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LLC formation price tables - Connecticut

3 Best LLC Services in Connecticut (2026): Price Table

Connecticut LLC formation services for 2026, ranked on price and coverage: Mainstay Filing ($199), CT Registered Agent.org ($199) and Connecticut Registered Agent.co ($199). Pick any entry and three years cost $397 to $597; the $120 filing fee in Connecticut is added regardless.

Compiled by the LLC Price Tables editorial team ·

Table order: Best value on top, by our five-column test

Table summary

  • Government formation fee$120business.ct.gov [read October 2026, table note]
  • First-year cells$199Provider charges alone
  • Cells at year three$397 to $597Both renewals counted
  • State total, years 1 to 3$280Official figures alone
  • CrossoverNo break-evenNothing changes rank

Connecticut table, ranked

Entries sit in value order, with prices taken from company pages. The $120 state fee stays outside the entry prices.

  1. 1. Mainstay Filing: best for never preparing the annual report

    Top of the table
    • Year-1 cell$199
    • Cell for later years$199/yr
    • Three-year cell$597

    $199 yearly plus $120 to the state

    Top of the table: Mainstay Filing. $199 a year includes the annual report and stays flat at renewal.

    Paying $200 more than CT Registered Agent.org over three years takes the recurring filings off your hands.

    The annual report is taken care of each time, with Connecticut's $80 billed at cost.

    Price buys

    • Articles of organization, filed
    • Registered agent for twelve months
    • Annual report, filed when due
    • EIN application prepared
    • Nothing added to state charges

    In its favor

    • $199 in year two
    • It prepares the EIN application
    • $199 per year, everything included

    Against it

    • $100 more a year than CT Registered Agent.org after year one
    See Mainstay FilingPartner link. We may earn money if you buy.

  2. 2. CT Registered Agent.org: best for a bare-bones start

    Connecticut specialist
    • Year-1 cell$199
    • Cell for later years$99/yr
    • Three-year cell$397

    $199 to form, $99 yearly after

    Below that, CT Registered Agent.org: the three-year cell reads $397 since renewal is only $99.

    The annual report stays your responsibility.

    Price buys

    • Formation delivered to the state office
    • Agent service for the first year

    In its favor

    • First agent year included
    • $199 on top of the state fee
    • Agent renews at $99

    Against it

    • Annual report sits outside what you pay
    • $99 extra for the EIN
    See CT Registered Agent.orgPartner link. We may earn money if you buy.

  3. 3. Connecticut Registered Agent.co: best for companies rooted in the state

    Connecticut specialist
    • Year-1 cell$199
    • Cell for later years$99/yr
    • Three-year cell$397

    $199 to form, $99 yearly after

    Below that, Connecticut Registered Agent.co: the three-year cell reads $397 since renewal is only $99.

    The annual report stays your responsibility.

    Year-one and renewal cells both equal CT Registered Agent.org's.

    Price buys

    • Formation delivered to the state office
    • Agent service for the first year

    In its favor

    • First agent year included
    • Agent renews at $99
    • $199 on top of the state fee

    Against it

    • Annual report sits outside what you pay
    • $99 extra for the EIN
    See Connecticut Registered Agent.coPartner link. We may earn money if you buy.

Cumulative cost by year

No.EntryYear 1 cellYear 2 cellYear 3 cellYear 5 cell
1Mainstay Filing$199$398$597$995See Mainstay FilingPartner link. We may earn money if you buy.
2CT Registered Agent.org$199$298$397$595See CT Registered Agent.orgPartner link. We may earn money if you buy.
3Connecticut Registered Agent.co$199$298$397$595See Connecticut Registered Agent.coPartner link. We may earn money if you buy.
Company prices from November 13, 2026, added up by year. None of the entries swap places in ten years.

Table calculator

Once you set the years, the calculator adds year one and the renewals for each entry and includes the EIN application if ticked.
Total for 3 years: Mainstay Filing $597, CT Registered Agent.org $397, Connecticut Registered Agent.co $397. Entry with the smallest total: CT Registered Agent.org.

Official state charges

ChargeCellSource
Formation charge$120business.ct.gov [read October 2026, table note]
Annual report$80 every yearbusiness.ct.gov [read October 2026, table note]
Three-year state total$280Calculated from the lines above
Each line cites the state's own page. Together they give a three-year state figure: filing, reports for years two and three, and a minimum tax where one applies.

Notes on the order

Filing work per row put Mainstay Filing first. That column is 30% of the sort, and three-year row total, renewal gap, row crossover and cell clarity make up the remainder.

Filing work per dollar tipped the balance, because the annual report comes with the price.

Add the EIN application and Mainstay Filing's cumulative cost passes CT Registered Agent.org's in year 2.

Connecticut LLC filing fee and requirements, quoted from the official source

$120 plus the Certificate of Organization, delivered to the Connecticut Secretary of State, creates the company. Every LLC must name a registered agent with an in-state street address.

Quoted text: business.ct.gov [read October 2026, table note]

The no-service cell

With no service, Connecticut still bills $280 over three years and every form lands on your desk. Services charge $397 to $597 to lift that work.

Common questions

What do LLC formation services charge in Connecticut?

The entries charge $199 up front, and the state adds $120.

What do these entries add up to over three years?

$397 to $597 across the entries, not counting state fees.

How much does Connecticut charge to file an LLC?

$120, and the document to file is the Certificate of Organization.

What does Connecticut charge each year after formation?

What recurs is the annual report, at $80 annually (on or before March 31).

Is the EIN application included in the price?

Mainstay Filing bundles it in, CT Registered Agent.org charges $99 more and Connecticut Registered Agent.co charges $99 more.

When does one entry pass another in total cost?

The entries do not swap places in the first ten years.

Which LLC formation service is the best value in Connecticut?

Top to bottom: Mainstay Filing, CT Registered Agent.org and Connecticut Registered Agent.co.

Related tables

Where this came from

  1. business.ct.gov is the reference behind Connecticut Secretary of the State, read in August 2026.
  2. business.ct.gov is the reference behind Connecticut Secretary of the State, read in August 2026.
  3. business.ct.gov is the reference behind Connecticut yearly filing: Annual report, read in October 2026.
  4. cga.ct.gov is the reference behind Connecticut report due date, read in August 2026.
  5. business.ct.gov is the reference behind Connecticut formation fee: Filing fee, read in October 2026.
  6. business.ct.gov is the reference behind Connecticut formation fee: Filing fee, read in October 2026.
  7. Mainstay Filing: Connecticut service page (read November 13, 2026)
  8. CT Registered Agent.org: pricing page (read November 13, 2026)
  9. Connecticut Registered Agent.co: pricing page (read November 13, 2026)