Plumbing Invoice Template: Free Guide for Plumbers (2026)
Free plumbing invoice template guide for plumbers: service call fees, flat-rate vs hourly pricing, parts, permits and emergency rates, plus a worked example.
Quick answer: A plumbing invoice template is a billing layout for plumbers that records the service call fee, a description of the problem and fix, labor time or flat-rate task prices, parts used, permit fees, any emergency surcharge, tax where it applies and the total due. Most residential plumbing invoices are issued and paid on the day of the job, so the template should be quick to complete on site.
This guide explains what to include on a plumbing invoice, how plumbers price service calls and installations, how to handle parts, permits and after-hours work, and walks through a water heater replacement invoice with correct totals. You can create and send one from your phone using our free invoice generator before you leave the driveway.
What to include on a plumbing invoice template
- Business details: company name, logo, phone, email and your plumbing license number where your state or city requires it on paperwork.
- Customer and site: customer name, billing address and the service address if different (common for landlords).
- Invoice number and date: plus the job or work order number.
- Problem and diagnosis: a short description, for example "Water heater leaking from tank base; tank failure confirmed."
- Work performed: what you did, in plain language.
- Labor: hours and rate, or flat-rate task prices.
- Parts: each significant part with quantity and price, and small consumables grouped.
- Fees: service call, permit, disposal and any emergency surcharge.
- Tax, total and payment: tax where it applies, total due, payment methods and terms.
- Warranty: your workmanship warranty and a note on manufacturer warranties.
How plumbers price their work
| Pricing method | How it works | Typical use |
|---|---|---|
| Service call fee | Fixed fee to attend and diagnose | Every visit; sometimes credited against the repair |
| Hourly labor | Rate per hour, often with a minimum and then billed in increments | Diagnostics, leaks behind walls, older homes with unknowns |
| Flat-rate pricing | Fixed price per task from a price book | Faucet replacement, toilet rebuild, drain clearing |
| Installation quote | Fixed price for equipment plus install | Water heaters, repiping, fixture packages |
| Emergency or after-hours rate | Higher rate or surcharge outside normal hours | Nights, weekends, holidays, burst pipes |
Flat-rate pricing tends to reduce arguments because the customer agrees the price before you start. Hourly billing is fairer when you cannot see the problem yet. Whichever you use, your plumbing invoice should match what you told the customer. Our guide on invoice vs estimate explains how to move from a quoted price to the final bill.
Parts, materials and markup
Parts are usually the largest variable on a plumbing invoice. List major parts individually (a water heater, a pressure-reducing valve, a toilet) and group fittings, solder, tape and sealant into one consumables line. Most plumbing businesses price parts above their supply-house cost to cover sourcing, stocking, returns and warranty handling. That is normal; just be consistent and make sure it matches what you quoted.
If a customer supplies their own fixture or part, note "Customer-supplied part: labor only" on the invoice. It makes clear that your workmanship warranty covers the installation but not the product itself, which avoids an awkward call if a cheap faucet cartridge fails a few months later.
Sales tax on parts and labor varies a lot by state, and rules for repair work can differ from new construction. Show tax as its own line on the right base, and use our sales tax calculator to check the figure. Our guide to sales tax on invoices in the US explains the general principles.
Permits, inspections and emergency calls
Water heater replacements, gas line work, repiping and sewer line repairs often need a permit. List the permit fee as a separate line so the customer sees it is a pass-through cost, and note the permit number in the description where practical. If an inspection visit is needed, say whether it is included or billed separately.
For emergency calls, state the after-hours rate or surcharge before you dispatch, then show it clearly: "After-hours labor, Sat 18 Oct 2026, 1.5 hrs at $187.50 (1.5× standard rate)". Customers in an emergency remember what they were told on the phone, and an invoice that matches it gets paid without complaint.
Worked example: water heater replacement invoice
This sample plumbing invoice replaces a failed 50-gallon gas water heater. The 8% tax on parts is an example rate only; your state may tax a different base or rate.
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Service call and diagnosis | 1 | $89.00 | $89.00 |
| 50-gal gas water heater, 6-yr manufacturer warranty | 1 | $1,150.00 | $1,150.00 |
| Install kit: flex connectors, gas valve, expansion tank | 1 | $185.00 | $185.00 |
| Labor: licensed plumber, remove and install | 3.5 hrs | $125.00 | $437.50 |
| Old unit removal and disposal | 1 | $75.00 | $75.00 |
| Plumbing permit fee | 1 | $120.00 | $120.00 |
| Subtotal | $2,056.50 | ||
| Sales tax 8% on parts ($1,335.00) | $106.80 | ||
| Total due on completion | $2,163.30 | ||
Check the maths: 3.5 × $125 = $437.50; the lines add up to $2,056.50; tax is 8% of $1,150 + $185 = $1,335, which is $106.80; the total is $2,163.30. Add a note such as "1-year workmanship warranty; manufacturer warranty registered to customer" to finish the invoice.
How to fill in a plumbing invoice on the job
- Open the generator on your phone and choose a clear layout: the Blue invoice template is easy to read on small screens.
- Your business details are saved in your browser from last time; check them.
- Add the customer and service address, and set the invoice number using your invoice numbering system.
- Describe the problem and the fix in one or two sentences.
- Add the service call, labor, parts, permit and disposal lines.
- Apply tax to the correct base and add your warranty note.
- Download the PDF, email or text it to the customer, and take payment before you leave.
Our guide on how to make an invoice on your phone has more tips for invoicing from the van.
Writing job descriptions customers trust
The description on a plumbing invoice does more work than most plumbers realize. A homeowner who was not at home during the repair, a landlord reviewing a tenant's call-out, or an insurer looking at water damage will all judge the invoice by how clearly it explains what happened. A strong description has three parts:
- What you found: "Pinhole leak in 3/4 in copper supply line above basement ceiling, approx. 2 ft from water heater."
- What you did: "Cut out damaged section, replaced with 18 in of new copper and two couplings, pressure tested."
- What you recommend: "Remaining copper shows corrosion; recommend repiping quote."
That last point matters. Recording your recommendation on the invoice protects you if the same pipe fails next month and shows the customer you are looking out for them, which is how a one-off service call turns into a larger job. If the customer declines recommended work, note that too, for example "Customer declined replacement of corroded shut-off valve at this time."
For property managers and landlords, also note the tenant's name or unit number and the time on site. Many management companies cross-check contractor invoices against tenant requests, and missing details are the main reason these invoices sit unpaid.
Getting paid for plumbing work
- Collect on completion for homeowners. Card, payment link or check on the day is standard for residential service work.
- Use net terms for commercial and property management accounts only once they are approved, and quote their work order number on every invoice.
- Take a deposit on big installs. For repiping or a tankless upgrade, a deposit covers equipment you order in advance.
- Chase promptly. If an invoice is unpaid, a polite reminder the day after the due date works better than waiting weeks. See how to get paid faster.
Plumbers who also work on heating systems can compare billing practices in our HVAC invoice template guide, and those working as subcontractors on renovations should read the contractor invoice template guide.
Create your plumbing invoice now
Open the free invoice generator, choose the Blue template or browse all invoice templates, add your service call, labor and parts, and download a professional plumbing invoice in minutes.
Frequently asked questions
What should be on a plumbing invoice?
Your business name, plumbing license number where required, contact details, the customer's name and service address, a unique invoice number and date, a description of the problem and work done, itemized labor, parts and fees, tax where it applies, the total, payment terms and any warranty.
Do plumbers charge a service call fee?
Many plumbers charge a service call or trip fee to cover travel and diagnosis. Some waive or credit it if the customer goes ahead with the repair. Whatever your policy, tell the customer before the visit and show the fee on its own line.
Is flat-rate or hourly pricing better for plumbing?
Flat-rate pricing gives customers a fixed price per task before work starts and is popular for common repairs, while hourly pricing suits diagnostic work and jobs with unknowns. Many plumbers use flat rates for standard jobs and hourly billing for everything else.
Do I charge sales tax on plumbing parts?
In many US states, parts and materials are taxable while labor on repairs may be treated differently, but the rules vary widely and can differ between repairs and new construction. Check your state's guidance or ask an accountant.
Should I include a warranty on a plumbing invoice?
It is good practice to state your workmanship warranty and note that manufacturer warranties apply to parts. Include the warranty period and any conditions, so the customer has it in writing on the same document as the work performed.
How much should a plumber charge per hour?
Rates vary widely by region, license level and whether the call is routine or an emergency, so there is no reliable national figure. To set yours, add up wages, vehicle, insurance, tools, licensing and overhead, divide by the hours you can realistically bill in a year, and add your profit margin. Compare with local competitors and set a higher rate for nights, weekends and holidays.
Can a plumber charge for a call-out if nothing was fixed?
Yes, if the customer agreed to a service call or diagnostic fee before the visit. That fee pays for travel and the time spent diagnosing the problem, even if the customer decides not to go ahead or the job needs a specialist. Explain the fee when booking, show it as its own invoice line and describe what you found, so the customer sees what they paid for.
Should a plumbing invoice include photos?
It is not required, but photos are very useful. A picture of the failed part, the leak or the finished installation helps homeowners who were not present, landlords approving tenant call-outs and insurers handling water damage claims. Attach them to the email with the PDF invoice or note that photos are available, and keep copies in the job file in case the work is questioned later.
What should I write on a plumbing invoice for an insurance claim?
Give a clear, factual account: the date of the call, the cause you found, such as a burst supply line, its location, the work done and the parts used. Keep emergency work to stop the damage separate from permanent repairs, because insurers often assess them differently. Avoid comments about coverage. The homeowner deals with the insurer, but a precise invoice and photos make their claim easier.
Should I bill the tenant or the landlord for a plumbing repair?
Bill whoever booked the job and agreed to pay for it. For rental properties that is usually the landlord or property manager, even if the tenant let you in, unless the tenant arranged and agreed to pay for the work. Confirm the bill-to party before you start, put the service address and unit number on the invoice, and quote the work order number if the manager issued one.
Invoice Creator Editorial Team
Guides on invoicing, cash flow and small-business finance from Invoice Creator, operated by Next Software Development Company. Content is reviewed for accuracy against the fields our own invoice generator produces.
Try the invoice generator