Invoice Templates

Plumbing Invoice Template

A plumbing invoice shows the service call, the work done, each part or fixture, labor by flat rate or by the hour, and any permit and disposal fees, so the customer can match it to what they approved. The template below starts with a water heater replacement; change the lines to your job and download the invoice as a PDF or Word file to email or print on site.

From and bill to

Logo (optional)

Stays in your browser. PNG, JPG, SVG or WebP under 1 MB.

Name on the first line, then address, email, phone.

Details

Line items

$89.00

$1,150.00

$118.50

$500.00

$85.00

$50.00

Discount, tax and payments

Applied to taxable lines after the discount.

Added after tax.

Notes and terms

Total

$1,903.50

Subtotal $1,992.50

From

Copperline Plumbing & Drain
5120 East Colfax Avenue
Denver, CO 80220

(303) 555-0159

License MP-000000 (example)

Invoice

Invoice # INV-7720
PO / reference #: Work order 31877, water heater replacement

Bill to

Tom and Elena Brooks
2245 South Clayton Street
Denver, CO 80210

Ship to / job site

2245 South Clayton Street, Denver, CO 80210

DescriptionQtyUnit priceAmount
Service call and diagnosis1$89.00$89.00
50-gallon gas water heater, 6-year tank warranty1$1,150.00$1,150.00
Thermal expansion tank, gas flex line, fittings1$118.50$118.50
Labor: remove old heater, install, connect gas, water and venting (hours)4$125.00$500.00
City permit and inspection fee (at cost)1$85.00$85.00
Haul-away and disposal of old water heater1$50.00$50.00
Subtotal$1,992.50
Discount−$89.00
Total$1,903.50
Balance due$1,903.50

Notes

Service call credited because the replacement was approved. Inspection scheduled by the city; we will meet the inspector on site.

Payment instructions

Payment due on completion by card, check or ACH. Labor warranted for 1 year; the tank carries the manufacturer's 6-year warranty.

PDF opens your browser's print dialog: choose "Save as PDF". The Word file opens in Word, Pages and Google Docs.

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Flat-rate pricing vs time and materials

Plumbing companies bill in two main ways. Flat-rate pricing uses a price book: each task (replace a toilet wax ring, clear a main line, install a garbage disposal) has a set price that covers labor, standard parts and overhead, and the customer approves it before work starts. Time and materials bills the actual hours at an hourly rate plus parts, which suits troubleshooting and remodel work. Many shops use flat rate for service calls and time and materials for larger projects.

Most add a service call or trip fee to cover driving to the job and diagnosing the problem, often credited toward the repair if the customer goes ahead. After-hours, weekend and emergency calls usually carry a higher rate or a surcharge; state it when the customer approves the work and show it as a separate line on the invoice so it does not look like an error.

Line items for a plumbing invoice

Itemize the job so the customer can see parts, labor and pass-through charges separately:

  • Service call or diagnostic fee, and the credit if you waive it.
  • Each fixture or major part (water heater, valve, disposal) with model and quantity.
  • Fittings and small materials, grouped into one line.
  • Labor: the flat-rate task, or the hours and rate.
  • Permit and inspection fees, passed through at cost with the permit number.
  • Haul-away and disposal of the old fixture.
  • Warranty: the manufacturer's parts warranty and your labor warranty period.

Licensing, permits and sales tax

Plumbing is a licensed trade in most states, with licenses issued by the state and sometimes by cities or counties. Many plumbers print their license number on estimates, contracts and invoices, and some jurisdictions require it on contracts and advertising, so check with your licensing board. Water heater replacements, repiping and new fixtures commonly need a permit and an inspection; bill the permit fee as a pass-through so the customer can see it is a government charge.

Sales tax on plumbing depends on whether the state treats the job as work on real property. In many states the plumber is the consumer of the materials installed in the building, pays tax when buying them, and charges no tax to the customer. Other states tax separately stated materials or certain repair services. Texas, for example, charges no tax on labor to repair a home but does tax repair and remodeling of nonresidential property. Check your state's rules and set the taxable flag on each line.

Worked Example

The example replaces a 50-gallon gas water heater. The heater ($1,150.00), an expansion tank and fittings ($118.50), 4 hours of installation at $125 ($500.00), the permit at cost ($85.00), haul-away ($50.00) and the $89.00 service call bring the subtotal to $1,992.50. Because the customer approved the replacement, the service call is credited back through an $89.00 discount.

LineCalculationAmount
Service call and diagnosis1 × $89.00$89.00
50-gallon gas water heater, 6-year tank warranty1 × $1,150.00$1,150.00
Thermal expansion tank, gas flex line, fittings1 × $118.50$118.50
Labor: remove old heater, install, connect gas, water and venting (hours)4 × $125.00$500.00
City permit and inspection fee (at cost)1 × $85.00$85.00
Haul-away and disposal of old water heater1 × $50.00$50.00
SubtotalSum of rounded lines$1,992.50
DiscountFlat amount−$89.00
Total$1,903.50

No sales tax line appears, because the example assumes a state where the plumber pays tax on the materials when buying them. The total and the balance due on receipt are $1,903.50.

Frequently Asked Questions

Official References

This template does the arithmetic and the layout. Sales tax, licensing and invoicing rules vary by state and trade; confirm what applies to your business with your state's department of revenue, your licensing board or a tax professional. Federal figures verified October 2026.

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