Hours go in Qty for labor lines. Parts lines are the ones taxed when tax is set to parts only.
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A plumbing invoice is the final bill for a job. It should carry your business name, license number and contact details, the customer and service address, a unique invoice number, the issue and due dates, and every charge split into labor, parts and fees. Below the line items it shows the subtotal, any discount, sales tax where your state requires it, the total, any deposit already paid and the balance due, with payment terms and warranty notes at the bottom.
How the invoice total is calculated
The plumbing invoice generator adds your lines, takes off the discount, adds tax only on the lines that are taxable, then subtracts anything the customer has already paid.
| What it means | How it is worked out | |
|---|---|---|
| Line amount | One charge on the job: labor, a part, the service call or a permit | Qty × unit price (hours × rate for labor) |
| Subtotal | All charges before discount and tax, also shown as labor, parts and fees | Sum of every line amount |
| Discount | A fixed dollar amount off the job | Spread across all lines in proportion, so taxable lines carry their share |
| Tax | Sales tax on the taxable lines only (parts only, every line, or none) | Tax % × taxable lines × (1 minus discount ÷ subtotal) |
| Balance due | What the customer still owes | Subtotal minus discount + tax minus deposit or amount paid |
Worked example: water heater swap with a deposit, tax set to parts only at 8%
How to use this plumbing invoice template
Four tabs, one live preview. Whatever you type shows up on the invoice on the right straight away.
- Add your business details: name, address, phone or email, tax ID and your plumber license number. Upload a logo if you have one; it is read on your device and never sent anywhere.
- Enter the customer and the job: customer name, billing address, the service address if the work was at a rental or a managed property, the service date and the permit number when the job needed one.
- List labor and parts: one line per charge, each tagged as labor, parts, service call or permit. Put hours in the quantity box for labor so the customer sees time and rate.
- Set tax, discount and terms.
- Record a deposit: on bigger jobs like a water heater or a repipe, enter what was paid up front and the balance due updates by itself.
- Download the PDF: press Download PDF and choose Save as PDF. Only the invoice prints, with nothing from this page around it.
What to include in a plumbing invoice
Enough detail that the customer can see what was fixed, replaced or installed, and what each part of the bill paid for.
| Part | What goes on it |
|---|---|
| Business details | Company name, address, phone or email, tax ID, and your plumber license number where your state licenses plumbers. |
| Customer details | Customer name, billing address and contact. Add the property management company when a manager pays for a tenant's repair. |
| Invoice details | A unique invoice number, the issue date and the due date. |
| Job details | Service address, service date, the technician who did the work and the permit number if one was pulled. |
| Job description | What was done in plain words: leak repair under the kitchen sink, 40 gallon water heater replaced, main line cleared. |
| Labor | Hours and rate, or the flat rate for the job. |
| Parts and materials | Pipe, fittings, valves and fixtures, each with quantity and price, kept apart from labor because tax often treats the two differently. |
| Fees | Service call or trip charge, permit fee, disposal, and any after hours rate stated as its own line. |
| Totals | Subtotal, discount, tax, total, deposit received and balance due. |
| Payment terms | When payment is due, how the customer can pay, and your late fee policy if you have one. |
| Notes and warranties | Warranty on parts and labor, plus anything the customer should know before the next visit. |
Why are invoices important for plumbing contractors?
An invoice is the bill, the proof the work was done and the record your bookkeeper and the tax office will ask for later.
- Clear billingLabor, parts and fees on separate lines answer most of the questions a customer would otherwise call about.
- Faster paymentA due date, a total and a way to pay. Fewer questions back means the money comes in sooner.
- Records for tax timeNumbered invoices with dates and tax shown separately make bookkeeping, sales tax returns and any audit far easier to get through.
- Proof of serviceThe service address, date, technician and permit number tie the bill to the job if a warranty claim or dispute comes up months later.
- Fewer disputesItemized costs leave little to argue about.
- A professional lookA branded, consistent invoice builds trust and repeat calls. Using one template for every job also stops missed charges, like the permit fee or the second trip.
Do plumbers charge sales tax on labor and parts?
It depends on the state, and in some states on whether the job is a repair or an improvement. Here is how four large states treat it.
| State | How plumbing work is taxed |
|---|---|
| California | Construction contractors are generally the consumers of the materials they furnish and install, and on a lump sum contract the tax applies to the cost of materials to the contractor. Some contract types make the contractor the retailer of materials instead. |
| New York | Repair, maintenance or installation service to real property is taxable, so sales tax is collected from the customer. A capital improvement is not taxed to the customer when they give the contractor a Certificate of Capital Improvement. |
| Texas | Labor to repair, remodel or restore residential real property is not taxable. The total charge for remodeling, repairing or restoring nonresidential real property is taxable. |
| Washington | Prime contractors collect retail sales tax from the property owner on the gross contract price, and the invoice must state the sales tax separately. |
Every other state sets its own rules. Check with your state department of revenue, then set Tax applies to and Tax % in the generator to match.
What payment terms should a plumbing invoice use?
Small service jobs are usually invoiced and paid as soon as the work is done. Net 30, which gives the customer 30 days from the invoice date, is a popular option for larger or commercial work.
| Term | What it means | Where it fits |
|---|---|---|
| Due on receipt | Pay when the invoice arrives | Homeowner repairs and service calls finished in one visit |
| Net 15 | Pay within 15 days of the invoice date | Repeat customers and smaller property managers |
| Net 30 | Pay within 30 days of the invoice date | Commercial accounts, landlords and general contractors |
| Deposit and progress | Part up front, the rest at milestones or completion | Repipes, remodels, water heater and sewer line jobs |
If you charge a late fee, say so on the invoice before the work is billed, and keep it within your state's limits.
Plumbing invoice vs estimate vs receipt
Three documents, three moments in the job: before the work, after the work, and after the money arrives.
| Document | When it is sent | What it does |
|---|---|---|
| Estimate | Before work starts | Sets out the expected cost so the customer can approve the job. |
| Invoice | When the job or a milestone is done | The final bill for the work and materials provided, with a due date. |
| Progress invoice | At each stage of a large job | Bills a deposit, a stage or the final payment on its own. |
| Receipt | After payment | Confirms the customer has paid. |
Industry specific tips for plumbing invoicing
Plumbing runs from a 30 minute clog to a month long remodel. These habits keep the invoice clear at both ends.
- Separate labor from materialsShow time worked and parts replaced on their own lines. In several states the two are taxed differently, so this also keeps the tax right.
- Name after hours chargesState the emergency or weekend rate as its own line.
- Write down warrantiesNote what the parts and the labor are covered for and for how long. It cuts follow up calls.
- Bill big jobs in stagesDeposit, progress and completion invoices for repipes and remodels.
- Carry the permit numberWhen a job needed a permit, put the number and the fee on the invoice so the customer and the inspector can match them.
- Invoice the same daySend it when the job wraps.
Running a plumbing business? The best invoice is for a job you nearly missed.
Every invoice on this page started as a ring at the shop, and a burst pipe at 11pm calls the next plumber on the list if nobody picks up. ServiceAgent answers your plumbing calls around the clock, asks what is leaking and where, then puts the visit straight on your schedule, so the work you bill actually reaches you.
Book a free demoFrequently asked questions
Short answers on plumbing invoices, billing and this generator.
Book a free demoWhat should a plumbing invoice include for clients?
Your business and license details, the customer and service address, an invoice number, issue and due dates, a description of the work, labor hours and rate, parts and materials, the subtotal, discount, tax, total due and payment terms.
When is the best time to send a plumbing invoice?
Right after the job is finished. On large projects, send one at each milestone instead of waiting for the end.
What's the difference between a plumbing estimate and a plumbing invoice?
An estimate sets out the expected cost before the work begins. The invoice is the final bill once the services and materials have been provided.
What is the difference between a plumbing invoice and a receipt?
An invoice asks the customer to pay. A receipt confirms that payment has already been made.
How do I format a plumbing invoice correctly?
Business details and the invoice number at the top, customer and job details below, then line items split into labor, parts and fees. Totals sit at the bottom right with the balance due made obvious, and payment terms and warranty notes go underneath. The generator above lays it out that way for you.
Should plumbers use an invoice template or generator?
A blank template works if you like filling things in by hand. A generator does the math, keeps the layout the same on every job and gives you a PDF straight away, which saves time and avoids adding mistakes.
How does a plumbing invoice generator work step by step?
You enter your business and customer details, add labor, parts and fees as lines, set the tax, discount and any deposit, and the plumbing invoice generator works out the totals and the balance due. Then you download the invoice as a PDF.
Why are plumbing invoices important for contractors and clients?
They prove the work was done, explain each charge, support your tax records and make the business look professional. For the customer, they are the record for warranty claims and insurance.
Do plumbers charge sales tax on labor?
It depends on the state. Texas does not tax labor on residential repair, New York taxes repair and maintenance work, and Washington taxes the whole contract price. Check your state's rules and set the tax option in the generator to match.
Is my invoice data saved or uploaded?
Your draft is saved in your own browser so it is there when you come back. Nothing is uploaded, and your logo is read on your device only. Press Reset to clear it.
Leads growth and product marketing for ServiceAgent at SaaS Labs, where he has worked in product marketing since 2020. Writes ServiceAgent's coverage of AI call answering, CRM and home services operations.
Massachusetts Master Plumber with 22 years in residential service plumbing. Owner of Sullivan Plumbing Co. since 2011, reviews ServiceAgent plumbing content.
Published by ServiceAgent, the AI front office for home service teams. This template is a general billing tool, not tax or legal advice. Sales tax rules differ by state and by type of job, so confirm yours with your state revenue department or an accountant.