Plumber Invoice Template: Service Call, Labor, Parts & Warranty
A free plumber invoice template with line items for service calls, hourly labor, parts markup, and warranty language — plus the one line that reduces callbacks.
A plumbing invoice has to do two jobs at once: bill the customer for the work and protect you if something goes wrong three weeks later. Every line on the invoice is either a dollar amount or a warranty boundary. This guide walks through both sides — a complete sample invoice for a standard service call, the warranty language that stops 90% of callback disputes, and how to price parts markup without looking like you’re gouging.
Want to skip the reading? Open the template in the editor, swap your company name and rates, and download the PDF.
The standard service-call invoice
Here’s an invoice for a typical residential job: a leaking kitchen faucet, diagnosed and replaced in about 2.5 hours on site, with a new Moen mid-grade faucet installed.
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Service call-out — diagnosis & assessment | 1 | $95 | $95.00 |
| Licensed plumbing labor | 2.5 | $110 | $275.00 |
| Parts — Moen Arbor kitchen faucet | 1 | $220 | $220.00 |
| Parts — supply lines & shut-off valves | 1 | $35 | $35.00 |
| Disposal — old faucet & packaging | 1 | $20 | $20.00 |
| Subtotal | $645.00 | ||
| Tax (8.25%) | $53.21 | ||
| Total | $698.21 |
Notes on the invoice: 30-day warranty on labor. Manufacturer warranty on parts (Moen: limited lifetime). Before-and-after photos available on request. Payment due on completion.
Terms: Cash, card, check, or bank transfer accepted. $35 NSF fee on bounced checks. Payment issues should be raised within 7 days of service.
The five line items every plumber invoice needs
1. Service call-out fee. This is the fee for showing up and diagnosing the problem. It’s non-refundable and it’s the reason you don’t drive 40 minutes to a house just to be told “it fixed itself.” Standard range: $75–$125 depending on your market. Always put this on the invoice as its own line, even if you offered a “free estimate” and it rolls into the labor total — the customer needs to see that the call-out was its own cost.
2. Hourly labor (in quarter-hour increments). Don’t round to the nearest hour. 2.5 hours at $110 is honest; 3 hours at $110 when the job was 2 hours 10 minutes is how you earn one-star Google reviews. Use 0.25-hour (15-minute) increments and the customer will read the invoice as fair.
3. Parts, itemized. Don’t write “Parts: $255.” Write “Moen Arbor kitchen faucet: $220” and “Supply lines & shut-off valves: $35.” Customers who can verify the part online feel respected, not ripped off. If you mark parts up 20–40% over your trade cost (which is normal), the customer is paying retail and has no grounds to dispute.
4. Disposal fee. A separate $15–$25 line for hauling away the old part, the packaging, and any dirty water. This pays for the landfill trip, the shop rag, and the garbage bag. Small number, high perceived fairness.
5. Warranty language. Not a dollar line — a text note on the invoice. “30-day warranty on labor. Manufacturer warranty on parts.” This is the single most important piece of copy on the invoice because it caps your warranty obligation in writing.
Parts markup — how much is fair?
Plumbers mark up parts. So do electricians, HVAC techs, mechanics, and general contractors. The markup pays for:
- Trips to the supply house when the job needs an unexpected part
- Warranty replacement when a part fails and you replace it under your own labor warranty
- Carrying cost of the stocked parts in your truck inventory
- Markup protection against cost volatility — copper and brass prices move fast
Standard residential markup: 30–50% above trade cost, which usually lands within 10–20% of retail.
Commercial markup: 15–25% because commercial clients have procurement teams that know prices.
Large specialty parts (water heaters, pumps): 20–30% in markup.
The rule of thumb: if the customer can look up the part on Home Depot’s website and see you charged 2× that price, you have a problem. If you charged roughly Home Depot retail, you’re fine. Your margin comes from the labor and the service call, not from a ridiculous parts markup.
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Example 2 — Emergency after-hours call
Saturday night, 9pm, burst pipe under a kitchen sink:
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Emergency call-out (after-hours rate) | 1 | $175 | $175.00 |
| Emergency labor (1.5× standard rate) | 2 | $165 | $330.00 |
| Parts — shut-off valve, fittings, copper pipe | 1 | $78 | $78.00 |
| Parts — sweep & sealant supplies | 1 | $22 | $22.00 |
| Water damage mitigation — wet-vac & cleanup | 1 | $60 | $60.00 |
| Disposal | 1 | $25 | $25.00 |
| Subtotal | $690.00 | ||
| Tax (8.25%) | $56.93 | ||
| Total | $746.93 |
Why 1.5× labor instead of 2×. 2× is legal and common, but 1.5× gets accepted without complaint. The calculation is simple: at 2×, you make more money on one angry customer; at 1.5×, you make less per job but more referrals from happy customers who felt it was fair. Over a year, 1.5× usually wins.
Warranty language — what to actually write
The warranty section on a plumbing invoice should be three sentences, no more:
Warranty. 30 days on labor from date of service. Parts are covered under manufacturer warranty only. Warranty void if subsequent work by another party modifies or damages the repair.
Why 30 days, not 90: a 90-day warranty gives customers 3 months to blame you for unrelated problems. 30 days is enough to catch installation defects and short enough to protect you from “my water heater failed two months after you fixed my sink” claims.
Why “manufacturer warranty only” on parts: you’re not the manufacturer. If a Moen faucet fails after 6 months, Moen replaces it, not you. Make this explicit so the customer doesn’t expect you to eat a replacement cost that the manufacturer will cover.
Why the “voided by third-party work” clause: if another plumber or a homeowner touches your repair and breaks it, that’s not your problem. The clause moves the liability back to whoever did the modification.
Payment terms that plumbers actually use
Plumbing is different from freelance work — payment is usually expected on completion, at the door, before you leave. The terms to write on the invoice:
- Payment due on completion — not “Net 30”, not “Net 14”
- Accepted methods: cash, card, check, bank transfer (list all of them)
- $35 NSF fee on bounced checks — stated explicitly, enforced consistently
- Disputes must be raised within 7 days — caps your liability window
If you do extend terms to a commercial client (property management, multi-unit landlord), bump to Net 15 — not Net 30 — and include a 1.5% monthly late fee. Commercial clients stretch payment terms; your terms should resist the stretch.
Common mistakes on plumbing invoices
No invoice number. The IRS and your bookkeeper both require a sequential numbering system. Pick a format (INV-0001 or 2026-0001) and stick to it. We have a full invoice number best practices guide if you’re starting from scratch.
No customer signature line on the paper copy. For service work over $500, a signature on the invoice (on site, at the end of the job) is your proof that the work was accepted. Even if you’re sending the invoice as a PDF afterwards, keep a paper version on the truck with a signature line for big jobs.
Listing the truck inventory price instead of the retail price on parts. Mark up to retail-equivalent and charge the retail price. Don’t list your trade cost next to the customer price — it invites questions like “but you only paid $90 for this.”
Forgetting to note the access point. “Work performed under kitchen sink, cold water supply line, inlet to faucet assembly.” This specificity matters when a future plumber (or the homeowner) needs to know what you touched.
Outside the US?
- UK: VAT registration is mandatory above £90,000/year. Registered plumbers must charge 20% VAT on labor and parts, and the invoice must show both net and gross totals. If you use the CIS (Construction Industry Scheme) for commercial work, CIS deductions show separately.
- Canada: GST/HST applies above $30,000 in taxable supplies. Rates vary by province — Ontario HST is 13%, Alberta is 5% GST only.
- Australia: 10% GST if your turnover exceeds AUD $75,000. ABN on every invoice. Over AUD $1,000, the words “Tax invoice” must appear.
Open the template
The editor below loads the plumber template with service call, hourly labor, parts, and disposal line items, plus the 30-day labor warranty note and “payment due on completion” terms. Swap your business details, your licensed rates, and download the PDF.
Stuck on whether to charge late fees on commercial work? Read how to charge late fees on invoices for the legal framing.
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