TL;DR: On the wire, conduit, and other materials you install, you are generally the consumer and tax applies when you buy them. On lighting fixtures, transformers, and switchgear, you are the retailer, so tax applies to the fixture sale. A marked-up “sales tax” charge on materials can make you the retailer of those materials.
The question “do electricians charge sales tax” has two different answers on the same invoice. On the wire, you already paid the tax at the supply house and the customer owes nothing more. On the light fixture, you are the retailer and tax applies to your sale of it. Writing one “sales tax” line across the whole job can quietly turn you into the retailer of everything on it.
You are the consumer of the wire
California Department of Tax and Fee Administration Regulation 1521, “Construction Contractors,” treats electrical work as construction contracting. CDTFA Publication 9, “Construction and Building Contractors,” defines a construction contract as an agreement to erect, construct, alter, or repair a building or other improvement to real property. That includes furnishing and installing electrical system property, wires, ducts, pipes, vents, and other conduit embedded in or securely affixed to the land or structure.
The rule is direct. Regulation 1521 says:
“Construction contractors are consumers of materials which they furnish and install in the performance of construction contracts.”
Materials are property that becomes an integral and inseparable part of real property. Regulation 1521 Appendix A lists these electrical items as typical materials:
- “Electric wiring and connections”
- “Conduit”
- “Builders’ hardware”
- “Power poles, towers, and lines”
- “Photovoltaic (solar) integrated roofing tiles and skylights”
You pay sales tax when you buy those materials. If you bought them without California tax, use tax applies to your use of them. You do not add a second sales tax charge to the customer merely because you separately show your material cost on the invoice.
A lump sum contract stays a lump sum contract even if your invoice lists materials, fixtures, labor, and tax separately. Publication 9 states:
“A lump sum contract does not become a time and material contract when the amounts attributable to materials, fixtures, labor, or tax are separately stated in the invoice.”
That is why a service and repair contract with a stated total is treated as a lump sum. See whether you should charge for an electrical estimate. Build that stated total from your real costs, including tax, as discussed in how to price electrical jobs without underbidding.
You are also the consumer of business supplies and tools. Publication 9 lists tools and parts for tools as supplies. Tax applies to those purchases. Construction contractors should not buy them for resale.
There is one unpleasant consequence when the account goes bad. Because you are the consumer of materials installed under the contract, you cannot claim a bad debt deduction for those materials on your sales and use tax return. Publication 9 gives a $15,000 lump sum example with $2,000 of material cost and $5,000 of fixture cost. The maximum bad debt claim is $5,000, the taxable portion of the contract. A mechanics lien is a separate collection tool.
You are the retailer of the fixture
Fixtures are different. Regulation 1521 defines them as items accessory to a building or structure that do not lose their identity as accessories when installed.
Appendix B lists these typical electrical fixtures:
- “Lighting fixtures”
- “Transformers and switchgear”
- “Electric generators (affixed to and accessory to a building, structure or fixed works)”
- “Burglar alarm and fire alarm fixtures”
- “Air conditioning units”
- “Signs”
Regulation 1521 states:
“Construction contractors are retailers of fixtures which they furnish and install in the performance of construction contracts and tax applies to their sales of the fixtures.”
The taxable price depends on the contract. If the contract states the selling price of the fixture, tax applies to that price. If no selling price is stated, including on a lump sum contract, the taxable retail selling price is the fixture’s cost to you. For a manufactured fixture, that cost includes the manufacturer’s excise tax or import duty imposed on the sale to you.
So on a lump sum job, tax on a purchased lighting fixture is measured by what you paid for the fixture, not by the marked-up number buried inside your lump sum. On a time and material contract where you state a selling price, tax applies to that stated price.
Solar work contains both categories. Publication 9 says a contract to furnish and install a solar energy system is a construction contract involving materials and fixtures. Materials include wiring, wiring harnesses, strapping, roof mounting systems, and photovoltaic integrated roofing tiles and skylights. Fixtures include rack-mounted solar panels, inverters, transformers, batteries, terminal boxes, and DC and AC disconnect boxes. A contractor furnishing and installing a solar energy system that includes fixtures must hold a seller’s permit. See what to ask before booking solar and battery calls.
Do not guess about every electrical part. The typical-item appendices do not name a residential panelboard, circuit breaker, receptacle, or wall switch. Neither appendix tells you how to classify those items. Ask CDTFA’s Customer Service Center at 1-800-400-7115.
The tax line can make you the materials retailer
A time and material contract separately charges for materials or fixtures and for installation or fabrication. Under that contract, you are generally still the consumer of materials. Tax is owed on your purchase price.
The trap is the invoice language. Publication 9 says:
“If the contractor bills their customer for an amount for sales tax computed on the marked-up billing for materials, it is considered a time and material plus tax contract.”
At that point, you are the retailer of the materials. The taxable amount is the amount on which you charged tax reimbursement. That means your gross receipts from selling the materials, including the marked-up price.
Regulation 1521 states the same rule. If you bill an amount for “sales tax” computed on your marked-up billing for materials, you are presumed to be the retailer unless you have convincing evidence otherwise.
You can also become the materials retailer if the contract explicitly provides for transfer of title before installation and separately states the sale price of the materials apart from installation. Once that happens, you need a seller’s permit and a sales tax return. You may issue a resale certificate to your supplier for materials you sell in that way.
Fabrication labor has its own rule. If you are the consumer of the materials and fabricate them before installation, no tax is due on your labor charge. Only the actual material cost is subject to tax.
Repair contracts can change the result. Repairing a fixture in place, or reaffixing a fixture to the realty, is a construction contract. You are the retailer when you replace the fixture or separately bill the sale price of parts from repair labor. You are the consumer when the parts are furnished under a lump sum construction contract to repair the fixture. Put the material and labor treatment in the estimate before the work starts. This guide to writing an estimate that survives a change order covers where those lines belong.
The jobsite sets the tax rate
The jobsite is your place of business for tax purposes. CDTFA’s Tax Guide for Construction Contractors states:
“You owe the tax rate in effect where you install your materials, fixtures, and equipment.”
The statewide tax rate is 7.25 percent under CDTFA’s rate page effective October 1, 2026. Local district taxes add between 0.10 percent and 2.00 percent in different areas. CDTFA provides an online lookup for the current combined rate at a specific street address.
Buy material in one county and install it in another, and the jobsite can create a difference. Publication 9 gives this example: materials bought tax-paid at 7.75 percent and installed where the rate is 8.75 percent create an additional 1.00 percent district use tax. If you paid 8.75 percent and install at 8.25 percent, there is no additional liability and no credit for the 0.50 percent difference on materials.
Fixtures have a different credit rule. If you bought fixtures tax-paid in a district and install them at a jobsite without that district tax, or with a lower rate, you receive a credit for the full district tax paid at purchase.
A district tax can also apply when you pick up materials or fixtures in a district, even if the jobsite is outside that district.
The address is already part of the job record before the truck rolls. Wirewoman’s SMS summary arrives within 30 seconds of hang-up with the caller’s address and the problem in the caller’s own words. You can look up the jobsite rate from your phone in the driveway or from the dashboard log the night before, instead of waiting until the supply house receipt is in the glovebox.
A qualified fixed-price contract can be exempt from district tax increases enacted after the contract date. The contract must be entered before the new district tax takes effect, require a fixed amount, bind all parties, and specifically state the sales tax amount or rate. Put the rate in the contract. Do not leave that protection to an invoice line written later.
Online orders still create a tax bill
Use tax applies when you buy taxable items from an out-of-state vendor without California sales tax and use them in California. For materials bought without tax from an out-of-state vendor for use rather than resale, the tax liability arises when the materials enter California.
A contractor that does not need a seller’s permit may still need to register as a qualified purchaser. From January 1, 2024 through December 31, 2028, that rule covers a person who makes more than $10,000 in purchases subject to use tax during a calendar year, excluding vehicles, vessels, and aircraft, when the tax has not otherwise been paid to a California retailer or authorized collector. On January 1, 2029, the definition returns to a person receiving at least $100,000 in gross receipts per calendar year from business operations.
A contractor making frequent taxable out-of-state purchases but not required to register as a qualified purchaser may register for a California consumer use tax account.
Do not use a resale certificate for ordinary materials you will install. Contractors are generally consumers of materials furnished and installed to improve real property. If you buy materials under a resale certificate and later commit them to the contract, tax is due for the period of commitment. Removing the materials from inventory and delivering them to the jobsite is a commitment. You cannot wait until the project is complete to report and pay tax.
A subcontractor also may not accept a resale certificate from a prime contractor for materials the subcontractor furnishes and installs in a construction contract. A subcontractor furnishing and installing fixtures for a prime is the retailer of those fixtures. The prime is the consumer, so no additional tax is due under the prime’s contract with the owner.
Write the invoice to match the contract
Write a lump sum as a lump sum. Itemizing the internal amounts does not turn it into time and material. If you bill a marked-up materials price and add a tax line to that price, treat the transaction as a retail sale. Do not call it a consumer purchase after the invoice makes you the retailer.
State the tax rate in a qualified fixed-price contract. Track each item as purchased tax-paid or without tax, consumed, sold as a taxable sale, or sold or used in a nontaxable transaction. Those are the records Publication 9 says you should keep.
Your inbound call record is the beginning of that job file. Wirewoman answers in 2 seconds, day or night, logs every call to a dashboard, and texts the job summary within 30 seconds of every answered call. Sparking, smoke, a burning smell, or full power loss routes to your cell under the escalation rules you set. She does not compute tax or quote a price. The number on the invoice is yours.
Before you send the next invoice, classify each line as material or fixture, check the jobsite rate, and make the tax treatment match the contract you actually wrote.
