Texas has no state income tax, which sometimes gets mistaken for Texas being simple about tax generally. Sales tax for contractors is not simple: Texas draws a line between a new construction contract and a contract to repair, remodel, or maintain existing real property, and which side of that line a job falls on can change who owes the tax and at what point. This is a practical overview, not tax advice. The Texas Comptroller's own guidance for contractors is the authoritative source, and your accountant should confirm how it applies to your specific contracts — rules and local rates do change, so confirm the current position before relying on anything here.
New construction vs. repair and remodeling: the line that matters
Texas generally treats a contract for new construction — building a new structure, or a completed improvement to real property that did not exist before — differently from a contract to repair, remodel, or maintain something that already exists. On a new construction contract, a contractor is commonly treated as the consumer of the materials used, which generally means tax is owed on those materials at the point of purchase rather than charged separately to the customer on the finished job.
Repair, remodeling, and maintenance work is generally treated differently, and depending on how the contract is structured can result in sales tax being due on the labor and materials billed to the customer. Which treatment actually applies to a specific job is a question for the Comptroller's own published guidance and your accountant — the distinction is real and well established, but how it lands on your particular contract depends on its wording and structure, not just on what the job looks like from the outside.
Separated vs. lump-sum contracts
Beyond the new-construction-versus-repair line, Texas also distinguishes between a lump-sum contract, which bills one combined price for labor and materials together, and a separated contract, which itemizes labor and materials as distinct line items. The two can be taxed differently even for similar work, which is part of why two contractors doing comparable jobs can legitimately end up with different tax treatments, based purely on how their contracts happen to be written.
- A lump-sum contract bills one combined price covering both labor and materials
- A separated contract itemizes labor and materials as distinct amounts
- Which structure applies to your contract affects how tax is calculated — confirm the treatment with the Comptroller's guidance or your accountant
- Decide your contract structure deliberately, not out of habit, since it carries real tax consequences
Local rates on top of the state rate
Texas sales tax is not a single statewide number in practice. Cities, counties, transit authorities, and special-purpose districts can each add their own local rate on top of the state rate, within a legal limit on the combined total. That means the correct rate can differ between two job sites only a few miles apart, and a contractor working across several Texas counties cannot safely assume one rate applies everywhere they go. Confirm the combined state-plus-local rate for the specific jurisdiction where each job actually sits, rather than reusing the rate from your last job on the assumption that it still applies.
Materials bought for resale, and other exemption questions
Depending on how a contract is classified, a contractor may be able to purchase certain materials tax-exempt for resale rather than paying tax at purchase, with the tax instead collected downstream. Getting this wrong in either direction creates real exposure: claiming an exemption you did not qualify for is a problem at audit, and paying tax twice — once at purchase and again on the billed contract — is a quiet, ongoing cost that erodes margin without ever showing up as a single obvious mistake. Confirm which exemptions, if any, apply to your specific purchases and contract types directly with the Comptroller's guidance or your accountant, since misapplying a resale exemption is one of the more common and most expensive errors contractors make in this area.
Progress billing and tax on partial payments
Many residential and remodeling jobs in Texas are billed in draws tied to milestones rather than a single invoice at completion, and that raises the same question sales tax does at the contract level: whatever treatment applies to the job as a whole should generally be applied consistently across every draw, rather than worked out separately, and potentially inconsistently, each time a payment is requested.
A contractor who applies the correct treatment on the final invoice but handles the earlier progress draws differently has not solved the problem — they have moved it earlier, onto invoices that are considerably harder to correct once a client has already paid. Decide the treatment at the estimate stage, confirm it against current Comptroller guidance, and carry it through every draw on that job without re-deciding it each time.
If you work in Texas and other states, or across the border into Canada
Contractors who take work in Texas and other US states need a separate check for each one, because the new-construction-versus-repair distinction, the lump-sum-versus-separated contract rule, and local rate structures are all set independently, state by state. A rule that is correct in Texas may be wrong in Florida or California, and a rule correct in any US state does not translate to GST, HST, or PST in Canada, which runs on an entirely different structure. Set the jurisdiction correctly, per job, rather than assuming consistency across your whole book of work.
A short checklist before you quote a Texas job
This is the sequence worth working through, not a substitute for the Comptroller's own guidance or your accountant's advice on your specific contract.
- Confirm whether the job is new construction or repair/remodeling under current Comptroller guidance
- Decide, deliberately, whether the contract will be lump-sum or separated
- Confirm the combined state-plus-local rate for the job's specific jurisdiction
- Confirm whether any purchase-for-resale exemption actually applies before relying on it
- Keep a dated record of the treatment applied and the rate used, by job
Where this gets expensive to get wrong
The cost of misclassifying a contract is rarely a line item you notice right away. It shows up later, as a correction, as a dispute with a customer over who owed what, or as an unwelcome conversation during an audit, well after the job that caused it is finished and the crew has moved on. Getting the classification and the rate right at the quoting stage, and keeping a record of how each job was treated, is consistently cheaper than fixing it after the invoice has already gone out the door.
How BuildersBridge handles it
BuildersBridge applies sales tax automatically based on a job's location for US jobs, so a Texas job and a job in another state on the same account are not taxed by the same assumption carried over from the last quote. Bridge AI can draft the itemized estimate from a plain-language project description, and the tax applied to it follows the job's actual location rather than a rate someone has to remember to update by hand. The classification judgment — whether a specific contract is new construction or repair, lump-sum or separated, and whether an exemption genuinely applies — still belongs with you and your accountant; the platform applies the resulting rate consistently once that call has been made, on every job costed through completion.