Connecticut taxes through the Connecticut Department of Revenue Services at a 6.35% statewide base rate, with local rates stacking on top and economic nexus for remote sellers at $100,000 in sales AND 200 transactions. Filing runs monthly, quarterly, or annually by liability. Because Connecticut runs an annual bracket, low-volume medical and dental practices can go twelve months between returns — which is exactly how long a liability account can drift before anyone looks at it.
Employer registration runs through the Connecticut Department of Labor, and the entity is registered with the Connecticut Secretary of the State. One of the few states requiring BOTH thresholds to be met, not either — so high-value, low-volume sellers often are not required to register.
We handle your practice’s financial records only — never patient health information.
At a glance
Sales tax authority
Connecticut Department of Revenue Services — 6.35% statewide base rate
Economic nexus
$100,000 in sales AND 200 transactions
Filing cadence
Monthly, quarterly, or annually by liability
Employer registration
Connecticut Department of Labor
Entity registration
Connecticut Secretary of the State
Registering to do business in Connecticut
Registering to do business in Connecticut runs through the Connecticut Secretary of the State, with tax accounts through the Connecticut Department of Revenue Services and employer accounts through the Connecticut Department of Labor. Connecticut treats these as wholly independent, so being in good standing with one says nothing about the others — and the sales tax account is the one that accrues a real balance while you are not looking.
Entity-level obligations in Connecticut
Beyond sales tax, Connecticut entities carry their own obligations — registration with the Connecticut Secretary of the State, and whatever annual entity-level tax or report the state imposes to stay in good standing. One of the few states requiring BOTH thresholds to be met, not either — so high-value, low-volume sellers often are not required to register. Losing good standing is not merely administrative: it can interrupt financing, a sale, or a license renewal at the worst possible moment, which is why these are accrued and calendared rather than discovered.
Are your services taxable in Connecticut?
Whether medical and dental practices services are taxable in Connecticut is the question that catches people out — states differ enormously, and several have been broadening what counts. One of the few states requiring BOTH thresholds to be met, not either — so high-value, low-volume sellers often are not required to register. We code service revenue separately from any product revenue so the treatment is explicit rather than assumed.
We keep the books. You run the business.
Categorization, reconciliation, month-end close, and clean financial statements — with nothing left for you to chase.
View pricingHow It Works
Free review
We check where your medical and dental practices books stand and whether Connecticut activity has crossed $100,000 in sales and 200 transactions.
Register what is needed
Accounts set up with the Connecticut Department of Revenue Services, plus the Connecticut Department of Labor if you have employees here.
Catch up
Back periods cleaned up at a fixed quoted price, including any Connecticut liability that was collected but never reconciled.
Close on cadence
Monthly close worked backward from your Connecticut due dates — monthly, quarterly, or annually by liability.
Medical & Dental Practices Bookkeeping in Connecticut — Frequently Asked Questions
Do medical and dental practices need to register for sales tax in Connecticut?
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How often do medical and dental practices file in Connecticut?
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Which Connecticut agencies do medical and dental practices deal with?
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Do medical and dental practices pay Connecticut state income tax?
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Do you prepare income tax returns for medical and dental practices?
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Medical & Dental Practices bookkeeping in Connecticut
Book a free consultation. We will check where your books stand and whether your Connecticut activity has crossed $100,000 in sales and 200 transactions.
- Done-for-you
- Solo or group
- Nationwide
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