Do contractors charge sales tax in Connecticut?
In Connecticut a contractor is treated as the CONSUMER of the materials they build into real property. That means the contractor pays sales tax when they buy the materials, and does not add sales tax to the customer's invoice for that work — the tax is already inside the price. Source: Conn. Gen. Stat. §12-407(a)(37)(I) (services to industrial, commercial or income-producing real property are taxable).
| What | Connecticut |
|---|---|
| Contractor’s default role | Consumer of materials |
| What the charge is called | Sales Tax |
| Local rates on top | No local rates |
| Capital improvement exempt to the customer | Yes |
Where this gets more complicated
The residential/commercial line is the whole rule in Connecticut: services to EXISTING industrial, commercial or income-producing real property are taxable, services to residential property generally are not. New construction is excluded from both. A rented residential building can be income-producing — confirm the property class before relying on the exemption.
Source
Conn. Gen. Stat. §12-407(a)(37)(I) (services to industrial, commercial or income-producing real property are taxable).
Read the statute in the Connecticut General Statutes (Connecticut General Assembly): cga.ct.gov.
This is a summary of a state’s published guidance, not tax or legal advice. Rates and rules change, local jurisdictions add their own, and the treatment of a specific job depends on the contract and the work. Check the citation and speak to a CPA or a state tax adviser before relying on it.
How Seayora uses this rule
Seayora resolves this rule on every invoice a contractor raises — per line, from the job site’s own address — and prints the rate, the jurisdiction and this citation on the document itself, so the estimate a customer accepts is the invoice they are billed. Where the rule is more nuanced than a single answer, Seayora refuses to guess a total rather than quoting a confident wrong one.
Guides on this rule
- Sales Tax Basics for Contractors and Service Businesses — When contractors charge sales tax: how states treat repairs, capital improvements and materials, what nexus means, and the exemption certificates to keep.
Compare this rule in every state
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