Job Profitability by Service Type
Why this matters
Total profit hides as much as it reveals. A shop can be making money overall while losing it on a whole category of work, propped up by a few strong service types carrying the rest. If you only look at the bottom line, you keep selling the losers and never push the winners. Breaking profit down by service type shows you which work to chase, which to re-price, and which to drop. It is the difference between running a business and running a guess.
What "profitability by service type" means
Service types are the buckets of work your shop sells: diagnostics, repairs, installs, maintenance agreements, emergency calls, and so on. Each behaves differently. A quick diagnostic and a full system install have nothing in common in their cost structure, their margin, or their time.
Profitability by service type means measuring, for each bucket, how much it actually earns after its own costs, expressed as a margin (profit as a percentage of revenue). Done right, it ranks your work from most to least profitable and tells you where your real money comes from.
What to count: getting the true cost of each job
A margin is only honest if the costs behind it are complete. For each service type, count:
- Materials used on that work.
- Labor, the actual hours, at a loaded rate. Loaded means including the cost of employing the tech (payroll taxes, benefits, downtime), not just the hourly wage. A tech costs more per hour than their wage line suggests.
- Job-specific costs, permits, subcontractors, equipment rental, the travel and fuel to get there.
Then weigh in the costs that quietly kill margin and rarely make the estimate:
- Travel and windshield time. A service type with short jobs spread far apart can have terrible real margin once drive time is counted, even if each ticket looks fine.
- Callbacks and rework. Work you have to revisit costs you twice and crushes the margin on that category.
- Unbillable overhead share. Every job should ultimately help cover rent and admin, but compare service types on their direct margin first, then check that each carries its fair share.
Reading the numbers: high margin versus high volume
Two service types can both be worth keeping for opposite reasons. Sort your work on two axes:
| High margin per job | Low margin per job | |
|---|---|---|
| High volume | Your core engine. Protect and grow it. | Worth keeping only if it fills capacity or feeds other work. |
| Low volume | Premium niche. Charge for the expertise; do not underprice it. | The danger zone. Often a money loser disguised as "service we offer." |
The intuition to build: do not judge a service type by margin alone or volume alone. A modest-margin service done constantly can out-earn a fat-margin service you sell twice a year. And a thin-margin, low-volume category is usually pure drag, you do it out of habit, and it loses money every time.
What the breakdown tells you to do
Once the work is ranked, the actions follow naturally:
- Push the winners. If a service type earns strong margin at decent volume, that is where marketing, training, and capacity should go. Sell more of what already makes money.
- Re-price the leakers. A category with chronically thin margin is usually mispriced, not unfixable. Raise the price or tighten the scope before you abandon it.
- Cut or contain the losers. A service type that loses money at low volume with no strategic payoff should go, or be priced high enough that you do not care if you win it.
- Watch the mix. If your work is drifting toward your lower-margin categories, your overall margin will sink even as revenue holds. The mix matters as much as the volume.
Common traps that hide the truth
- Averaging everything together. A blended margin lets a strong category mask a bleeding one. Always break it out.
- Ignoring labor's true cost. Wage alone understates the cost of a tech's hour. Use a loaded rate or every install will look more profitable than it is.
- Forgetting drive time. Short, scattered jobs eat margin in the truck, not on the work order.
- Crediting maintenance agreements only for their own ticket. Their value is often the repairs and replacements they lead to. Look at the relationship, not just the recurring line.
Start by sorting your last several months of work into service types and computing a rough margin for each. The first time you do it, the ranking almost always surprises you, and that surprise is the whole point.
References
- SBA guidance on job costing and pricing for service businesses
- Standard managerial-accounting practice on margin analysis and loaded labor rates
- See related: Should I Take This Low-Margin Job?
- See related: Build Your First Annual Budget