When a service invoice is the right choice
Use it when the main thing you are charging for is work you carried out: a repair, an installation, a tune up, an inspection or a maintenance visit. Parts can appear on it, but they support the job. If you mostly sell products, a sales invoice fits better, and if you bill purely by time, an hourly layout is clearer.
For field work, it doubles as a short record of what was found and fixed.
What to put on an invoice for services rendered
Beyond your business details, the customer, an invoice number and a due date, a service invoice should let someone who was not there understand the visit. That means the date, the place, the problem, the fix and how each charge was worked out. These fields cover it.
- Work order or job number, matching the booking or dispatch note.
- Date of service and, for longer jobs, arrival and finish times.
- Service address, if it differs from where the bill goes.
- Problem reported and work performed, in plain words, such as “door would not close, broken torsion spring”.
- Labor, as a flat job price or hours at a rate.
- Parts, each with a short name and quantity.
- Trip or service call fee, if your price list includes one.
- Workmanship warranty, only if you offer one, with its length.
Service invoice vs sales invoice vs receipt
The difference is what you are billing and when the money moves. A service invoice bills completed work, a sales invoice bills goods, and a receipt confirms a payment already made.
| Document | Bills for | Typical lines | Sent |
|---|---|---|---|
| Service invoice | Work carried out | Call fee, labor, parts used | After the job, payment due later or on the spot |
| Sales invoice | Products supplied | Item codes, quantities, unit prices, shipping | When goods ship or are handed over |
| Receipt | Nothing new; it confirms payment | Amount paid, method, date | Once the customer has paid |
If you sell products by the box, the sales invoice layout has columns for item codes. If the customer only wants hours, use the hourly invoice template.
Sales tax on a service invoice in the US
There is no single national rule. USA.gov explains that most states and local governments charge sales tax, at different percentages on different goods, and not at all on some items. Whether your labor, your parts, both or neither are taxable depends on the state, and sometimes the city, where you do the work.
As one example, California’s tax agency gives a statewide rate of 7.25%, with local district taxes from 0.10% to 2.00% added in most areas. Check your own state’s tax agency before you add a rate. Our sample leaves tax blank for that reason, and the generator lets you tax some lines and mark others exempt. The guide to sales tax on invoices shows how to lay the lines out.
Service invoice example: a garage door repair
Here is a made up service invoice from a garage door company in Phoenix, Arizona, for a homeowner whose door stopped closing. The technician found a broken spring and worn rollers. Labor is billed by the hour, parts are listed separately, and all prices are examples only.
| Line | Qty | Rate | Amount |
|---|---|---|---|
| Service call and diagnosis | 1 | $89.00 | $89.00 |
| Labor, replace torsion springs and rollers (hours) | 1.5 | $110.00 | $165.00 |
| Torsion springs, oil tempered, pair | 1 | $148.00 | $148.00 |
| Nylon rollers, set of 10 | 1 | $62.00 | $62.00 |
| Safety sensor realignment and lubrication | 1 | $45.00 | $45.00 |
| Total before any sales tax | $509.00 | ||
The notes record the fault and the 90 day workmanship warranty the company offers. If the homeowner pays the technician on site, mark the invoice paid and send a receipt as well.
Service invoice mistakes that lead to disputes
Most arguments over a service bill are about what happened during the visit, not about the price list. An invoice that records the visit clearly answers those questions before they are asked. Watch for these gaps.
- One lump sum. “Repair, $509” invites a call. Split the call fee, labor and parts.
- No fault description. If the same problem returns, you need proof of what you fixed last time.
- No date of service. Customers with several visits cannot tell which one this is.
- Billing a week later. Send it the same day while the job is fresh in everyone’s mind.
- Extra work nobody approved. Get a yes before replacing parts beyond the original fault.
Download the service invoice template
Grab the Word, Excel or PDF version from this page, or open the garage door repair sample in the generator and change the lines to suit your trade. The generator works in your browser, adds your logo, and saves a PDF you can email or print for the customer.
Browse the rest of our invoice templates for every kind of business if you need a different layout. If you send many service invoices and want to track who has paid, WhizInvoice can do that on its free plan.
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