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What should you put on the invoice?

What to bill by, and how to word the line, for 46 trades and professions. Search or jump to yours below, then carry the same units and wording from estimate to invoice.

Examples of invoice billing units for plumbers, painters, HVAC technicians, and consultants.

How to use this

Every profession below lists the units it usually bills by and a handful of real example line item descriptions for that trade. This is not a price list: rates vary by region, job and business, and nothing here invents a number. It is a reference for the wording, so the item on your quote reads the same way on the work order and the final invoice.

The one habit that matters most: pick a unit and a description for a job and keep it. A client who sees "labor hour" on the estimate and "service call" on the invoice for the same work has a reason to ask a question, even when the total is correct.

Diagram showing an invoice line moving through scope, unit, quantity, rate, and change, in the units the job was sold in.

46 professions

Plumber
Common billable units
service calllabor hourfixturevalvedrainpartlinear foot
Example line items
  • Diagnose leaking kitchen faucet
  • Replace shutoff valve
  • Install customer-supplied fixture

If the estimate lists a line by the service call, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Electrician
Common billable units
service calllabor houroutletswitchfixturecircuitbreaker
Example line items
  • Install recessed lights - kitchen
  • Replace GFCI outlet
  • Troubleshoot circuit

If the estimate lists a line by the service call, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

HVAC technician
Common billable units
diagnostic visitlabor hourequipmentpartconsumable
Example line items
  • System diagnostic
  • Replace contactor
  • Install thermostat

If the estimate lists a line by the diagnostic visit, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

General contractor
Common billable units
phaselabor houritemallowancesubcontract
Example line items
  • Demolition phase
  • Framing labor
  • Approved change order

If the estimate lists a line by the phase, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Carpenter/joiner
Common billable units
labor houritemlinear footsheetopening
Example line items
  • Build custom shelving
  • Install baseboard
  • Repair door frame

If the estimate lists a line by the labor hour, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Painter and decorator
Common billable units
roomwalldoorcabinetcoatlabor hoursquare foot
Example line items
  • Prep and paint bedroom
  • Paint 6 interior doors
  • Cabinet finishing

If the estimate lists a line by the room, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Roofer
Common billable units
squaresquare footlinear footitemlabor
Example line items
  • Tear-off existing shingles
  • Install underlayment
  • Replace flashing

If the estimate lists a line by the square, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Landscaper/gardener
Common billable units
visitlabor hourplantcubic yardsquare footlinear foot
Example line items
  • Monthly lawn service
  • Install mulch
  • Plant shrubs

If the estimate lists a line by the visit, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Handyman
Common billable units
labor houritemroomvisit
Example line items
  • Drywall patch
  • Mount shelves
  • Replace door hardware

If the estimate lists a line by the labor hour, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Locksmith
Common billable units
service calllockkeylabor houritem
Example line items
  • Residential lockout
  • Rekey deadbolt
  • Install smart lock

If the estimate lists a line by the service call, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Flooring installer
Common billable units
square footroomstairlinear footlabor hour
Example line items
  • Remove old flooring
  • Install LVP flooring
  • Install transition strip

If the estimate lists a line by the square foot, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Tiler
Common billable units
square footroomlinear footlabor hour
Example line items
  • Tile shower wall
  • Install backsplash
  • Grout and seal

If the estimate lists a line by the square foot, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Auto mechanic
Common billable units
labor hourjobpartfluid
Example line items
  • Brake pad replacement
  • Oil and filter service
  • Diagnostic scan

If the estimate lists a line by the labor hour, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Appliance repair
Common billable units
service calllabor hourpartappliance
Example line items
  • Washer diagnostic
  • Replace drain pump
  • Refrigerator repair

If the estimate lists a line by the service call, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Pest control
Common billable units
visittreatmentarealinear foot
Example line items
  • Initial inspection
  • Interior treatment
  • Perimeter treatment

If the estimate lists a line by the visit, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Cleaning service
Common billable units
visitlabor hourroomsquare foot
Example line items
  • Deep clean
  • Move-out cleaning
  • Office cleaning

If the estimate lists a line by the visit, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Moving and removals
Common billable units
labor hourcrew hourmileitemtrip
Example line items
  • 2-person moving crew
  • Truck mileage
  • Packing service

If the estimate lists a line by the labor hour, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Welder/fabricator
Common billable units
labor houritemlinear footpound
Example line items
  • Fabricate bracket
  • Repair gate
  • Weld railing

If the estimate lists a line by the labor hour, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Photographer
Common billable units
sessionhourimageeditlicense
Example line items
  • Portrait session
  • Image retouching
  • Commercial usage license

If the estimate lists a line by the session, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Videographer
Common billable units
shoot houredit hourdeliverableday
Example line items
  • Event coverage
  • Video editing
  • Final highlight film

If the estimate lists a line by the shoot hour, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Graphic designer
Common billable units
projecthourdeliverablerevision
Example line items
  • Logo concept
  • Brochure design
  • Revision round

If the estimate lists a line by the project, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Web designer/developer
Common billable units
projecthourpagemilestone
Example line items
  • Landing page design
  • Frontend development
  • Launch milestone

If the estimate lists a line by the project, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Writer/copywriter
Common billable units
wordarticlepageprojecthour
Example line items
  • Website copy
  • Blog article
  • Editing

If the estimate lists a line by the word, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Musician/DJ
Common billable units
eventhoursetday
Example line items
  • Wedding performance
  • DJ set
  • Equipment setup

If the estimate lists a line by the event, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Social media manager
Common billable units
monthpostplatformcampaignhour
Example line items
  • Monthly management
  • Content creation
  • Campaign reporting

If the estimate lists a line by the month, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Illustrator/artist
Common billable units
illustrationprojecthourrevisionlicense
Example line items
  • Custom illustration
  • Revision round
  • Commercial license

If the estimate lists a line by the illustration, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Consultant
Common billable units
hourdayworkshopmilestoneretainer
Example line items
  • Strategy session
  • On-site workshop
  • Monthly retainer

If the estimate lists a line by the hour, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Accountant/bookkeeper
Common billable units
hourmonthreturnaccountproject
Example line items
  • Monthly bookkeeping
  • Reconciliation
  • Tax preparation

If the estimate lists a line by the hour, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Lawyer/attorney
Common billable units
hourflat feematterfiling
Example line items
  • Legal consultation
  • Document review
  • Filing fee

If the estimate lists a line by the hour, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

IT services/support
Common billable units
hourdeviceticketmonthproject
Example line items
  • Remote support
  • Workstation setup
  • Managed support

If the estimate lists a line by the hour, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Marketing agency
Common billable units
monthcampaignprojecthourdeliverable
Example line items
  • Campaign management
  • Creative production
  • Monthly retainer

If the estimate lists a line by the month, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Architect
Common billable units
hourphasedrawingproject
Example line items
  • Schematic design
  • Construction drawings
  • Site visit

If the estimate lists a line by the hour, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Engineer/surveyor
Common billable units
hoursurveyreportprojectvisit
Example line items
  • Boundary survey
  • Engineering report
  • Site inspection

If the estimate lists a line by the hour, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Translator
Common billable units
wordpagehourproject
Example line items
  • Document translation
  • Proofreading
  • Certified translation

If the estimate lists a line by the word, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Real estate services
Common billable units
transactionhourserviceproject
Example line items
  • Property photography
  • Transaction coordination
  • Consulting

If the estimate lists a line by the transaction, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Tutor/teacher
Common billable units
lessonhoursessioncourse
Example line items
  • Private lesson
  • Exam prep session
  • Course package

If the estimate lists a line by the lesson, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Personal trainer
Common billable units
sessionhourpackagemonth
Example line items
  • Training session
  • Fitness assessment
  • Monthly coaching

If the estimate lists a line by the session, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Therapist/massage
Common billable units
sessionhourtreatment
Example line items
  • 60-minute session
  • 90-minute massage
  • Treatment package

If the estimate lists a line by the session, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Event planner
Common billable units
eventhourmilestoneproject
Example line items
  • Planning retainer
  • Vendor coordination
  • Event-day management

If the estimate lists a line by the event, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Caterer
Common billable units
guesttrayitemeventservice hour
Example line items
  • Dinner service
  • Appetizer tray
  • Service staff

If the estimate lists a line by the guest, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Hair and beauty
Common billable units
servicesessionhouritem
Example line items
  • Haircut
  • Color service
  • Bridal makeup

If the estimate lists a line by the service, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Pet services
Common billable units
visitwalknightgroomsession
Example line items
  • Dog walk
  • Pet sitting
  • Grooming

If the estimate lists a line by the visit, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Driving instructor
Common billable units
lessonhourpackage
Example line items
  • Driving lesson
  • Road test prep
  • Lesson package

If the estimate lists a line by the lesson, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Childcare/nanny
Common billable units
hourdaynightweek
Example line items
  • Childcare hours
  • Overnight care
  • Weekly care

If the estimate lists a line by the hour, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Freelancer (general)
Common billable units
hourprojectmilestonedeliverableday
Example line items
  • Project work
  • Milestone payment
  • Consulting hours

If the estimate lists a line by the hour, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

Other/general business
Common billable units
itemhourprojectserviceunit
Example line items
  • Professional service
  • Project fee
  • Product/service item

If the estimate lists a line by the item, keep that same word and the same line item wording on the quote, the work order and the final invoice. Renaming the unit or rewording the line between documents is what makes a client stop and ask what changed.

No profession or unit matches that search. Try a shorter word, or browse the full list above.

Why the wording matters more than it looks

An estimate, a quote and an invoice are usually read by different people at the client's end, sometimes days or weeks apart. The person approving the estimate is rarely the person paying the invoice. If the line item drifts between documents, the person paying has to reconcile two descriptions of the same work before they can approve it, and that reconciliation is exactly the kind of friction that slows an invoice down. Keeping the unit and the wording identical across the estimate, quote, work order and invoice removes that step entirely.

This also matters for a change order. If extra work is billed by the same unit already used on the original estimate, the added line reads as more of the same job rather than a new, unexplained charge.

Build the invoice from here

Pick your trade in the list above, then use the "Start an invoice" link to open the invoice generator with that trade's starting line items already loaded. You can still edit every word and rate; the trade only sets a sensible starting point instead of a blank page.

Looking for a design that fits the trade too, not just the words? Each profession's industry page links to its own gallery of invoice templates.

What this is. A reference built from how InvoiceTools' own trade presets are structured, used by a working painting contractor and HVAC technician who invoices his own jobs with them. It is not a pricing guide: rates are not included because they vary too much by region and business to state as fact.

Last reviewed by InvoiceTools, Houston, Texas, on 29 September 2026.

The wording is free to reuse. The document takes two minutes.

Every unit and example on this page came from InvoiceTools' own trade presets, so picking your trade in the invoice generator loads the same lines you just read.

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