What to include on a plumbing invoice
Plumbing invoices often come after an urgent repair. A clear breakdown helps customers understand the cost and reduces disputes.
- Service address and a short description of the problem
- Trip or dispatch charge, if you have one
- Labor hours, with emergency or after-hours rates on their own line
- Each fixture or part, with model numbers for water heaters and fixtures
- Your workmanship guarantee
Emergency and after-hours work
List after-hours labor as its own line rather than folding it into the regular rate. It shows the customer why the bill is higher and avoids confusion if they compare it with an earlier invoice.
Installs with model numbers
For water heaters, softeners, and fixtures, put the make and model in the “Fixture / equipment” field. It prints on the invoice and helps the homeowner with warranty registration later.
Example: emergency water heater replacement
An evening call for a leaking 50-gallon water heater, with 8.25% tax on parts.
| Description | Qty | Price | Amount |
|---|---|---|---|
| After-hours trip charge(not taxed) | 1 visit | $125.00 | $125.00 |
| 50 gal gas water heater | 1 each | $1,150.00 | $1,150.00 |
| Expansion tank, valves and fittings | 1 lot | $186.40 | $186.40 |
| Installation labor(not taxed) | 3.5 hr | $120.00 | $420.00 |
| Haul-away of old unit(not taxed) | 1 each | $60.00 | $60.00 |
| Subtotal | $1,941.40 | ||
| Tax (8.25%) | $110.25 | ||
| Total | $2,051.65 | ||
Tax rates with two or three decimals, such as 8.25% or 8.875%, are calculated exactly.
Frequently asked questions
Should I charge a trip fee on the invoice?
If you charge one, list it as its own line so it's clear. Many plumbers use the quick-add “Trip charge” item for this.
How do I show emergency rates?
Add an “After-hours / emergency labor” line with its own hourly rate, separate from regular labor.
Can a customer pay part now and the rest later?
Yes. Save the invoice and record each payment. Each one creates a receipt, and the invoice shows the remaining balance.
Can I put my license number on the invoice?
Yes. Add it to your business address block or the notes, and it will print on every invoice that uses your saved profile.