifty states

Adds up well

  • Same fee wherever you register
  • $199 for the registration
  • No agent charge in year one

Adds up badly

  • A higher agent renewal ($149)
2

2. Connecticut Registered Agent.co: best for the smallest agent figure

One-state service
Year-1 input$199
Input for year 2 on$99/yr
Result at year 3$397
$199 for registration, $99 for the agent after that

Result 2: Connecticut Registered Agent.co. $199 above the state fee and $99 per later year.

Inputs covered

  • Registration paperwork, filed
  • Agent service for the first year

Adds up well

  • $199 plus the state fee
  • Agent service at no cost in year one
  • $99 yearly from year two

Adds up badly

  • Connecticut only, so the home state needs its own agent
3

3. CT Registered Agent.org: best for adding one state

One-state service
Year-1 input$199
Input for year 2 on$99/yr
Result at year 3$397
$199 for registration, $99 for the agent after that

Result 3: CT Registered Agent.org. $199 above the state fee and $99 per later year.

The year-one and renewal inputs both equal Connecticut Registered Agent.co's.

Inputs covered

  • Registration paperwork, filed
  • Agent service for the first year

Adds up well

  • $199 plus the state fee
  • Agent service at no cost in year one
  • $99 yearly from year two

Adds up badly

  • Connecticut only, so the home state needs its own agent

Results over time

RankServiceResult, year 1Result, year 2Result, year 3Result, year 5
1Mainstay Filing$199$348$497$795Open Mainstay FilingPartner link. We may earn money if you buy.
2Connecticut Registered Agent.co$199$298$397$595Open Connecticut Registered Agent.coPartner link. We may earn money if you buy.
3CT Registered Agent.org$199$298$397$595Open CT Registered Agent.orgPartner link. We may earn money if you buy.
Company prices from November 13, 2026, summed year by year. None of the totals cross in ten years.

Break-even test

Results for 1 to 5 years. State fees are not an input here because every service owes the same ones.
3 years of fees calculate to Mainstay Filing $497, Connecticut Registered Agent.co $397, CT Registered Agent.org $397. Lowest of the results: Connecticut Registered Agent.co.

Connecticut fee list

InputAmountSource
Cost to register$120business.ct.gov {input read October 2026, shown in full}
Annual report$80business.ct.gov {input read October 2026, shown in full}
Three-year state total$280Filing, reports and any tax
State result = filing fee + the two later reports + any minimum tax. Open-ended costs get a mention but no number.

How the result came out

Filing work in the price put Mainstay Filing first. That term is 27% of the formula, and calculated three-year cost, renewal change, break-even year and input clarity make up the remainder.

Several states at one price beat Connecticut Registered Agent.co's lower renewal.

How Connecticut describes the foreign LLC registration fee and rules

A company from another state that works in Connecticut registers with the Connecticut Secretary of the State, Business Services Division using the Foreign Registration Statement, Limited Liability and $120. Include certificate of existence (certificate of good standing) from the state of formation from the past 90 days.

The price of not registering: back fees covering the unregistered stretch.

Quoted text: business.ct.gov {input read October 2026, shown in full}

State fees only

Without a service the three-year input is just $280 in state fees. Hiring help adds $397 to $497 to it.

Quick answers

What is the registration fee for a foreign LLC in Connecticut?

$120 to the state, and a provider's fee of $199 on top.

What do these services calculate to over three years?

Year one plus two renewals calculates to $397 to $497.

Which form registers the LLC?

Complete Foreign Registration Statement, Limited Liability and deliver it to the Connecticut Secretary of the State, Business Services Division.

Does the Connecticut filing need a document from the home state?

Yes, one less than 90 days old: certificate of existence (certificate of good standing) from the state of formation.

What recurring filing follows registration?

The annual report, charged at $80.

When does one service pass another in total cost?

No crossing within ten years; no service passes another.

Which foreign registration service calculates best for Connecticut?

Mainstay Filing calculates best, followed by Connecticut Registered Agent.co and CT Registered Agent.org.

Next calculators

Input sources

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