Invoice & estimate app for plumbers

The invoice app for plumbers

Invoice the job before you leave the driveway. Invoiceflint lets plumbers write up a plumbing invoice or estimate on their phone — call-out fee, labor, parts, and tax — send it by text, WhatsApp, or email, and get notified when the customer opens it.

Free to download for iPhone and Android · Pro free trial

Invoice

Northside Plumbing

INV-0318

Bill to: Dana Whitfield

Example plumbing invoice
Description	Qty	Rate	Amount
Service call-out fee1 × $89.00	1	$89.00	$89.00
Labor – replace water heater (hours)3 × $95.00	3	$95.00	$285.00
50-gal gas water heater1 × $1,150.00	1	$1,150.00	$1,150.00
Expansion tank and fittings1 × $86.40	1	$86.40	$86.40
Haul-away and disposal of old unit1 × $45.00	1	$45.00	$45.00

Subtotal: $1,655.40
Sales tax on parts (7%): $86.55
Total due: $1,741.95

Parts carry a 1-year manufacturer warranty; labor guaranteed for 90 days. Payment due within 7 days.

Example plumbing invoice made with Invoiceflint · Use it as a free template

What to include on a plumbing invoice

A complete invoice gets approved and paid faster. Invoiceflint fills in the numbering, dates, and totals for you — here’s what else belongs on it.

1Your business name, phone number, and license number if your state or city requires it on paperwork.
2The customer's name and the service address — it often differs from the billing address for landlords and property managers.
3Invoice number, date of service, and a specific due date.
4Your call-out or trip fee as its own line.
5Labor, either as hours × rate or as a flat price for the job.
6Parts and fixtures with quantities, so the customer can see exactly what was installed.
7Sales tax on whatever is taxable where you work.
8Warranty terms and how to pay.

How Invoiceflint helps plumbers

Built for invoicing on the job, not at a desk.

Quotes customers accept on their phone
Send a water heater or repipe estimate, let the homeowner accept it online, then turn it into the invoice with one tap when the job's done.
Works in basements and crawl spaces
No signal under the house? Invoiceflint works offline, so you can write up the job where you are and send it once you're back in range.
Sign-off and before-and-after photos
Add a signature and attach photos of the leak and the repair — useful evidence if a customer questions the bill later.
Reminders that chase payment for you
Schedule email reminders before and after the due date, so you're not phoning customers about money between jobs.

See every feature →

Billing tips for plumbers

Flat rate or time and materials — itemize parts either way

Many plumbing companies price common jobs, like a toilet rebuild or water heater swap, at a flat rate and bill unusual work as time and materials. Whichever you use, list parts on their own lines. Customers accept a bigger total more easily when the water heater is clearly separate from your labor.

Get emergency work approved before you start

For a burst pipe at 11pm, send a quick estimate with your after-hours rate and let the customer accept it on their phone before you start. It turns a likely argument about the bill into a price they've already agreed to.

Invoice before you leave the job

Homeowners pay fastest while the fixed leak is fresh in their mind. Create the invoice in the van, send it on the spot, and you'll know when they've opened it.

Invoicing questions from plumbers

What should a plumbing invoice include?

A plumbing invoice should include your business details and license number if required, the customer's name and service address, an invoice number and due date, the call-out fee, labor (hourly or flat rate), itemized parts with quantities, sales tax where it applies, warranty terms, and how to pay.

Should plumbers put the call-out fee on the invoice?

Yes. If you charge a service or call-out fee, list it as its own line so it's clear it covers travel and diagnosis. If you waive or credit it when the customer goes ahead with the repair, say so on the invoice too.

Can I send a plumbing estimate and turn it into an invoice?

Yes. In Invoiceflint you send the estimate as a link, the customer accepts it in their browser, and you convert it to an invoice with one tap. The parts, labor, and totals carry over.

Can I write an invoice where there's no phone signal?

Yes. Invoiceflint stores your invoices on your phone and works offline, so you can create the invoice in a basement or crawl space and send it when you have a connection again.

Related guides

Invoiceflint for other trades

Send your next plumbing invoice from your phone.

Download Invoiceflint for iPhone or Android and create your first invoice in under a minute.