Labor is taxable in Alabama when it produces a new item of tangible personal property, and generally not taxable when it repairs or installs an existing one. The catch is on the invoice: repair and installation labor only stays exempt if the bill separates labor charges from parts charges. Bundle them into a single line, and the whole amount becomes taxable.
Fabrication Labor Is Taxable, No Matter How You Bill It
When a business takes raw materials and makes, produces, or fabricates them into a new item to a customer’s order, the full charge is subject to Alabama’s 4% state sales tax, labor included. Alabama Administrative Code Rule 810-6-1-.91 is direct on this point: the seller cannot deduct production or fabrication costs, including labor, from the taxable amount.1Alabama Administrative Code. Alabama Administrative Code 810-6-1-.91 – Made-To-Order and Custom Sales
Splitting labor onto its own invoice line changes nothing here. A metal fabricator who bills $800 for steel and $1,200 for welding labor owes tax on the full $2,000. The same result holds for a cabinet maker, a custom drapery shop, or any shop building something to a customer’s specifications. The labor is treated as part of the production cost of the finished item.1Alabama Administrative Code. Alabama Administrative Code 810-6-1-.91 – Made-To-Order and Custom Sales
Rule 810-6-1-.84 defines fabrication labor as any labor incidental to making, producing, or fabricating a “new or different” item of tangible personal property before the customer takes title. “New or different” is judged from the buyer’s perspective. The fact that raw steel passed through several processing steps doesn’t matter if what the buyer receives is a finished product they couldn’t have pulled off a shelf.2Legal Information Institute. Alabama Administrative Code 810-6-1-.84 – Labor or Service Charges
Repair and Installation Labor Is Exempt If You Bill It Right
Labor spent repairing or altering existing tangible personal property, restoring it without producing new parts, is not taxable. The parts installed remain taxable, but the labor to install them is not, provided one condition is met: the charges for parts and the charges for labor have to appear separately on the invoice.2Legal Information Institute. Alabama Administrative Code 810-6-1-.84 – Labor or Service Charges
Take an alternator replacement. If the invoice shows $100 for the alternator on one line and $150 for labor on another, the customer pays sales tax on $100. If the invoice reads “alternator replacement — $250” as a single line, sales tax applies to the entire $250.3Alabama Department of Revenue. Alabama Administrative Code 810-6-1-.07 – Sales of Automotive Vehicle Parts by Automotive Vehicle Repairman, Repair Shops and Garages
Installation charges work the same way. When a seller has a standard retail price for a product and charges separately for installation, the installation labor is not subject to sales tax, as long as the billing and books both reflect the separation. Quote a lump sum covering product and installation together, and the whole amount is taxable.
Your Books Have to Match Your Invoices
The separation isn’t just about what the customer sees. Internal records need to support the split too. A shop that bundles charges on invoices for the sake of simplicity is, in effect, volunteering exempt labor as taxable revenue. Rule 810-6-1-.07 states this plainly for auto repair: the full invoice amount is subject to tax when parts are not separately stated from labor.3Alabama Department of Revenue. Alabama Administrative Code 810-6-1-.07 – Sales of Automotive Vehicle Parts by Automotive Vehicle Repairman, Repair Shops and Garages
Fabricated Parts Inside a Repair Job
This is where shops get tripped up. If a repairman fabricates a custom part as part of a repair, the labor to make that part is taxable, even though the surrounding job is a repair. The total charge for the fabricated part, materials plus fabrication labor, is subject to sales tax regardless of how it’s broken out on the invoice. Splitting the fabrication labor onto its own line doesn’t rescue it, because that labor produced a new item.2Legal Information Institute. Alabama Administrative Code 810-6-1-.84 – Labor or Service Charges
Picture a welder who fabricates a custom bracket to fix a piece of industrial equipment. The bracket itself is a new item of tangible personal property. Its materials and fabrication labor are taxable. The labor to remove the broken bracket and install the new one, billed on a separate line, stays exempt. A correct invoice for this job has three components: the taxable fabricated bracket, the taxable price of any other replacement parts, and the exempt installation labor. Most audit adjustments in repair shops come from getting that split wrong.
Real Property Work Sits Outside This Framework
Labor performed on real property, such as constructing buildings, pouring foundations, or renovating kitchens, is not covered by the retail sales tax framework at all. Contractors and builders aren’t selling tangible personal property to customers; they’re improving real estate. Under Alabama’s system, the contractor is treated as the consumer of the building materials. The contractor pays sales tax when buying lumber, concrete, wiring, and other supplies, and does not collect sales tax from the property owner on the finished project.
Alabama’s rules define “building materials” broadly as tangible personal property used by builders, contractors, or landowners to make improvements, additions, alterations, or repairs to real property in a way that makes the property part of the realty. Lumber and cement are the obvious examples, but electrical supplies and plumbing fixtures qualify once they’re permanently affixed to a structure.
The distinction matters for businesses that operate on both sides. A sheet metal shop that fabricates ductwork and sells it to a contractor is making a retail sale of fabricated personal property, and the full price with labor is taxable. That same shop hired as a subcontractor to install ductwork in a building is improving real property and pays tax only on the materials it buys.
Public highway, road, bridge, and street construction is treated separately again, under a 5% contractor’s gross receipts tax on payments received rather than the standard sales tax.
Pure Services Aren’t Taxed at All
Alabama’s sales tax is a privilege tax on the retail sale of tangible personal property. Pure services that don’t involve creating or transferring a physical product fall outside it. A lawyer drafting a contract, an accountant preparing a return, or a consultant advising on strategy isn’t selling tangible property, and none of those transactions trigger sales tax. The fabrication-versus-repair question only arises once a physical item is part of what the customer is buying.
Why Getting the Classification Right Matters
Alabama’s standard audit lookback is three years from either the return due date or the filing date, whichever is later. That window extends to six years if a business underreports its taxable base by more than 25%, a threshold that can be crossed quickly when fabrication labor gets treated as exempt repair labor across many jobs. If no return is filed or a fraudulent return is submitted, there’s no time limit.
Late filings also carry a 10% penalty on the tax due for failure to file on time (minimum $50), a separate 10% penalty for failure to pay on time, and interest at the department’s current rate.4Alabama Department of Revenue. Is There a Penalty Imposed for Not Timely Filing and Paying the Sales Tax Due?
For a fabrication shop or repair business, the strongest audit defense is clean job-by-job records showing how each transaction was classified, backed by invoices that correctly separate exempt labor from taxable charges. Alabama specifically requires books to reflect the separation between tangible property sold and labor or installation charges.3Alabama Department of Revenue. Alabama Administrative Code 810-6-1-.07 – Sales of Automotive Vehicle Parts by Automotive Vehicle Repairman, Repair Shops and Garages The rule is easy to state and easy to miss: if the labor made something new, tax it; if the labor fixed or installed something, put it on its own line and don’t.