Ask yourself what your margin is and you can probably answer fast: "I mark up materials, I know my hourly, I'm at about a third." That number feels solid because it's built from the parts you can see. The catch is that the margin you assume can be built from a shorter list than the margin you actually earn.
The gap between those two numbers — assumed margin and true margin — is where profit quietly disappears. Not because anyone did anything wrong, but because the easy-to-see costs get counted and the easy-to-miss ones don't.
What assumed margin leaves out
When you price by feel or by a flat rate, the mental math naturally leans on materials and the obvious labor. True margin is what's left after everything a job really consumes. The pieces that are easiest to underestimate or skip:
- Loaded labor, not just the wage. The real cost of an hour of work includes payroll taxes, insurance, and the other costs of employing someone — not just what lands in their paycheck. The hourly cost is higher than the hourly wage, and pricing off the wage quietly thins every job.
- Materials, honestly. Not just the big line items — the consumables, the waste, the extra trip when something's short.
- Overhead. The fixed cost of being in business has to be carried by the work. If you don't deliberately build a share of it into each price, it comes out of your profit at the end of the month instead.
- Non-billable time. The driving, quoting, sourcing, admin, and callbacks around a job are real hours with a real cost. They rarely make it onto an invoice, but they always make it onto the calendar.
Add those back in and the "one-third" you assumed can look very different. That's not a trick of accounting. It's just the full picture instead of the visible half of it.
What a "trade reference range" is — and what it is not
Once you can see your true margin, the natural next question is: is that good? Here's where it's easy to get led astray. Some tools and articles will quietly compare you to a "peer average" or an "industry average" — a single number that's supposed to represent what everyone else is doing.
MarginSmith deliberately doesn't do that. We compare your true margin to a trade reference range — a directional range for your kind of work — and we're explicit that it is not a peer average. Averages hide as much as they reveal: they blend strong and struggling operators into one misleading midpoint, and they invite you to feel fine because you're "about average." A reference range is a sanity check, not a scoreboard. It tells you roughly where healthy tends to sit for work like yours, without pretending to know your exact competitors or dressing up a made-up benchmark as fact.
Why we show the math
There's a reason MarginSmith shows the calculation instead of just handing you a verdict. When a number about your own business appears out of nowhere, you shouldn't trust it — and you won't act on it. When you can see how true margin was built from your own inputs, the number becomes something you can trust, because you can follow it. That's the whole idea behind Profit Intelligence: not a black box that grades you, but a clear read on your economics, with the math shown, so the next decision is yours and it's an informed one.
What to look at this week
You can start closing the gap between assumed and true margin without changing a single price yet:
- Recalculate one hour of labor as a cost, not a wage. Add the real costs of employing someone. Use that number, not the paycheck number.
- Write down your monthly overhead — everything you'd still pay if you did zero jobs — and divide it across the jobs you actually do. That's the slice each job should carry.
- Count the non-billable hours around your last job. Drive, quote, parts, paperwork, callback. Put a dollar cost on them.
- Re-run one recent job with all of that included and compare the result to what you assumed it made.
You may find the job was stronger than you thought. You may find it was thinner. Either way, you'll be working from your true margin instead of a guess.
The one move to make next
Doing this by hand for one job is clarifying. Doing it in two minutes for your work overall is the point of the Free Profit Check: your true margin against a trade reference range (not a peer average), where your profit is leaking, and the one move to make next — with the math shown. No credit card.
MarginSmith is Profit Intelligence built only for licensed trade contractors.