Do I charge sales tax on plumbing labor?

Depends on your state. Materials are taxable in nearly every state. Labor varies: some states tax all labor (Texas, Connecticut), some tax only specific service categories, some exempt residential repair labor (California, most New England). Your state's department of revenue publishes a taxable-services list; if you work across state lines, charge per the service-location rules, not your billing state.

When do I need to pull a permit, and how do I bill the fee?

Permits are typically required for water heater replacement, sewer line work, gas line work, rough-in plumbing on new construction, and (in many jurisdictions) anything that opens walls. Smaller repairs — fixing a leak, replacing a fixture — usually don't. When a permit is required, pull it under your license and bill it as a pass-through line on the invoice: "Permit fee — City of [city] — $XX." Customers expect the line; skipping it raises questions.

How do I handle emergency / after-hours plumbing call billing?

Either a higher hourly rate during emergency hours (often 1.5-2× standard) or a flat dispatch surcharge ($100-200) plus your standard labor rate. Either way, state the model upfront when the customer calls — most emergency callers will accept the higher rate because they're desperate; the dispute risk is when the customer is surprised by the bill. The invoice line should clearly say "Emergency dispatch" or "After-hours labor rate."

What warranty do I put on plumbing parts and labor?

Parts: typically 1 year on standard fixtures and fittings — pass through whatever the manufacturer covers. Some premium fixtures (Moen, Kohler) have longer warranties; reference them. Labor: 90 days is the plumbing industry standard for service calls. Larger installs (water heater, rough-in) often carry 1-year labor warranty. State both on the invoice — the invoice IS the warranty document customers reference six months later.

How do I invoice for emergency plumbing calls and after-hours work?

Create a separate "Emergency call-out fee" line at your after-hours rate, then list labor and parts below it. The call-out fee is non-negotiable (it covers your emergency availability); parts and labor are the variable cost. For insurance claims (burst pipes, flood damage), itemize every part by SKU and quantity — adjusters need the detail. Take photos of the failed component and include a job reference number so the customer can cross-reference the claim.

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INVOICE

Invoice #: INV-001

From:

Riverside Plumbing & Drain

Bill To:

Date: May 17, 2026

Terms: Due on Receipt

Description	Qty	Price	Total
Service call & diagnosis	1	$85.00	$85.00
Labor — Drain unclogging (1.5 hrs @ $115)	1.5	$115.00	$172.50
Parts — Drain snake bit replacement	1	$45.00	$45.00

Subtotal:$302.50

Total:$302.50

INVOICE

Invoice #: INV-001

From:

Riverside Plumbing & Drain

Bill To:

Date: May 17, 2026

Terms: Due on Receipt

Description	Qty	Price	Total
Service call & diagnosis	1	$85.00	$85.00
Labor — Drain unclogging (1.5 hrs @ $115)	1.5	$115.00	$172.50
Parts — Drain snake bit replacement	1	$45.00	$45.00

Subtotal:$302.50

Total:$302.50

Overview

A plumbing invoice bills a homeowner or property manager for service call, labor, parts, and (when applicable) emergency or after-hours surcharges. Plumbing invoices need to show the service-call fee separately, list the specific repair or installation done, itemize parts including pipe sizes and fittings, and reference any permit pulled for the work.

Step-by-step

How to invoice a plumbing service call

List the service-call fee as the first line

"Service call & diagnosis — $85." Plumbing service calls almost always carry a fixed truck-roll fee that's often (but not always) credited toward the repair. Stating it explicitly avoids the "Why was there a fee on top of the repair?" call later.

Name the labor task, hours, and your shop rate

"Labor — Drain unclogging (1.5 hrs @ $115/hr) — $173." Specific task names get paid; generic "labor" lines get disputed. If the job had multiple sub-tasks (clean drain, repair fitting, reset trap), one line per task with its own hour breakdown.

Itemize parts with sizes and fittings

"Parts — 1/2" copper, brass fittings, shut-off valve — $45." Pipe sizes and material matter for warranty and future service. Customers also reference invoices when filing insurance claims for water damage; specificity makes the claim easier.

Add emergency / after-hours surcharge as a clear line

If the call was after-hours or weekend: "Emergency dispatch (Sat night) — $150." State it; don't bury it in the hourly rate. Customers dispute hidden surcharges, accept stated ones because they knew the rate when they called.

Reference any permit pulled

For larger work (water heater install, sewer line repair, rough-in plumbing) where a permit was required: "Permit fee — City of [city] — $XX" on its own line. Skipping the permit reference makes the invoice look incomplete on review.

Set Due on Receipt for residential, Net 30 for commercial

Residential: collect on-site by card or check, mark Due on Receipt. Commercial / property management: Net 30 with a PO number. Multi-unit residential (apartment complexes) is "commercial" for billing purposes — Net 30 with PO match.

What to include

What every plumbing invoice should include

Service address (the property where the work happened, not just billing address)

License number and state — required for paid plumbing invoices in most jurisdictions

Service-call fee as a separate line

Labor lines per task, with hours × shop rate

Parts with sizes, materials, and fittings specified

Emergency / after-hours surcharge clearly labeled

Permit fee line if a permit was pulled

Sales tax on materials and (in some states) labor

Warranty terms — parts and labor — at the bottom of the invoice

Recommendations the customer declined, noted for service history

Watch out

Common plumbing invoicing mistakes

Burying the after-hours surcharge in the labor rate. Customers dispute "hidden" charges; stated charges get paid.

No license number on the invoice. In several states this makes the invoice legally non-collectable.

Vague parts lines like "miscellaneous plumbing parts." Specific lines win disputes; vague lines lose them.

Forgetting the permit fee line on work that required a permit. Customers and inspectors both expect to see it.

No service address — only the billing address. The service address is required for warranty and for property-management AP matching.

Common questions

Frequently asked questions.

Yes. The service-call fee covers your truck-roll, diagnosis, and time even when the customer declines the repair quote. State the policy when booking ("Service call is $85 whether you proceed with repairs or not, credited toward the repair if you do"). The fee makes the economics of free-diagnosis sustainable; without it, every no-go call is a money-losing trip.

Why PrimeBase

Why plumbing contractors move dispatch + invoicing into PrimeBase

A clean PDF invoice closes the service call. In PrimeBase, every property lives in the CRM with the full service history, every estimate, and every invoice on the same record. When the tech finishes a call, you raise the invoice in one click from the on-site estimate — service-call fee, emergency surcharge, parts pulled from inventory, warranty terms already there. Appointment scheduling books inspections with conflict detection, and the customer sees signed authorizations and invoices in their branded portal.

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Free plumbing invoice template. Service call to final bill.

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Invoice Details

INVOICE

From:

Bill To:

INVOICE

From:

Bill To:

How to invoice a plumbing service call

What every plumbing invoice should include

Common plumbing invoicing mistakes

Frequently asked questions.

Why plumbing contractors move dispatch + invoicing into PrimeBase

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