New Jersey Sales Tax for Contractors: Labor, ST-8, Capital Work
Short answer: New Jersey taxes contractor labor, not contractor materials. You are the final consumer of materials and pay 6.625% sales tax to your supplier on materials and supplies, with narrow exceptions. Whether you charge the customer tax depends on the job: exempt capital improvements are untaxed if the owner gives you Form ST-8, while repairs, maintenance, installation, and New Jersey’s list of taxable capital improvements are taxed on the labor portion.
New Jersey is one of the states where the “services aren’t taxed” shorthand falls apart for construction. The New Jersey Division of Taxation sets out the regime in Tax Topic Bulletin S&U-3, Contractors and New Jersey Taxes, revised May 2025 and the edition quoted throughout this page; the IRS handles the federal side. Collecting this tax is a separate registration from home improvement contractor registration, covered in New Jersey contractor license requirements. Getting the classification wrong is the expensive part, so this page starts there.
Are contractor services taxable in New Jersey?
Some of them. The Division splits contractor work into three buckets, and the bucket decides what you charge.
| Type of work | Charge the customer sales tax? |
|---|---|
| Exempt capital improvement | No — collect Form ST-8 instead |
| Taxable capital improvement | Yes, on the labor portion |
| Repair, maintenance, or installation service | Yes, on the labor portion |
A capital improvement increases the capital value or useful life of the land or buildings, and the item installed must be permanently attached. A repair maintains existing value without adding value or prolonging life. Maintenance preserves existing condition.
Exempt capital improvements include a new roof, new siding, a paved driveway, a new deck, rewiring, and the initial painting of new construction. Repairs include fixing loose bath tiles, patching driveway potholes, pointing bricks, and fixing a leaky roof. Maintenance includes mowing lawns, snow shoveling, power washing, and repainting — so the first painting of new construction is exempt while repainting an existing house is taxable.
Close calls turn on the extent of the work, and S&U-3 gives the test directly: replacing a few loose bath tiles or a portion of a leaky roof is a repair, but replacing all the tiles or the entire roof with upgraded or improved materials is an exempt capital improvement. The same roofer, on the same house, is taxable on labor for a patch and exempt for a full tear-off.
Which capital improvements are still taxable in New Jersey?
This is the trap, and it is specific to New Jersey. Some work meets the definition of a capital improvement and is still taxable. S&U-3 lists them:
- Planting shrubbery, trees, hedges, and plants
- Seeding, sodding, or grass plugging a new lawn
- Clearing and filling land associated with that seeding or planting, including tree and stump removal
- Installing a hard-wired security, burglar, or fire system
- Installing carpeting and other flooring
- Installing permanently affixed signs (taxable effective October 1, 2022)
If you are a landscaper, flooring installer, alarm installer, or sign company, do not reach for Form ST-8 on the strength of the work being permanent. The Division is explicit that ST-8 may not be issued when work results in a taxable capital improvement. Floor covering dealers get an extra layer: the covering and the installation are separate transactions, taxed on both.
Who pays the tax on materials?
You do, at the register, on the way in. For New Jersey sales tax purposes a contractor is the actual consumer of materials and supplies used in improving, altering, or repairing the real property of others. Sales of materials to you are retail sales and therefore taxable — the law does not grant you resale treatment. That holds for subcontractors, and whichever bucket the job falls into.
The exceptions are narrow: materials for exclusive use on the real property of an exempt organization, a qualified business in an Urban Enterprise Zone, or a qualified housing sponsor, documented with Form ST-13 or Form UZ-4; or a direct payment permit. Separately, fabricator/contractors (who both build and install items such as kitchen cabinets) may issue resale certificates; every other contractor pays at purchase.
Two cost categories are always taxable to you: construction equipment purchases, leases, and rentals; and four bought-in services — temporary lighting, temporary fencing, scaffolding installation, and site cleanup.
How do you show sales tax on a New Jersey invoice?
This is where money is lost quietly, and the rule is unforgiving.
On a taxable job, if you separately itemize materials and labor, the only amount you may deduct from the receipt is the separately stated pass-through of the actual cost of materials — and that cost may include the sales tax you already paid on them. The remainder is labor and is taxed.
If you do not itemize on a taxable job, the entire receipt is subject to tax. Bill $6,000 as one line and New Jersey taxes all $6,000, including materials you already paid tax on. Bill it as $2,400 materials at cost plus $3,600 labor and only the $3,600 is taxed. The difference is purely invoice layout, which is why what to include on an invoice is not cosmetic here.
On an exempt capital improvement the treatment inverts: you charge no tax at all, itemized or not. What you need instead is a completed Form ST-8, Certificate of Exempt Capital Improvement, issued by the property owner and kept on file. The owner need not be registered with the State to issue one, and you may supply the form yourself.
When do you register, file, and remit?
Registration comes early: sellers must register for tax purposes at least 15 business days before starting business, using Form NJ-REG through the Division of Revenue and Enterprise Services. S&U-3 states plainly that contractors working in New Jersey must be registered and collect tax on labor when required.
| Filing | When |
|---|---|
| ST-50 quarterly return | Every quarter, even with no sales and no tax due |
| ST-51 monthly remittance | Only if you collected over $30,000 in the prior calendar year, and that month’s tax exceeds $500 |
| Due date | 20th of the month after the period, filed and paid electronically |
One accounting rule catches cash-basis thinking. Sales tax reporting must use the accrual method: receipts are reported in the period the sale took place, no matter when — or whether — the customer pays. You can owe tax on an unpaid invoice, which makes how to get clients to pay a cash-flow problem with a filing deadline attached.
Subcontractors face a rule with a trap on both sides. The default is that a subcontractor performing taxable services for a prime contractor does not bill the prime for sales tax on labor — the prime collects it from the property owner, and the subcontractor keeps records showing why no tax was charged. The exception is the one that catches people: anyone performing a taxable capital improvement must collect sales tax from the person the service is performed for, even when that person is another contractor. Flooring, landscaping, alarm and sign work billed sub-to-prime carries tax; ordinary repair labor billed sub-to-prime does not. Staying unregistered also has a price — payers other than governmental entities, homeowners, and tenants must withhold New Jersey Gross Income Tax at 7% from payments to unregistered, unincorporated contractors.
Which New Jersey jobs escape the tax entirely?
Residential heating systems. A contractor may not charge sales tax on parts or labor when maintaining, servicing, or repairing a residential heating system unit, provided it serves no more than three families who live independently and do their own cooking on the premises. Boiler and furnace service on a typical New Jersey one-to-three family house falls outside the tax.
Exempt customers. When you work on property of a New Jersey or federal governmental agency, a qualifying exempt organization, a UEZ-qualified business, or a qualified housing sponsor, both labor and materials are exempt, whatever bucket the work falls into.
The Urban Enterprise Zone version has a ceiling worth knowing before you quote. Since 1 January 2022, only the first $100,000 of taxable purchases of construction materials, supplies and services made by all contractors working on a qualified business’s property in a calendar year are exempt. Once that total is reached the qualified business can no longer issue Form UZ-4 for the rest of the year, and purchases revert to taxable — including yours, if you arrived late on a long job.
Keeping the paperwork this regime demands
New Jersey generates three stacks of documents: supplier receipts proving the tax you paid on materials, ST-8 certificates proving why you did not collect tax on exempt jobs, and invoices whose itemization determines what you owe on taxable ones — all of which must survive a later audit.
Keel is built for that stack. It is an iOS app working entirely on the device — no account, no bank connection, no cloud, and an App Store privacy label of “Data Not Collected.” Receipt capture runs on-device through Apple Intelligence, so supplier receipts and the tax on them are recorded when you leave the counter. Invoices are PDFs with custom numbering, your logo, and a payment-link QR code, so separate material and labor lines become a habit. Underneath is an append-only hash-chained ledger, plus mileage logging, reports, an Accountant Pack, and a one-file yearly export. Free covers unlimited invoices, receipts, and mileage; Keel Pro is a one-time $249.99 lifetime purchase.
Keel does not file for you. It will not submit your ST-50 or decide whether a job is an exempt capital improvement. It is a record keeper; the classification calls stay with you and your accountant, alongside a habit from contractor receipt organizer.
Frequently asked questions
What is the New Jersey sales tax rate for contractors?
6.625%. The Division of Taxation states that New Jersey assesses a 6.625% sales tax on sales of most tangible personal property, specified digital products, and certain services unless specifically exempt, and its rate page was current at the end of June 2026. Contractors meet it twice: paying it to suppliers on materials, supplies, and equipment, and collecting it from customers on the labor portion of taxable jobs.
Do I charge New Jersey sales tax on labor?
Yes, on taxable work. Labor is taxed on repairs, maintenance, installation services, and New Jersey’s taxable capital improvements such as flooring, landscaping, alarm systems, and permanently affixed signs. Labor is not taxed on an exempt capital improvement, provided the owner gives you a completed Form ST-8 to keep on file.
What is Form ST-8 used for?
Form ST-8, the Certificate of Exempt Capital Improvement, is issued by the property owner to the contractor when work results in an exempt capital improvement. It documents why you did not collect tax on the labor portion. The owner need not be registered with the State, and it may not be used for taxable capital improvements.
Can I buy materials tax-free in New Jersey as a contractor?
Generally no. New Jersey treats the contractor as the final consumer of materials, so you pay sales tax at purchase. The exceptions are narrow: work for exempt organizations, governmental entities, UEZ-qualified businesses, or qualified housing sponsors documented with Form ST-13 or UZ-4, a direct payment permit, or fabricator/contractor status.
Do I have to itemize materials and labor on my invoice?
Not legally, but skipping it is expensive. On a taxable job, failing to itemize makes the entire receipt subject to sales tax. Itemizing lets you deduct the separately stated pass-through of actual material cost, including tax you paid on it, so only the labor remainder is taxed. On exempt capital improvements, itemization changes nothing.
Do subcontractors collect New Jersey sales tax from general contractors?
Only when the work is a taxable capital improvement. Then the subcontractor must collect sales tax from the person the service is performed for, whether that is another contractor or the owner. On ordinary taxable services the subcontractor does not bill the prime for tax — the prime collects from the owner. Subcontractors pay tax on their own materials either way.
This article is general information, not legal or tax advice. Rules change — confirm with the authority named above.
How do I bill for it?
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