Corvus Accounting

Job & Project Costing

Job and Project Costing for Contractors and Trades Businesses

Job costing tracks the labor, materials, equipment, subcontractors, and overhead tied to each job, so you can see the real profit on every project. Corvus Accounting sets up and manages job costing for plumbers, electricians, HVAC companies, contractors, landscapers, and other trades businesses.

Without job costing, your P&L shows whether the business made money overall. It can’t tell you which jobs, customers, or service lines made it, and which ones quietly lost it.

By Suzanne Leonard, Founder, Corvus Accounting · Last reviewed November 2026

Free, no-obligation consultation. Serving small businesses nationwide.

What You'll See

What Job Costing Shows You

Profit on Every Job

Gross and net profit for each job, after its share of overhead.

Estimate vs. Actual

How each job’s final cost compared with the bid, so the next bid is sharper.

Best Service Lines

Which work earns the most: installs, service calls, or maintenance plans.

Crew Performance

Which crews or project managers bring jobs in on budget.

Where Costs Run Over

Labor hours and materials that consistently exceed the plan.

Where to Raise Prices

The data you need to price with confidence.

The Hidden Cost

How Overhead Eats Into Job Profit

A job can look profitable on gross margin and still lose money once overhead is counted. Overhead is everything it takes to keep the business running that isn’t tied to one job: office rent, insurance, trucks and fuel, software, admin staff, and owner time. Those costs never show up on a job ticket, but every job has to help pay for them.

That’s why we track overhead on every job, not just direct costs. We calculate an overhead rate from your actual books and apply it to each job, so every job report shows both gross profit and net profit after overhead.

Example jobAmountMargin
Job revenue$10,000
Direct costs (labor, materials, subs)$7,000
Gross profit$3,00030% of revenue
Overhead share (22% of revenue)$2,200
Net profit$8008% of revenue

Illustrative example. If your overhead runs 22% of revenue, any job priced below a 22% gross margin loses money, even though it looks profitable on paper.

What tracking overhead on every job shows you

  • Your true break-even margin for every job
  • Which jobs cover their share of overhead and which don’t
  • How to price bids to cover overhead and still leave a profit
  • When rising overhead, like a new truck or hire, means your prices need to change

How It Works

How We Set Up Job Costing

1. Define the Structure

We decide how jobs, phases, and cost codes are tracked for your trade.

2. Build the Chart of Accounts

A job-costing-ready chart of accounts with direct costs separated from overhead.

3. Connect the Data

Time, materials, and invoices tagged to the right job in your system, or in Zoho Books and Zoho Projects.

4. Report and Review

Job profitability reports, reviewed with you to adjust pricing and estimating.

Plain English

Job Costing Terms, Explained

TermWhat It Means
Direct costsCosts tied to one job: labor, materials, subs, equipment rental
OverheadCosts of running the business: office, insurance, admin, trucks
Gross marginJob revenue minus direct costs, as a percentage of revenue
Estimate vs. actualHow the job’s final cost compared with the bid
WIP (work in progress)Revenue and cost on jobs that aren’t finished yet

We use a custom job costing template built in Zoho and tailored to each trade.

Common job costing mistakes

  • Leaving labor out of job costs, or using wages without burden (taxes, benefits, insurance)
  • Coding materials to a general expense account instead of the job
  • Ignoring overhead, so every job looks more profitable than it is
  • Never comparing estimates to actual results

FAQ

Frequently Asked Questions

What is job costing in accounting?

Job costing is a method of tracking every cost tied to a specific job or project (labor, materials, subcontractors, and equipment) and comparing it with what you billed. The result is a profit figure for each job, so you know which work is worth doing more of and which work needs a price change.

Why do contractors need job costing?

Contractors price work in advance, so a small miss on labor or materials on every job adds up fast. Job costing shows where estimates are off, which jobs lose money, and which customers or service lines are most profitable. It turns pricing from a guess into a decision based on real data.

Can I do job costing in my current accounting software?

Often, yes. Most modern accounting systems support job or project tracking once the chart of accounts and workflow are set up correctly. For businesses that want time, projects, and books fully connected, we implement Zoho Books and Zoho Projects.

How long does it take to set up job costing?

It depends on your number of jobs, how your team tracks time and materials today, and the condition of your books. Most of the work happens up front in the setup. After that, job reports come from the regular bookkeeping workflow.

How do you allocate overhead to each job?

We total your overhead from your books, then convert it into a rate, typically a percentage of revenue or a cost per labor hour, depending on how your trade works. That rate is applied to every job so each one carries its fair share. We review the rate regularly as your overhead changes, so job reports always reflect your real costs.

How much does job costing setup cost?

Job and project costing is scoped and quoted after your free consultation, based on your trade, job volume, and whether we’re working in your current system or building a new one.

Related: Zoho Implementation · Fractional CFO & Strategy · Cash Flow Forecasting

Beyond the Numbers

Find Out Which Jobs Actually Pay

Book a free, no-obligation consultation and we’ll show you what job-level profitability reporting looks like for your trade.

Stuck on one specific problem? Book a free problem solving session →