Free Plumbing Invoice Template

Covers the permit, fixture, and water-heater detail a plumbing invoice needs to survive an inspection or a homeowner query. Print it, fill it in by hand, or save it as a PDF — no sign-up required.

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The Plumbing Invoice Template

A blank, print-ready form with the plumbing job fields already laid out. Use your browser's print dialog and choose "Save as PDF" to keep a digital copy.

Filling this in for the same customers every month? Create a free account and your client details, business info, and plumbing job fields save automatically for next time.

What to Include on a Plumbing Invoice

Every invoice needs the same commercial basics. What separates a plumbing invoice is the job detail that proves what was done — the part generic templates leave out.

Standard invoice details

  • Your business name, address, phone, and email
  • The client's name, billing address, and contact
  • A unique invoice number and the invoice date
  • Payment due date and payment terms
  • Itemized description, quantity, unit, and rate per line
  • Subtotal, tax, any discount or deposit, and the balance due

Plumbing-specific detail

  • Permit Number
  • Fixture Type
  • Water Heater Serial
  • Inspection Date
  • Shutoff Location

In ServiceInvoicing these become a reusable schema, so they appear on every new invoice automatically.

Plumbing Pricing and Billing Practices

Pricing and line items

Most plumbing work is billed either flat-rate — a set price per task such as a drain clear, faucet swap, or water-heater install, quoted from a price book — or time-and-materials, meaning hourly labor plus parts. Flat-rate is common on residential service calls because homeowners want a firm number before work starts; time-and-materials suits remodels, new construction, and diagnostic work where the scope is unknown. Many shops charge a trip or diagnostic fee that is credited if the customer approves the repair. Emergency, after-hours, and weekend calls usually carry a higher rate or a flat surcharge — show it as its own line so it isn't mistaken for padding.

Deposits and payment terms

Residential service calls are typically paid on completion, before the truck leaves. Larger jobs such as repipes or water-heater replacements often take a deposit to cover equipment, with the balance due on completion or after inspection. Property managers and commercial clients usually expect net 15 or net 30 and may need a PO number on the invoice before accounts payable will release payment.

Common Plumbing Invoice Disputes — and How to Prevent Them

“Why was I charged for two hours?”

Record labor hours per task, and show travel or a minimum charge on its own line. A homeowner who watched you work for 90 minutes will question an unexplained two-hour line.

Parts markup

Customers sometimes price the same water heater online. List make, model, and capacity, and put the expansion tank, fittings, and haul-away on separate lines so the total clearly covers more than the box price.

Permits and failed inspections

Show the permit number and inspection date, and state who pays if a re-inspection is needed. Leaving it vague turns a small re-inspection fee into an argument.

Plumbing Invoice Example

Here is the same template filled in for a typical plumbing job, so you can see how the line items and job fields work together.

Hartwell Plumbing Co.
billing@hartwellplumbing.com
(615) 555-0184
INVOICE
Example
Bill To
Ridgeline Properties
Mark Ridgeline
4201 Commerce Blvd, Nashville, TN
DescriptionQtyUnitRateTotal
Water Heater Replacement — Labor4hr$125.00$500.00
50 Gallon Gas Water Heater1ea$780.00$780.00
Expansion Tank & Fittings1ea$145.00$145.00
Permit & Inspection Fee1ea$95.00$95.00
Subtotal$1520.00
Tax (8.25%)$125.40
Total$1645.40
Job Details
Permit Number
PLM-2024-4471
Fixture Type
Rheem 50 gal Gas
Water Heater Serial
RH8842190X
Inspection Date
Dec 12, 2024
Shutoff Location
Garage — North Wall
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Stop Rewriting the Same Details on Every Plumbing Invoice

A printed template is fine for a one-off. For repeat customers, a free account saves your business details, client addresses, and plumbing job fields once — and tracks who has paid.

With a free account

  • Your business details, logo, and default tax rate save once
  • Clients save to an address book — pick them from a list next time
  • Every invoice is stored and downloadable as a PDF whenever you need it
  • Subtotal, tax, discounts, and deposits calculate as you type
  • Mark invoices Draft, Pending, Paid, or Overdue and filter by client or status to see what you are owed
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Plumbing Invoice Template FAQ

What should a plumbing invoice include?

Beyond the standard details — your business information, the client's details, a unique invoice number, dates, itemized lines, and the balance due — a plumbing invoice should carry the job detail your customers and any inspector or adjuster expect: permit number, fixture type, water heater serial, inspection date, shutoff location. Recording those on the invoice itself keeps the paperwork with the job.

Should I list the water heater serial number on the invoice?

Yes. Manufacturers usually need proof of the installation date for warranty claims, and the invoice is often the only document a homeowner keeps. Recording the serial number and install date also lets you look the unit up instantly if the customer calls back under warranty.

How do I invoice a service call where the customer declined the repair?

Bill the diagnostic or trip fee on its own line and put the recommended repair and its price in the notes. That documents what you found, protects you if the problem gets worse, and gives the customer a reference when they are ready to book.

Should I charge tax on a plumbing invoice?

Many states tax plumbing materials but not installation labor; others tax the whole job, or treat repairs differently from new construction. Separating parts from labor on the invoice, as this template does, makes whichever rule applies to you easy to follow — confirm the details with your state's revenue department.

Is this plumbing invoice template really free?

Yes. Print the blank template or save it as a PDF from your browser with no sign-up. If you would rather stop filling forms in by hand, ServiceInvoicing's free plan covers 2 active clients and unlimited invoices with no credit card required.

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