To set up job costing software for trade work, the goal is to make every expense get tagged to:

1. A project/job
2. A cost code that describes the type of work
3. Optionally, a cost category like labor, materials, subcontract, equipment, overhead

Here’s a practical setup process that works well for contractors and trade businesses.

1) Define your job costing structure first

Before software setup, decide how you want to track costs.

A. Project / Job

Create one record for each:

• Customer project
• Service job
• Work order
• Phase, if you want to track large jobs by phase

Examples:

• Smith Remodel
• ABC Office HVAC Retrofit
• 2026 Main St Roof Replacement

B. Cost codes

Use cost codes to group expenses by work type. For trade work, a simple and consistent code list is best.

Common examples:

• 1000 Mobilization
• 2000 Demo
• 3000 Framing
• 4000 Electrical
• 5000 Plumbing
• 6000 HVAC
• 7000 Drywall
• 8000 Paint
• 9000 Cleanup

If you’re in a specific trade, make codes match your workflow. For example:

• Plumbing: rough-in, trim-out, fixtures, testing
• HVAC: demo, ductwork, equipment install, startup
• Electrical: service, rough-in, trim, panel, lighting

C. Cost types

Set up categories for what kind of expense it is:

• Labor
• Materials
• Subcontractors
• Equipment
• Permits/fees
• Other direct costs

This helps you analyze job profitability later.

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2) Build a cost code list that matches your trade

Keep the list:

• Simple
• Consistent
• Not too detailed at first

A good rule: if a code won’t help you estimate, track, or manage costs, don’t include it.

Example structure

You can use a numbering system like:

• 1000s = pre-job / general conditions
• 2000s = demolition
• 3000s = rough-in
• 4000s = finish work
• 5000s = closeout

Or use division-based codes if your software supports it, like:

• 01 General Conditions
• 02 Site Work
• 03 Concrete
• 04 Masonry
• 05 Metals
• 06 Wood/Framing
• 07 Insulation
• 08 Openings
• 09 Finishes
• 10 Mechanical
• 11 Electrical
• 12 Plumbing

If you’re a trade contractor, you may want a lighter version tailored to your work instead of a full construction CSI-style list.

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3) Set up the software master data

In the software, create:

• Customers
• Projects/jobs
• Cost codes
• Vendor list
• Employee/labor list
• Item/service catalog, if available

For each project, set:

• Job name
• Job number
• Start/end dates
• Customer
• Project manager
• Budget by cost code, if possible

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4) Connect expense coding to workflows

The software should let you assign job + cost code when you enter costs.

For AP bills

When entering a vendor invoice:

• Select the project
• Select the cost code
• Select the cost type
• Enter line-item amounts

Example:

• Supplier: Home Depot
• Project: Smith Remodel
• Cost code: 8000 Paint
• Type: Materials
• Amount: $428.60

For purchase orders

If your software supports POs:

• Create PO by project
• Assign cost code to each line
• Match bills back to PO lines

For employee timecards

Have workers or supervisors code time by:

• Project
• Cost code
• Work type
• Possibly phase or task

Example:

• Employee: John D.
• Project: ABC Office HVAC Retrofit
• Cost code: 6000 HVAC
• Hours: 8.0

For credit card and expense entries

Use mobile capture or receipt upload:

• Project
• Cost code
• Category
• Photo of receipt

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5) Train the team on coding rules

This is where most systems fail. Everyone needs the same rules.

Good rules to define

• Every expense must have a project
• Every direct cost must have a cost code
• Labor must be entered daily
• Materials bought for multiple jobs must be split by line or allocated
• Overhead expenses should not be coded to jobs unless you intentionally do so

Create a simple reference sheet

Make a one-page cheat sheet with:

• Common cost codes
• What belongs in each code
• Examples of acceptable coding

Example:

• 4000 Electrical = wire, outlets, switches, panel labor
• 5000 Plumbing = pipe, fittings, valves, fixtures
• 9000 Cleanup = dump fees, final cleaning, trash bags

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6) Decide how to handle overhead vs job costs

Only code direct job costs to projects. Keep overhead separate unless your business model requires otherwise.

Direct job costs

• Materials
• Labor on-site
• Subcontractors
• Equipment used for the job
• Permits specific to the job

Overhead

• Office rent
• Administrative salaries
• Marketing
• Insurance
• Software subscriptions
• General shop supplies

Some contractors allocate overhead later for estimating and pricing, but don’t mix it into job costing unless you know why.

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7) Set budget and estimate baselines

For each project, enter:

• Estimated labor hours
• Estimated materials
• Estimated subcontract costs
• Estimated total by cost code

Then compare:

• Estimated vs actual
• Labor budget vs actual
• Material budget vs actual
• Gross margin by job

This gives you early warning when a job is going off track.

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8) Use consistent naming and numbering

Use one format everywhere:

• Job numbers
• Cost code numbers
• Vendor names
• Item names

Example:

• Job 2026-014 Smith Remodel
• Code 4000 Electrical
• Code 8000 Paint

Avoid free-form labels like “electrical stuff” or “paint supplies.”

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9) Test the setup with one real job

Before rolling it out company-wide:

• Pick one active project
• Code every bill, time entry, and receipt
• Review reports weekly
• Fix confusing codes
• Remove unused codes

A pilot job will show you what needs adjustment.

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10) Review the reports you actually need

Make sure your software can show:

• Job profit by project
• Cost by cost code
• Labor vs material vs subcontract
• Budget vs actual
• WIP, if you do larger jobs
• Unbilled costs

If reports are too complex, simplify the code structure.

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Simple recommended setup for trade work

If you want a straightforward starting point, use:

Project fields

• Job number
• Customer
• Site address
• PM/supervisor
• Start/end date

Cost code groups

• General conditions
• Demo
• Rough-in
• Install
• Finish
• Cleanup
• Permits
• Subcontract

Cost types

• Labor
• Materials
• Subcontract
• Equipment
• Other

This is usually enough to get accurate job costing without overcomplicating things.

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Best practices

• Keep cost codes stable once jobs start
• Don’t create a new code for every little thing
• Require coding at the time of entry
• Review uncoded transactions daily or weekly
• Use mobile tools for field staff
• Reconcile job costs monthly

If you want, I can also give you:

1. A sample cost code chart for a specific trade like plumbing, electrical, HVAC, roofing, or remodeling, or
2. A step-by-step setup checklist for QuickBooks, Xero, Buildertrend, or Procore.