Most service businesses are losing money on every job and don’t know it.
Not because they’re underpriced. Because they’re using the wrong math.
If you add 25% to your costs and think you just made a 25% profit margin, you didn’t. The gap between what you think you made and what you actually made is real money. Across a year of jobs it adds up to a number that would have changed how you ran the business.
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Take the free scorecard →I run a pricing audit on every coaching client I take. The first thing I check is which math they’re using. About 7 in 10 are doing it wrong, and not by a little.
Two numbers that sound the same and aren’t
- Markup is calculated on your cost.
- Margin is calculated on your revenue.
They’re not interchangeable, and the gap matters.
I’ll show you one worked example so you see the shape of it. You quote a kitchen remodel at $40,000. Your costs come in at $32,000. You pocket $8,000.
If you call that “25%,” you’re partly right and dangerously wrong. It’s a 25% markup. It’s a 20% margin. Same dollar amount, different denominators. And every pricing decision that gets made downstream of “I’m making 25%” is built on the wrong number.
This isn’t a contractor problem. It’s a service-business problem. Agencies, freelancers, food bloggers running digital products, remodelers, designers, coaches. Anyone whose pricing flows from “cost plus” is doing this math, and most are doing it wrong.
What this is actually costing you
I’ll give you the shape, not the formula.
On a $300,000/year service business, the gap between thinking you have a 25% margin and actually getting one is roughly $14,000/year of profit you didn’t pocket. Same revenue. Same hours. Same overhead. Just the wrong markup multiplier on every quote.
At $500,000/year, the gap pushes past $24,000.
It compounds. Year after year. The longer you’ve been in business with the wrong math, the bigger the cumulative miss.
That’s the difference between a vacation and “we couldn’t get away this year.” Between making your first hire and another year of doing it all solo. Between a profitable business and one that’s “doing fine, I think.”
Why nobody fixes it on their own
Three reasons.
One: retail markup math was built for products. T-shirts, lipstick, toaster ovens. Buy for $5, mark up 100%, sell for $10. For physical goods sitting on a shelf, markup math is fine. There’s no labor carried forward, no overhead allocation, no project risk.
Two: service businesses inherit product-business math from their bookkeeper, their CPA, their last 6 jobs, the way it was always done. The mistake is so universal it looks like the standard.
Three: the actual fix isn’t a one-line formula. It’s a multiplier that depends on your overhead allocation, your true labor burden (which is also wrong on most P&Ls), and the margin you actually need to clear after taxes. The “fix” most coaches sell is a single number that breaks the moment your overhead changes. The real fix is a model.
What I do for clients
When I run a pricing audit, I rebuild the model from scratch:
- Audit the actual math you’re using right now. Not what your CPA says, what’s coming out of your last 10 invoices.
- Reconstruct true cost. Labor burden with the hidden numbers folded in (workers’ comp, equipment depreciation, the time you don’t bill), real overhead allocation per job, not just “10% across the board.”
- Set your target margin from your life, not your industry. What you actually need to take home, after taxes, to make this worth running.
- Build the multiplier table that converts your cost into the price that hits the target, and stress-test it against your last 12 months of jobs to see what would have changed.
Most clients leave that audit with two numbers they didn’t have before: how much money the old math was costing them, and exactly what to charge on the next quote.
That math is yours. The model is yours. The framework is mine.
Get the math fixed
If your business has gotten past the “a spreadsheet covers it” stage (multiple jobs in flight, a team, a P&L that’s gotten complicated), that’s when a Profit Audit is the right move. We go through your numbers together, rebuild the model, and you walk out with the right markup for your actual business.
Either way, you stop quoting on math you can’t defend. Build smarter so you can scale faster.
— Belkis
Resources
- SBA 2024 Small Business Economic Bulletin: small-business margin data by industry, why most service businesses run thin
- IRS Schedule C instructions: the boundary between “cost” and “overhead” for tax purposes (matters for the math)
- Profit Audit: book a working session
