Is labor taxable? It depends where you work

Contractor labor has no single U.S. sales-tax treatment. Check the state, whether the work is construction, repair or fabrication, and whether any exemption requires labor to appear separately on the bill. Whether you owe tax on the materials you install is covered in sales tax on materials versus labor.

Check the state's rules for your service

Start with the revenue department's guidance for the service you actually provide. Do not assume all labor is exempt or taxable. South Dakota, for example, generally taxes services but handles construction and realty improvements under its separate contractor's excise tax. The examples below show why one state's answer cannot settle another's.

Work on real property versus movable property

Fixing a washing machine is a service to tangible personal property — it is still the customer's movable thing when you leave. Installing a water heater, running a branch circuit or setting cabinets is work on real property: it becomes part of the building.

Many states tax those two categories under completely different rules. Within real property, states commonly split again.

Capital improvement versus repair. New York is the clearest published example. Its Tax Bulletin ST-104 sets three tests a capital improvement has to meet at once: it substantially adds to the value or appreciably prolongs the life of the property, it becomes part of or is permanently affixed to the property so removal would cause material damage to the property or item, and it is intended to be permanent. The customer documents it by giving the contractor Form ST-124, the certificate of capital improvement. New York also publishes a classification list, Publication 862, because the line is that hard to call.

Residential versus nonresidential. Texas splits here. In the version of Comptroller publication 94-116 published at the time of writing, labor to repair, remodel or restore residential real property is not taxable, while the total charge for remodeling, repairing or restoring nonresidential real property is taxable. New construction labor is treated as not taxable. Two nearly identical remodels, one in a house and one in a shop building, land on opposite sides.

Neither rule travels. New York's certificate means nothing in Texas, and a Texas residential exemption means nothing in Ohio.

Fabrication: the exception that catches shops

Even in states that leave installation and repair labor alone, labor that creates tangible personal property is often taxable. That is fabrication or processing labor, and it catches more contractors than you would think: a countertop shop cutting slabs, a sheet metal shop building duct, a cabinet shop, a welder making a handrail, a sign shop.

California Publication 108 distinguishes generally nontaxable repair labor from taxable labor that produces, fabricates or processes new tangible personal property. Construction work follows separate rules in Publication 9.

California's Regulation 1546 also has a parts rule for repairs: if parts' retail value is 10% or less of the total and they are not separately charged, the repairer is generally their consumer. Above that share, or with a separate parts charge, the repairer is their retailer. That test concerns tax on parts; it does not turn repair labor into fabrication.

A shop that fabricates and then installs may need to distinguish those activities. Use the state's construction rules if the finished item becomes part of real property.

The invoice test: separately stated or buried in one number

Plenty of labor exemptions have a condition attached — the labor is exempt if it is separately stated on the customer's bill. Minnesota's fact sheet on labor (FS152) treats repair labor as not taxable when it is separately stated from parts or materials. Combine the two into one number and the answer turns on how big the parts are: the sheet's own example is a jeweler who uses a $1 spring to fix a watch and bills one $10 charge for the whole repair — not taxable, because the spring is an insignificant share of the job, though the jeweler still owes tax on what the spring cost them. Make the parts a significant share of a combined charge instead, and the whole charge becomes taxable. Rolling everything into one number is not a safe way to protect the labor exemption once materials are a real part of what you billed.

This Minnesota rule concerns repair of movable property. It does not make construction labor taxable: the same fact sheet treats installing and repairing real property, including hot water heaters, separately.

Illustrative Minnesota movable-property repair: $900 in taxable parts sold to the customer and $1,500 in repair labor. Assume the parts are a significant share of the repair and use a fictional 7% combined rate:

In this example, separately stating repair labor changes the tax by $105. Do not apply the table to a construction contract or another state without checking its rules.

Getting the answer in writing

Start with your state revenue department's contractor publication. Most sales-tax states publish one for construction contractors that addresses real property, repair versus improvement and separate statement directly. Texas has 94-116; New York and California publish their own. Pull it from the agency site, because these get revised and an old PDF is how people end up two rule changes behind.

Then ask for a written determination on anything the publication does not settle: fabricate-and-install, residential and commercial work on one contract, a job spanning a state line. Most states will issue one on a specific fact pattern. What a phone line told you is not something you can show an auditor.

Ask four things: whether your labor is an enumerated taxable service there, whether any of it counts as fabrication rather than installation or repair, whether your labor exemption requires separate statement, and what documentation the customer owes you when the state splits by use or by project type.

Use the written answer to set your invoice format, and check again when your scope or the rules change.

Keeping labor on its own line

In DoneQuote, put labor and materials on separate quote lines and set each line's tax rate to match the treatment you verified. Review the lines and tax before sending, then carry the approved information into your invoicing tool. A saved service rate does not decide which legal rule applies to the job.