Connecticut charges $120 to form an LLC; Massachusetts charges $500. Day-one sticker price is only part of the story, since most of the real cost comes from the annual obligations that stack up each year you keep the LLC open.

Over a rolling three-year window, Connecticut runs about $1,640 less in total state fees than Massachusetts. Whether that gap matters depends on whether you actually operate in one of these states or are weighing a non-resident filing.

On speed, Massachusetts typically clears standard online filings faster than Connecticut. Both states offer expedited tiers at an additional cost for filers on tight timelines.

For most small operators the choice is not really between these two states at all. It is between forming where the business actually operates and trying to route through a non-resident filing. The data below shows what each option actually costs.

Formation filing fee
Connecticut $120
Massachusetts $500
Connecticut saves $380
Year 1 total estimate
Connecticut $300
Massachusetts $1,100
Connecticut saves $800
Ongoing per year
Connecticut $180
Massachusetts $600
Connecticut saves $420
3-year total
Connecticut $660
Massachusetts $2,300
Connecticut saves $1,640

Key differences at a glance

  • Connecticut costs $380 less to form ($120 vs $500).
  • Connecticut is $420 per year cheaper to maintain ($180 vs $600).

Where each state fits

For most filers, forming in the state you actually operate from is the right call. The side-by-side below shows where the two states meaningfully diverge.

Three-year cost, side by side

Rough estimate of the state-facing cost to form and keep an LLC through three years. Both totals include a $100 per year registered-agent estimate.

Connecticut Massachusetts
Year 1
$300
$1,100
Year 2
$480
$1,700
Year 3
$660
$2,300

Running total includes the one-time filing fee and annual ongoing costs (report fee or franchise tax plus a $100/year registered agent estimate).

What it costs under your specific situation

The table below runs the same LLC through four common scenarios. "Non-resident" rows assume a typical home-state foreign LLC registration adds about $200 per year of stacked cost; the real number depends on which state you live in and ranges from $50 to over $800 depending on jurisdiction.

Scenario Year 1 Each year after 3-year total
You live in Connecticut, business operates there
No foreign LLC registration needed. You pay Connecticut fees only.
$300 $180 $660
You live in Massachusetts, business operates there
No foreign LLC registration needed. You pay Massachusetts fees only.
$1,100 $600 $2,300
Non-resident forming in Connecticut with operations elsewhere
You pay Connecticut's fees plus a typical home-state foreign LLC registration of about $200 per year.
$500 $380 $1,260
Non-resident forming in Massachusetts with operations elsewhere
You pay Massachusetts's fees plus a typical home-state foreign LLC registration of about $200 per year.
$1,300 $800 $2,900

Connecticut vs Massachusetts: full comparison

Dimension Connecticut Massachusetts
Online filing
Can you file the formation document online?
Yes Yes
Online approval time
Standard, non-expedited
5 business days 2 business days
Expedited option
Paid fast-track filing
$50 $20
Annual report
Required in addition to tax
Required, $80 Required, $500
State-imposed annual tax
Franchise, privilege, or LLC tax minimum
None None
State income tax
On pass-through LLC income at member level
Yes Yes
Publication requirement
Newspaper publication after formation
No No
Operating agreement
Required by state statute
Recommended, not required Recommended, not required
Foreign LLC fee
Cost to register as a foreign LLC in this state
$120 $500
State sales tax
General statewide rate
6.3% 6.3%

Taxes in Connecticut and Massachusetts

How each state handles entity-level tax on LLCs. Pass-through classification means member-level income tax also applies at each member's residence state.

Connecticut tax

No entity-level franchise tax on LLCs. State income tax applies to member-level pass-through income. Corporate rate 7.5%.

Massachusetts tax

No entity-level franchise tax on LLCs. State income tax applies to member-level pass-through income. Corporate rate 8.0%.

Ongoing compliance

The recurring filings each state requires after formation.

Connecticut

Annual report $80, due 03/31 each year. Registered agent required in Connecticut.

Massachusetts

Annual report $500, due on your anniversary month. Registered agent required in Massachusetts.

Formation process, side by side

What actually happens from the moment you start filing to the moment you're in good standing. Use this as a checklist.

Connecticut

  1. Check business-name availability on the Connecticut entity search.
  2. Appoint a registered agent with a physical Connecticut street address.
  3. File Certificate of Organization (Limited Liability Company, Domestic) for $120.
  4. Wait for approval. Online typically 5 business days. Paid expedite from $50.
  5. Adopt an operating agreement (recommended, not required by Connecticut statute).
  6. Apply for a federal EIN (free from the IRS).
  7. Open a business bank account to separate personal and business finances.
  8. File your first annual report and pay $80 when it comes due.

Massachusetts

  1. Check business-name availability on the Massachusetts entity search.
  2. Appoint a registered agent with a physical Massachusetts street address.
  3. File Certificate of Organization (Form 156C §12) for $500.
  4. Wait for approval. Online typically 2 business days. Paid expedite from $20.
  5. Adopt an operating agreement (recommended, not required by Massachusetts statute).
  6. Apply for a federal EIN (free from the IRS).
  7. Open a business bank account to separate personal and business finances.
  8. File your first annual report and pay $500 when it comes due.

Before you pick either state

A few things that apply no matter which state you choose. These trip up enough first-time filers that they're worth stating explicitly.

Registered agent is non-negotiable. Both Connecticut and Massachusetts (and every other US state) require every LLC to designate a registered agent with a physical street address in the state of formation. You can serve as your own agent if you live in the state; otherwise a commercial agent runs $50 to $125 per year. Using your own home address makes it part of the public record.

Forming elsewhere does not escape your home state's tax. If you live and operate a business from your home state, forming the LLC in Connecticut or Massachusetts does not avoid your home state's income tax. The moment you transact business at home, your home state requires a foreign LLC registration, and state tax liability follows your residence regardless of where the entity sits on paper.

EIN applications are free. The IRS issues Employer Identification Numbers directly at no cost. Any service charging you to "get your EIN" is reselling a free form submission. Single-member LLCs with no employees technically don't need one for federal tax, but nearly every bank requires an EIN to open a business account.

Operating agreement matters more than the state you pick. A well-drafted operating agreement governs member ownership, management, profit splits, buy-sell terms, and dissolution. Without one, your LLC runs on the state's default rules, which are rarely what you want. California, Maine, Missouri, and New York require a written one by statute; every other state treats it as strongly recommended.

Agency contacts

Connecticut Secretary of the State, Business Services Division

Website
portal.ct.gov/sots
Phone
(860) 509-6003
Mail
Business Services Division, P.O. Box 150470, Hartford, CT 06115-0470
Office
165 Capitol Avenue, Suite 1000, Hartford, CT 06106
Hours
8:30 AM to 4:30 PM Eastern, Monday to Friday

Secretary of the Commonwealth of Massachusetts, Corporations Division

Website
www.sec.state.ma.us/divisions/corporations/corporations.htm
Phone
(617) 727-9640
Email
corpinfo@sec.state.ma.us
Mail
Secretary of the Commonwealth, Corporations Division, One Ashburton Place, Room 1717, Boston, MA 02108
Office
McCormack Building, One Ashburton Place, 17th Floor, Boston, MA 02108
Hours
8:45 AM to 5:00 PM Eastern, Monday to Friday

Connecticut Department of Revenue Services

Website
portal.ct.gov/drs
Phone
(860) 297-5962
Email
drs@ct.gov
Mail
450 Columbus Boulevard, Suite 1, Hartford, CT 06103
Hours
8:30 AM to 4:30 PM Eastern, Monday to Friday

Massachusetts Department of Revenue

Website
www.mass.gov/orgs/massachusetts-department-of-revenue
Phone
(617) 887-6367
Mail
Massachusetts Department of Revenue, P.O. Box 7010, Boston, MA 02204
Office
100 Cambridge Street, Boston, MA 02114
Hours
9:00 AM to 4:00 PM Eastern, Monday to Friday

Frequently Asked Questions

  • Is it cheaper to form an LLC in Connecticut or Massachusetts?

    Connecticut is cheaper at formation ($120) than Massachusetts ($500). Ongoing costs are also different: $180 vs $600 per year. Total over three years: $660 vs $2,300.

  • Can I form an LLC in Connecticut if I live in Massachusetts?

    Yes, but your Massachusetts business will almost certainly need to register as a foreign LLC in Massachusetts too, which means paying Massachusetts's foreign registration fee and any ongoing Massachusetts obligations on top of the Connecticut ones. The "form elsewhere to save" math usually doesn't work for operating businesses; it only works when you have no physical operations tied to any specific state.

  • How long does it take to form an LLC in Connecticut vs Massachusetts?

    Connecticut online: 5 business days; Massachusetts online: 2 business days. Connecticut offers paid expedite from $50. Massachusetts offers paid expedite from $20.

  • Which state has lower taxes for an LLC, Connecticut or Massachusetts?

    Connecticut: state income tax applies to member-level pass-through income, no entity-level franchise or LLC tax. Massachusetts: state income tax applies to member-level pass-through income, no entity-level franchise or LLC tax.

  • Do both states require a registered agent?

    Yes. Every US state (and DC) requires every LLC to maintain a registered agent with a physical street address in the state. Connecticut and Massachusetts both have this requirement. You can serve as your own agent if you live in the state; most out-of-state filers use a commercial agent for $50 to $125 per year.

  • Which state should I pick if I run an online business from home?

    Form in the state you actually live in. Your home state's Department of Revenue treats your residence as nexus regardless of where the LLC is filed, which means you owe state income tax there anyway. Forming in Connecticut or Massachusetts to escape your home state's tax doesn't work; it adds paperwork. The non-resident filings make sense when you genuinely operate nowhere in particular: international founders, purely passive holding entities, or real-estate LLCs owning property in other states.

Full state guides

More Connecticut and Massachusetts comparisons

Sources

  • Filing fee: business.ct.gov/knowledge-base/articles/domestic-limited-liability-com… · verified April 21, 2026
    Connecticut Secretary of the State Business Services: Certificate of Organization (formation of a domestic LLC) fee is $120. Same fee applies whether filed online through Business.CT.gov or by mail.
  • Expedited filing: business.ct.gov/knowledge-base/articles/expedited-services · verified April 21, 2026
    Connecticut expedited service fee is $50 per transaction. Expedited service is only available for online filings through Business.CT.gov (not available for mail). Expedited filings typically process within 24 hours.
  • Annual report fee: business.ct.gov/knowledge-base/articles/domestic-limited-liability-com… · verified April 21, 2026
    Annual Report fee = $80, filed online between January 1 and March 31 each year. Same $80 fee applies to foreign LLCs (Foreign Annual Report).
  • Franchise tax: www.cttaxalert.com/2019/08/business-entity-tax-repeal/ · verified April 21, 2026
    Connecticut Public Act 19-117 (2019 budget bill) repealed the $250 biennial Business Entity Tax (Conn. Gen. Stat. Sec. 12-284b) effective for tax years beginning on or after January 1, 2020. Connecticut no longer imposes a franchise tax or business entity tax on LLCs. Flagged as applies: false per the instructions.
  • Foreign LLC registration fee: business.ct.gov/knowledge-base/articles/foreign-limited-liability-comp… · verified April 21, 2026
    Connecticut Foreign Registration Statement (foreign LLC): $120 filing fee, matching the domestic Certificate of Organization. Foreign LLCs also file the $80 Annual Report between January 1 and March 31.
  • Sales tax rate: portal.ct.gov/drs/sales-tax/sales-and-use-tax-information · verified April 21, 2026
    Connecticut Department of Revenue Services: statewide general sales and use tax rate is 6.35%. Connecticut does not authorize local sales taxes. A higher 7.75% rate applies to certain luxury goods and a 1% rate applies to computer and data processing services.
  • Corporate income tax rate: portal.ct.gov/drs/corporation-tax/corporation-business-tax · verified April 21, 2026
    Connecticut Corporation Business Tax (CBT) base rate is 7.5% on net income. A 10% CBT surtax has been extended through income years beginning before January 1, 2026 by Public Act 24-151. The 7.5% is Connecticut's income-only corporate rate; the surtax and PTET are noted in taxes.notes rather than folded into this number.
  • Business name search: service.ct.gov/business/s/onlinebusinesssearch?language=en_US · verified April 21, 2026
    Connecticut Business Records Search via the CT.gov portal. Use before filing to confirm name availability.
  • Online filing portal: business.ct.gov/ · verified April 21, 2026
    Business.CT.gov is the official online filing portal for Connecticut business formation, annual reports, and amendments. Filings typically complete within 3 to 5 business days (standard) or about 1 business day with the $50 expedited fee.
  • Operating agreement requirement: law.justia.com/codes/connecticut/title-34/chapter-613a/section-34-243d… · verified April 21, 2026
    Conn. Gen. Stat. Sec. 34-243a defines an operating agreement as the agreement of all members whether oral, implied, in a record, or any combination. No statutory requirement that the agreement be written or filed. Recorded as not required.
  • Publication requirement: law.justia.com/codes/connecticut/title-34/chapter-613a/ · verified April 21, 2026
    Connecticut Uniform Limited Liability Company Act (Chapter 613a) contains no newspaper publication requirement. LLCs are not required to publish notice of formation.
  • Filing fee: www.sec.state.ma.us/divisions/corporations/general-information/corpora… · verified April 21, 2026
    Secretary of the Commonwealth Corporations Division filing fee schedule: domestic LLC Certificate of Organization = $500. Online and fax filings carry an automatic $20 expediting surcharge, yielding a $520 effective fee for electronic filings.
  • Expedited filing: www.sec.state.ma.us/divisions/corporations/general-information/corpora… · verified April 21, 2026
    Massachusetts automatically adds a $20 expediting surcharge to electronic (online or fax) filings and processes them ahead of mail submissions. This is the cheapest expedited tier. Same-day service requires hand-delivery at the Boston office before the cutoff. Online filings typically clear in 1–2 business days.
  • Certificate of Formation form: www.sec.state.ma.us/divisions/corporations/filing-by-subject/limited-l… · verified April 21, 2026
    Massachusetts publishes a fillable Certificate of Organization PDF (form reference 'Form 156C §12' a/k/a c156c512d) for paper filers, with a parallel online filing flow through the Corporations Division portal.
  • Online filing portal: corp.sec.state.ma.us/corpweb/loginsystem/externallogin.aspx · verified April 21, 2026
    Massachusetts Corporations Division online filing portal (external login). Used for Certificate of Organization, annual report, and amendments.
  • Business name search: corp.sec.state.ma.us/corpweb/CorpSearch/CorpSearch.aspx · verified April 21, 2026
    Massachusetts Corporations Division business entity search. Supports lookup by entity name, individual name, entity ID, or filing number.
  • Operating agreement requirement: malegislature.gov/Laws/GeneralLaws/PartI/TitleXXII/Chapter156C · verified April 21, 2026
    Massachusetts General Laws Chapter 156C (Limited Liability Company Act). §2(9) defines operating agreement as 'any written or oral agreement of the members'; §9 requires LLCs to keep any written operating agreement at the principal office but does not require one to exist. Default Chapter 156C rules fill gaps.
  • Publication requirement: www.sec.state.ma.us/divisions/corporations/filing-by-subject/limited-l… · verified April 21, 2026
    Massachusetts does not require newspaper publication for LLC formation. The Corporations Division LLC information page describes no such obligation, and M.G.L. c. 156C does not impose one.
  • Foreign LLC registration fee: www.sec.state.ma.us/divisions/corporations/general-information/corpora… · verified April 21, 2026
    Corporations Division fee schedule: foreign LLC Application for Registration = $500 (plus $20 electronic filing surcharge if filed online/fax).
  • Annual report fee: www.sec.state.ma.us/divisions/corporations/general-information/corpora… · verified April 21, 2026
    Corporations Division fee schedule: LLC annual report = $500 (paper), $520 online/fax including the $20 expediting surcharge. Due by the anniversary of the original Certificate of Organization under M.G.L. c. 156C §12.
  • Franchise tax: www.mass.gov/info-details/massachusetts-dor-corporate-excise-tax-guide… · verified April 21, 2026
    Massachusetts has no franchise tax on LLCs treated as pass-through entities. The Corporate Excise applies only when an LLC elects C-corp treatment; it is an 8.00% income component plus $2.60 per $1,000 of tangible property or net worth, with a $456 minimum excise. Not a franchise tax in the traditional sense; applies = false for the pass-through default.
  • Corporate income tax rate: www.mass.gov/info-details/massachusetts-dor-corporate-excise-tax-guide… · verified April 21, 2026
    Massachusetts Corporate Excise net income tax component = 8.00% under M.G.L. c. 63 §39. Reported as income-only to match Delaware's convention; the companion $2.60-per-$1,000 net-worth/property measure is documented in taxes.notes / franchiseTax.notes.
  • Sales tax rate: www.mass.gov/info-details/massachusetts-tax-rates · verified April 21, 2026
    Massachusetts statewide sales and use tax rate is 6.25% under M.G.L. c. 64H §2. No local sales taxes are imposed; separate 6.25% use tax on out-of-state purchases and local-option meals (0.75%) and rooms (up to 6%) taxes apply to specific categories only.