How to Job Cost for Service and Trade Businesses

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Quick answer

Job costing tracks revenue and direct costs for each project so service and trade businesses can see gross profit and gross margin instead of relying on total revenue.

What job costing means for a service or trade business

Job costing means tracking the revenue and the direct costs of a single job in the same place, so you can see whether that job actually made money. Instead of looking at one big revenue number at the end of the month, you look at each job and ask whether the price covered labor, materials, equipment, and the trip it took to get there.

A job can be an installation, repair, cleanup, project, or week of recurring route work. The point is the same: know the margin, not just the revenue.

What to track on every job

Good job costing comes down to capturing a few things consistently on every job.

Customer, project, and service type
Revenue for the job
Labor hours and labor cost by crew member
Materials, parts, supplies, and consumables
Equipment rental or small equipment allocation
Dump fees, disposal, and delivery
Subcontractors
Fuel and material pickup time
Payment processing fees

Direct job costs vs. overhead

Direct job costs are the costs that exist because the job exists: materials, labor, rentals, disposal, and subcontractors. Overhead is what keeps the business running whether or not you do that job: insurance, software, office costs, and advertising.

The most common job costing mistake is letting direct costs slide into overhead. When materials and rentals get buried in general expenses, every job looks more profitable than it really is, and the P&L cannot tell you which work to do more of.

How to calculate gross profit and gross margin

Gross profit is revenue minus direct job costs. Gross margin is gross profit divided by revenue, shown as a percentage. Margin lets you compare a $2,800 service job to a $9,000 installation fairly: the bigger job is not automatically the better one.

Job examples by type of work

The same math applies across service calls, trade projects, installations, and recurring work.

Mulch job

Revenue: $2,800
Materials: mulch, pre-emergent, delivery, disposal
Labor: crew hours by worker
Equipment: small equipment or rental allocation
Other: fuel, dump fees, payment fees
Gross profit = revenue minus direct costs · Margin = gross profit / revenue

Tree planting and install example

Material-heavy jobs live or die on markup and labor.

Tree planting / install

Revenue: $9,000
Materials: trees, soil, amendments, stakes
Labor: crew hours plus heavier equipment time
Equipment: rental or allocation for larger machines
Subcontractors: if any specialty work is hired out
Watch: material markup and labor are where margin is won or lost

Seasonal cleanup and mowing route examples

Recurring and labor-heavy work needs the same scrutiny.

Cleanup, gravel, and mowing route

Cleanup: revenue, crew labor, dump fees, disposal, hauling
Gravel or rock job: revenue, rock/gravel, equipment rental, labor, delivery
Mowing route: weekly revenue vs. crew labor, fuel, and drive time across the stops
Ask: does the route still make sense after labor, fuel, and maintenance?

How to set this up in QuickBooks

In QuickBooks Online, you can track jobs using customers and sub-customers (or projects), assign income and expenses to each job, and use products and services that map back to the right income and cost accounts. Tag labor, materials, equipment, and subcontractors to the job so the profitability report is real.

If your file is not set up this way yet, that is normal. It is usually fixed during a cleanup or setup before monthly bookkeeping begins.

Step by step

Put the guide into practice.

Set up jobs

Create a customer or project for each job in QuickBooks so income and costs can be tagged to it.

Tag revenue and direct costs

Assign job revenue, labor, materials, equipment, dump fees, and subcontractors to the job.

Keep direct costs out of overhead

Make sure materials, rentals, and disposal are coded as job costs, not general expenses.

Calculate gross profit and margin

Subtract direct costs from revenue, then divide gross profit by revenue for margin.

Use the numbers to price the next job

Compare margins across job types and adjust estimates, crew planning, and markup.

Frequently asked questions

Questions owners ask next.

What is the difference between job costing and just looking at revenue?

Revenue tells you how busy you were. Job costing tells you whether the work made money after labor, materials, equipment, and disposal. Two jobs with the same revenue can have very different margins.

Do I need expensive software to job cost?

No. QuickBooks Online can handle job costing with customers, projects, and products mapped to the right accounts. The bigger requirement is tracking labor, materials, and equipment to the job consistently.

What is a good gross margin for service or trade work?

It varies by service line and market, so compare your own jobs to each other over time rather than to a single benchmark. The goal is to see which work earns the best margin and price accordingly.

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