Connecticut Business License in 2026: The Sales Tax Permit, DCP Credentials and Town Requirements

Connecticut does not hand every new business a single licence. There is no general state business license, and in most towns there is no general local one either. What Connecticut does have is a sales and use tax permit for anyone selling goods or taxable services, a long list of Department of Consumer Protection (DCP) credentials for contractors and regulated trades, and a set of town-level duties that catch many owners out: the trade name certificate, health permits and the annual personal property declaration. This guide covers each in turn, with the 2026 fees, the contractor rules, and what Hartford requires. We checked every figure in October 2026.

Quick answer

Connecticut has no general state business license. If you sell goods or taxable services, you need a sales and use tax permit from the Department of Revenue Services, which costs $100 per location and renews free every two years. Contractors working on homes register with DCP, and towns handle trade names, health permits and personal property declarations.

• Trading without a permit: $250 penalty on day one, then $100 a day

• Sales tax is 6.35% statewide, with no local add-ons

• Home improvement contractor registration: $220 a year, expiring March 31

• Trade names are filed with the town clerk and last 5 years

Does Connecticut have a state business license?

No. The state's own business portal, Business.CT.gov, describes a layered system instead: you register the business with the state and with your municipality, you register with the Department of Revenue Services (DRS) for the tax accounts you need, and you obtain any industry licence that applies to your activity. There is no one document that authorizes a business to operate everywhere in Connecticut.

The agencies you are most likely to deal with are the Secretary of the State, which forms LLCs and corporations; DRS, which issues sales tax permits and registers employers for withholding; the Department of Consumer Protection, which licenses dozens of occupations and business types, from electricians and plumbers to home improvement contractors, real estate agents, liquor permittees and food manufacturers; the Department of Public Health and local health districts, which oversee food service and personal care businesses; and your town, whose clerk, assessor, zoning office and building department each have a role.

For a shop, an online seller or a café, the sales tax permit is what people usually mean when they search for a Connecticut business license. For a freelance writer or a consultant selling services Connecticut does not tax, there may be no state licence at all beyond an LLC filing, if you choose one. Our Connecticut LLC guide covers that route: the certificate of organization costs $120, and the annual report costs $80, filed between January 1 – March 31.

The quickest way to see what applies to your own business is the New Business Checklist on Business.CT.gov, which builds a list of licences and registrations from your business type. Use it as a starting point, then confirm each item with the agency named.

The sales and use tax permit

You need a sales and use tax permit before you make any taxable sale in Connecticut. That covers retailers with a shop, home-based online sellers, restaurants and caterers, and the many service businesses whose services Connecticut taxes. The state taxes a longer list of services than most of its neighbours, including landscaping, janitorial and cleaning work, pest control, car repair, repair of most other goods, and some business services, so do not assume a service business is outside the system. Our Connecticut sales tax guide has the full list.

You register through myconneCT, DRS's online system. Have ready your federal EIN or, for a sole proprietor without employees, your Social Security number; the legal name and any trade name; the business address; the names and Social Security numbers of the owners, partners or officers responsible for the tax; and a bank account or card for the fee. The permit costs $100, and you need a separate permit for each location. Once DRS processes the application you can download a copy from your myconneCT account, and the official permit arrives by mail.

Two features of the Connecticut permit are worth knowing. First, it expires every two years, but DRS renews it automatically and mails the new one at no cost, as long as your account is active and in good standing. That means filing every return, including returns with no sales, and keeping your mailing address current. Second, the penalty for trading without one is stiff: $250 for the first day you do business without a permit and $100 for each day after. DRS can waive it where the failure was due to reasonable cause, but do not rely on that.

Once registered you charge 6.35% on most taxable sales. Connecticut has no city or county sales taxes, so the rate is the same in Hartford, Stamford and every small town. Meals and certain drinks are taxed at 7.35%, and hotels, motels and short-term rentals add a 15% room occupancy tax. Out-of-state sellers register once their Connecticut sales reach $100,000 and 200 sales in the twelve months ending September 30.

Trade names: a town filing, not a state one

Connecticut is one of the states where trade names are a local matter. If you do business under any name other than your own legal name, you file a trade name certificate with the town clerk in the town where the business is located. A sole proprietor called Maria Russo who trades as "Shoreline Candle Co." files one; an LLC or corporation files one only if it trades under something other than its exact registered name, such as "Shoreline Candles LLC" operating a shop called "The Wick Room."

The rules changed on January 1, 2025. Certificates filed from that date last 5 years unless renewed, and older certificates expire at the end of 2029. Fees are set by each town and are modest. Banks routinely ask for the certified certificate before they open an account in a trade name, which is when many owners discover they need one.

A trade name certificate is a public notice of who is behind a name. It does not reserve the name across the state and gives no exclusive rights. If the brand matters, search the Connecticut and federal trademark registers before you print signs.

Registrations vs operating licences in Connecticut

	What it does	Lets you run a regulated activity?
Town trade name certificate	Records who is behind a business name	No
LLC certificate of organization	Creates the legal entity	No
DRS sales and use tax permit	Lets you collect sales tax	No
DCP credential or health permit	Authorizes a trade, profession, food or liquor business	Yes

Town trade name certificate

What it does

Records who is behind a business name

Lets you run a regulated activity?

No

LLC certificate of organization

What it does

Creates the legal entity

Lets you run a regulated activity?

No

DRS sales and use tax permit

What it does

Lets you collect sales tax

Lets you run a regulated activity?

No

DCP credential or health permit

What it does

Authorizes a trade, profession, food or liquor business

Lets you run a regulated activity?

Yes

DCP credentials for contractors and trades

The Department of Consumer Protection is the state's main licensing agency. Its eLicense system handles applications, renewals and public lookups for occupational trades such as electrical, plumbing and heating, piping and cooling work, and for professions and businesses including real estate, pharmacies, liquor permits, food manufacturing and many more. Before you open a business in a regulated field, look up your occupation on DCP's licence application pages or ask the department directly; most trade credentials require supervised experience and an exam at the individual level.

Home improvement contractors

Under Connecticut's Home Improvement Act, any person or business that contracts with a consumer for work on residential property must register with DCP. The covered work includes permanent changes such as roofs, siding, flooring, windows, fences and swimming pools. Several kinds of work fall outside the Act: work homeowners do on their own property, work done as a subcontractor to a registered contractor, work already covered by a trade licence such as an electrician's, work on commercial property, contracts under $200, routine maintenance such as snow plowing, mowing and tree pruning, and new home construction, which has its own registration.

The registration costs $220, which is non-refundable, and every applicant must carry general liability insurance of at least $20,000, naming the insurer and policy number on the application. Register in the name that will sign the contracts: an LLC must register as the LLC, because an individual's registration does not cover it, and the LLC must already be on file with the Secretary of the State. All registrations expire on March 31 each year, and the renewal fee is also $220, paid online. Salespeople who sell home improvement contracts for a registered contractor need their own salesperson registration.

New home construction contractors

Anyone who builds a new home, including speculative housing, needs a separate new home construction contractor registration. The fee is $360, made up of a $240 registration fee and a $120 guaranty fund fee, and adding home improvement services costs another $100. The same $20,000 insurance minimum applies, and these registrations also expire on March 31; that date replaced September 30 under Public Act 21-197.

Getting registered to remodel homes in Connecticut

Step 1

Form the LLC with the Secretary of the State

Step 2

Buy $20,000+ liability insurance

Step 3

Apply to DCP ($220)

Step 4

Building permits per job

from the town

Food, health and liquor

Restaurants, cafés, caterers, food trucks and temporary food stands are licensed locally, by the town health department or regional health district. Expect a plan review before you build or renovate a kitchen, an inspection before you open, and an annual licence after that. Barbers, hairdressers, nail salons and tattoo artists need individual credentials from the Department of Public Health and, in many towns, a local shop permit as well. Selling alcohol requires a liquor permit from DCP's Liquor Control Division, and the premises must also pass local zoning, so check with the town before you sign a lease.

Food made at home for sale is subject to separate state rules, and a home kitchen generally cannot be used for a restaurant or catering business. If you plan to sell food you make at home, check the current cottage food rules with DCP before you invest in packaging.

Hartford: activity licences, not a general licence

Hartford does not issue a general business license. Instead, the city licenses specific activities through two departments.

The Health and Human Services Department licenses food businesses. Its food licences include caterer licences, farmers market licences, food service establishments, mobile or itinerant food vendor permits, seasonal food licences and temporary vendor food licences. Apply through the department's online request system and plan for inspection before you open.

The Licenses and Inspections Division of the Department of Development Services licenses mobile vendors, and a separate page covers temporary merchandise vendors. A food truck in Hartford deals with three offices: HHS for the food licence, Licenses and Inspections for the vendor licence, and the Planning Division for zoning approval if the truck will operate on private property. On the street, Article 27 of the city code keeps trucks away from building entrances, driveways, bus stops and loading zones, at least 20 feet from fire hydrants and intersections, and parked against the curb with nothing on the sidewalk. Zoning rules bar operation after 9 p.m. unless expressly permitted. The vendor year has run from July 1 to June 30, so check the current year's dates before applying.

Everything else goes through the usual town offices: zoning approval and a certificate of occupancy for new premises, building and sign permits from Development Services, and the personal property declaration with the city assessor.

The personal property declaration

This is the Connecticut obligation that new owners most often miss, because it comes from the town rather than the state and there is no licence attached to it. Every business that owns taxable personal property, such as furniture, fixtures, machinery, computers and other equipment, unregistered vehicles and leased equipment, must declare it to the assessor in the town where it is located each year. The property is assessed as of October 1, and the declaration is due by November 1, or the following Monday when November 1 falls on a weekend. In 2026, November 1 is a Sunday.

Hartford's notice spells out the consequences, and other towns follow the same state law. If you file late without an approved extension, the assessor adds a 25% penalty to your assessment. If you do not file at all, the assessor estimates the value and adds the penalty, and not receiving a form in the mail does not excuse you. Towns mail forms to businesses they know about, but a new business has to come forward itself. Ask your assessor's office for the form in the first autumn after you open, even if all you own is a laptop and a desk.

A Connecticut business year

January 1 – March 31

LLC annual report to the Secretary of the State ($80)

March 31

Home improvement and new home construction registrations expire

October 1

Assessment date for business personal property

November 1 (or next Monday)

Personal property declaration due to the town assessor

Every two years

DRS mails a renewed sales tax permit if your account is in good standing

Worked examples

A gift shop in Essex. The owner forms an LLC with the Secretary of the State for $120 and registers with DRS for a sales tax permit at $100. Because the shop trades under the LLC's own name, no trade name certificate is needed. State setup cost: $220. A $40 candle costs the customer $42.54 with 6.35% tax. Each year she files the $80 annual report and, every autumn, a personal property declaration listing the shelving, register and computer.

A roofer in New Haven County. The roofer forms an LLC, buys liability insurance of at least $20,000, and registers the LLC with DCP as a home improvement contractor for $220. His first-year state cost is $340 plus insurance, and the registration must be renewed for $220 by March 31. He pulls a building permit from each town for re-roofing jobs that need one and uses a written contract that meets the Home Improvement Act's requirements. A neighbour of his who does only commercial roofing would not need the registration, though building permits still apply.

A food truck in Hartford. The owner registers with DRS for a permit, since meals are taxed at 7.35%. She applies to Hartford's Health and Human Services Department for a mobile food vendor permit, to Licenses and Inspections for the city vendor licence and, for a private lot, to Planning for zoning approval. If she serves at events in other towns, each town's health department may require its own temporary or itinerant permit.

Add licence and registration fees to your first-year budget

Registration, Legal & LicencesEquipment & Fit-outOpening InventoryLaunch MarketingMonthly Operating CostRunway Needed

One-Time Costs₹7,00,000.00

Working Capital Reserve₹10,80,000.00

Recommended Buffer (10%)₹1,78,000.00

Total Capital Required₹19,58,000.00

Open the full Startup Cost Calculator (PDF, save, compare)

How to get set up in Connecticut

Getting legally set up in Connecticut

1. 1

   Choose your structure

   Form an LLC with the Secretary of the State for $120, or trade as a sole proprietor and file a trade name certificate with your town clerk.

   Connecticut LLC guide
2. 2

   Get an EIN

   Free from the IRS; needed for entities and employers.

   EIN guide
3. 3

   Register with DRS on myconneCT

   Get your sales and use tax permit ($100 per location) before your first sale, plus withholding if you have staff.

4. 4

   Get any state credential

   Check DCP's eLicense for your trade or profession, and the Department of Public Health for personal care work.

5. 5

   Clear town requirements

   Zoning, certificate of occupancy, health licence, building and sign permits.

6. 6

   Diary the annual filings

   LLC annual report by March 31, DCP renewals by March 31, personal property declaration by November 1.

Common mistakes and how to fix them

The first mistake is opening before the permit is in place. The $250 first-day penalty and the $100 daily penalty that follows add up fast. If you have already started selling, register now, file returns for the periods you missed, and ask DRS about a waiver if you had reasonable cause.

The second is letting returns lapse. Because DRS renews permits only for accounts in good standing, a business that stops filing zero returns during a slow season can find itself without a valid permit. File every return, even when you made no sales.

The third is doing home improvement work under the wrong name. If your LLC signs the contract, the LLC must hold the DCP registration. An owner's individual registration does not cover it, and an unregistered contractor can have trouble enforcing payment.

The fourth is forgetting the personal property declaration. New businesses are not always on the assessor's mailing list. Call the assessor in your first autumn, and file by the deadline or ask for an extension in writing.

The fifth is treating a trade name certificate as brand protection. It only records who is behind the name. Search the trademark registers if the name matters to you.

Official Connecticut links

• DRS — Registering with DRSSales and use tax permit through myconneCT
• DRS — Permit renewal and penalties
• Business.CT.gov — Licenses and permits
• DCP — Home improvement contractor application
• DCP — New home construction contractor
• Hartford — Food licensing
• Hartford — Mobile vendors
• Hartford — Personal property declarations

What to do next

Pick your structure with our Connecticut LLC guide, check the name with the LLC name checker and get an EIN. Register on myconneCT for your sales tax permit before your first sale, and use our Connecticut sales tax guide and sales tax calculator to price correctly. Then visit your town clerk, zoning office and assessor before you sign a lease. For neighbouring states, see our Massachusetts and New York guides or the business licenses overview.

This is general information, not legal or tax advice — confirm on the official source or with a professional.

Frequently asked questions

Does Connecticut require a general business license?

No. Connecticut does not issue a single statewide business license. Most businesses that sell goods or taxable services need a sales and use tax permit from the Department of Revenue Services, regulated trades and professions need a credential from the Department of Consumer Protection or another agency, and towns handle trade names, zoning, health permits and personal property declarations.

How much is a Connecticut sales tax permit?

The permit costs $100 per location and you apply through myconneCT before making any sales. It expires every two years and DRS renews it automatically at no cost while your account is active and in good standing. Trading without a permit carries a $250 penalty for the first day and $100 for each day after.

Do I need a license to do home improvement work in Connecticut?

Yes, if you contract directly with homeowners for work on residential property such as roofs, siding, windows, flooring, fences or pools. You register as a home improvement contractor with the Department of Consumer Protection for $220, carry at least $20,000 of general liability insurance and renew every year by March 31. Contracts under $200, subcontract work and commercial jobs are excluded.

Where do I register a trade name in Connecticut?

With the town clerk in the town where the business is located, not with the state. Sole proprietors and partnerships trading under any name other than the owners' names must file a trade name certificate, and an LLC or corporation files one only if it uses a name other than its exact legal name. Certificates filed since January 1, 2025 last 5 years.

Do I need a business license in Hartford?

Hartford does not issue a general business license. The city licenses particular activities: food businesses through the Health and Human Services Department, and mobile and temporary vendors through the Licenses and Inspections Division of Development Services. Every business with equipment and furniture must also file a personal property declaration with the city assessor each year.

What is the Connecticut personal property declaration?

Every business that owns furniture, fixtures, machinery, computers or other equipment must declare it to the town assessor each year, by November 1 or the following Monday when November 1 falls on a weekend. The town taxes it like real estate. If you file late without an extension, the assessor adds a 25% penalty to the assessment, and not receiving a form is no excuse.

Sources & verification

Figures on this page were checked against the sources below when it was last reviewed on 13 October 2026. Each rate and limit is stored once with its own official source and review date, and official update channels are monitored daily so changes are picked up. How we verify

1. 1.Registering with DRS — Connecticut Department of Revenue Services · accessed 13 October 2026
2. 2.Sales Tax: Other Helpful Information — Connecticut Department of Revenue Services · accessed 13 October 2026
3. 3.Home Improvement Contractor Application — Connecticut Department of Consumer Protection · accessed 13 October 2026
4. 4.Home Improvement Applications — Connecticut Department of Consumer Protection · accessed 13 October 2026
5. 5.New Home Construction and Home Improvement Renewal — Connecticut Department of Consumer Protection · accessed 13 October 2026
6. 6.New Home Construction Contractor — Connecticut Department of Consumer Protection · accessed 13 October 2026
7. 7.Business Licenses and Permits in CT — Business.CT.gov (State of Connecticut) · accessed 13 October 2026
8. 8.Business Personal Property Declarations — City of Hartford Assessor · accessed 13 October 2026
9. 9.Apply to be a Mobile Vendor — City of Hartford Department of Development Services · accessed 13 October 2026
10. 10.Apply for a Food License — City of Hartford Health and Human Services · accessed 13 October 2026
11. 11.Trade Name Certificate — City of Bristol, Connecticut (Town & City Clerk) · accessed 13 October 2026
12. 12.Sales and Use Tax Information — Connecticut Department of Revenue Services · accessed 13 October 2026