Invoice Template for Plumbers: Free Plumbing Invoice Template and Billing Guide
Free plumbing invoice template with realistic line items, plus how to handle sales tax, license numbers, late fees, and collect payment on the job.
Use this guide to send a complete plumbing invoice before you leave the job — the kind that gets paid the same week and holds up if a homeowner pushes back later.
Who is this plumbing invoice guide for?
This is written for solo plumbers and 1–3 person shops billing homeowners, property managers, and light commercial customers. If you're running five trucks on ServiceTitan with a dedicated dispatcher, skip it. Your software already handles this.
What's in here:
- A copy-ready plumbing invoice template you can paste into Word, Google Docs, or Excel
- Realistic line items: service-call fee, labor, parts, disposal, after-hours surcharge
- Plain-English notes on sales tax, license-number requirements, and late fees
- On-site tactics for collecting payment the same day, including how a business checking account fits in
What should a plumbing invoice include?
A complete plumbing invoice should list the business name, license number, invoice number and date, customer and service address, job date and scope, itemized labor, parts and materials, sales tax, payment terms, and due date.
- Your business name, address, phone, and email.
- Your plumbing license number. California, for example, requires licensed contractors to display the license number on specified business materials, including contracts and advertising.
Plumbers in other states should check their own licensing board's rules.
- Invoice number and date. Sequential. Don't reset every January.
- Customer name, billing address, and service address, which can differ for landlord and rental jobs.
- Job date and a one-line scope ("Replaced 50-gal gas water heater, Rheem XE50T06ST45U1, garage").
- Itemized labor with hours, hourly rate, and any service-call or trip fee broken out as its own line.
- Parts and materials listed separately, each with quantity and unit price. List the part number or model when it helps the customer understand what you installed.
- Sales tax line. Taxability of labor versus parts varies by state. More on this below.
- Payment terms, due date, accepted payment methods, and your written late-fee policy.
Where can I find a free plumbing invoice template?
Paste this template into a doc and replace the bracketed fields. It's deliberately plain so it works in any tool, at no cost.
INVOICE
[Your Business Name]
[Street Address, City, State ZIP]
[Phone] | [Email]
State Plumbing License #: [Your License Number]
Invoice #: [0001] Invoice Date: [MM/DD/YYYY]
Due Date: [MM/DD/YYYY, e.g., Net 7]
BILL TO SERVICE ADDRESS
[Customer Name] [If different]
[Address] [Address]
[Phone / Email]
SCOPE OF WORK
[One or two lines describing what you did, where, and with what equipment]
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DESCRIPTION QTY RATE AMOUNT
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Service call / trip fee 1 $89.00 $89.00
Labor: diagnosis and repair (hrs) 2.5 $135.00 $337.50
After-hours surcharge (10pm–6am) 1 $75.00 $75.00
50-gal gas water heater (Rheem) 1 $649.00 $649.00
Expansion tank (Watts DET-5) 1 $58.00 $58.00
3/4" flex connectors 2 $14.00 $28.00
Sediment trap and fittings 1 $22.00 $22.00
Permit (city of [____]) 1 $45.00 $45.00
Haul-away / disposal fee 1 $40.00 $40.00
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Subtotal: $1,343.50
Sales tax (parts): $69.05
TOTAL DUE: $1,412.55
-------------------------------------------------------------------
PAYMENT
Pay by card or ACH: [link]
Check payable to: [Your Business Name]
Terms: Due on receipt. If a late fee applies, it is disclosed
in writing on this invoice or in the service agreement and
complies with state law.
Warranty: Labor 1 year; parts per manufacturer.
Thank you, [Your Name], [License #]Make it your own. Paste the block into Word, Google Docs, or Excel. Update the quantities, rates, and your state's sales-tax percentage before sending it to a customer. In Excel or Google Sheets, set the AMOUNT column to =QTY*RATE, the Subtotal to a sum of the AMOUNT column, and the sales-tax line to =Subtotal*[your rate] so the math updates as you change quantities.
Filled-in example: 50-gallon water heater replacement
The template above already shows a realistic water-heater job for about $1,413. Swap in your actual rates and parts and you have an invoice you can send from the driveway.
How do plumbers send invoices and reduce payment delays?
The single biggest payment-speed lever is when the invoice goes out, not how it's designed.
Five habits that move invoices from sent to paid quickly:
- Send before you leave the property. Email or text a link while the homeowner is still standing there. Memory of the repair and the price they agreed to is freshest in the first ten minutes.
- Offer card, ACH, and tap-to-pay at the door. A tap-to-pay reader and a payment link give most customers a quick way to pay by card or ACH bank transfer. Checks are fine; "I'll mail you something next week" is not.
- Use concrete due dates. "Due on receipt," "Net 7," or "Net 15." Never "soon" or "whenever you can."
- Put the late fee in writing on the invoice itself. If you charge a late fee, state the rate in writing before payment is due and confirm that the rate complies with your state's rules.
- Follow up on a schedule. Short, dated reminders at day 3, day 7, and day 14, on the same email thread with the invoice attached.
How should plumbers handle estimates, deposits, and change orders?
For anything bigger than a basic service call, a written estimate protects both sides.
When to write an estimate instead of quoting verbally:
- Parts-heavy jobs (water heaters, repipes, fixture replacements)
- Jobs requiring a permit
- Anything over your dispatch minimum where the customer has time to comparison-shop
Deposits. For larger jobs like repipes, water heaters, and multi-fixture installs, consider collecting a written deposit on materials before you order parts. Some states cap how much a licensed contractor can collect up front, so check your state board's rules before you set a default percentage.
Change orders. If you open a wall and find galvanized that wasn't in the estimate, document the change before you do extra work. A text message ("Need to replace 6 ft of galv, $240 in parts + 1 hr labor, ok?") with a clear "yes" back can help document customer approval. Save the screenshot and attach it to the invoice. It gives you a dated record of the customer's approval if a payment dispute comes up later.
Convert the approved estimate into the invoice instead of rekeying lines. If your invoicing tool supports estimates, turning an accepted estimate into the final invoice keeps part numbers, quantities, and the customer's approval linked to the bill you collect on.
How do sales tax, licensing, and recordkeeping work for plumbing invoices?
These basics help you set up invoices that are easier to reconcile and easier to support at tax time. For a fuller list of write-offs, see our guide to plumbers' business expenses and tax deductions.
Sales tax on plumbing labor vs. parts
Taxability rules are set by each state's department of revenue, and they treat plumbing labor and parts differently:
- Texas: Labor to repair or remodel nonresidential real property is taxable, while labor to repair or remodel residential real property is generally not taxable; the contractor still owes tax on materials.
- New York: Charges for repair, maintenance, or installation services to real property are generally subject to sales tax, including the labor portion, unless the work qualifies as a capital improvement.
- California: Charges for labor to repair or install property are generally not taxable, but the parts a contractor furnishes are taxable as a retail sale.
Three states, three different invoice math problems. Confirm the rule with your state's department of revenue or your tax preparer before you set your defaults.
License number on every invoice
California requires licensed contractors to display their license number on specified business materials, and plumbers in other states should check their own licensing board's rules.
Adding the number to your invoice footer once is a low-effort way to stay covered.
How long to keep invoices
The IRS recommends keeping business records that support income or deductions for at least three years from the date the return was filed, with longer periods required in specific situations.
For permitted or warranty-covered plumbing jobs, consider keeping the invoice with the job file for the full warranty or permit-related period.
Run every payment through a dedicated business account
A separate business checking account gives each invoice payment a clear deposit trail. Every deposit ties back to a specific invoice number, and at tax time the reconciliation is mechanical instead of forensic. Reconcile weekly, not at year-end, and you'll spot a missing $89 service call before the memory of the job is gone.
Should plumbers use standalone invoicing or field-service software?
There are two real options for a plumbing shop under five trucks:
| Need | Field-service platform (Jobber, Housecall Pro) | Business checking with built-in invoicing (Novo) | |---|---|---| | Dispatch and scheduling | Yes | No | | CRM / customer history | Yes | Basic (transactions, invoices) | | Invoicing | Yes | Yes | | Card and ACH payment | Yes (via integration) | Yes | | QuickBooks/Xero sync | Yes | Yes | | Monthly fee | Paid subscription, billed monthly or annually (check current pricing) | No monthly fee | | Holds your operating funds | No (separate business checking required) | Holds your operating funds in the connected Novo business checking account |
How to decide: if scheduling is still simple enough to manage on a calendar, built-in invoicing on a business checking account is usually enough. If dispatch coordination is the daily bottleneck and you're juggling multiple techs, the scheduling features of a field-service app start to pay for the subscription.
How does Novo help plumbers invoice and get paid?
Novo is a fintech that offers business checking built for small businesses, with invoicing built in. Banking services are provided by Middlesex Federal Savings, F.A., Member FDIC. For a solo plumber or 1–3 person shop, it covers the billing and deposits side of the business without a monthly software subscription.
What you get:
- No monthly fee, no minimum balance, and no-fee incoming wires on Novo business checking.
- Send invoices from the Novo app or web dashboard. Customers pay by card or ACH bank transfer through a link, and payments are deposited into your connected Novo business checking account.
- Estimates and reminders in the invoicing tool, so you can quote a water heater, send reminders, and convert the estimate into the final invoice without retyping line items.
- Accounting syncs. Novo connects to QuickBooks and Xero so paid invoices flow into your books, and Stripe integrates for card payments.
- One tradeoff to know up front: Novo does not accept cash deposits. If a customer hands you $400 in cash for an unclog, common workarounds are to buy a money order at USPS, Walmart, or a grocery service desk and deposit it, or to load cash onto a prepaid card and transfer it into Novo by ACH. Plumbers who get paid mostly by card, ACH, or check don't run into this. Cash-heavy shops should weigh it carefully.
Best fit: solo plumbers and small shops who already bill most jobs by card, ACH, or check, and want one place for invoicing, payments, and the operating account.
What questions do plumbers ask about invoices?
Do I have to charge sales tax on plumbing labor?
It depends on your state and whether the work is new construction or repair. For example, Texas, New York, and California apply different rules to plumbing labor and parts, so plumbers should confirm the rule with their state department of revenue or a tax preparer before setting an invoice default.
How should I price a plumber service call fee?
Set a service-call fee that covers drive time to and from the job, your first 30–60 minutes on-site, and the opportunity cost of reserving one of the day's job slots. Many independent plumbers either credit the service-call fee toward the first hour of labor or charge it as a standalone dispatch minimum. Publish it on your website and confirm it on the phone before you roll the truck.
Can I charge a late fee on a plumbing invoice, and how much?
Yes, if it's disclosed in writing on the invoice or in your service agreement before the work is done. The rate must comply with your state's usury and disclosure rules. Check yours before setting a rate.
Do I need to put my license number on every invoice?
If your state licenses plumbers, check the licensing board's rules. California, for example, requires licensed contractors to display the license number on specified business materials. Adding it to your invoice footer once is a low-effort way to stay compliant.
How do plumbers accept credit card payments on-site?
Three common setups: a tap-to-pay reader paired with your phone, a payment link on the invoice that the customer opens on their own phone, or keyed entry through a payment processor's mobile app. Card processing fees vary by processor and transaction type, so confirm your actual rate before building it into your prices, or offer a small cash or check discount.
What bank account should a plumber use?
A business checking account in your business's legal name, separate from your personal account, with low or no monthly fees and built-in invoicing or a clean accounting sync. Novo fits that profile for plumbers who get paid mostly by card, ACH, or check. Cash-heavy shops should also keep a relationship with a local bank or credit union that takes cash deposits.