Your P&L Is Lying to You
(Sort Of)

I was sitting across from a contractor a while back — solid guy, been running his company for about eight years, good reputation, busy as hell. He slid his year-end numbers across the table and said something I've heard more times than I can count: "Revenue was up almost 20% last year. I don't understand why I'm not making more money."

He wasn't panicking. He was genuinely confused. And that confusion is exactly the right place to start, because it means the numbers are finally telling him something he hasn't heard before. The problem was he didn't know how to listen to them yet.

That's what I do. I sit in that room and I help people hear what their financials are actually saying.

The Report Card Problem

Most operators I work with treat their profit and loss statement the same way. It shows up — usually from their accountant, usually after the year is done — they flip through it, they see whether the bottom line is up or down, and they go back to running jobs.

That's not reading your P&L. That's glancing at it.

The P&L is a historical document. It tells you what happened. And if you're only looking at it once a year, you're essentially driving by looking in the rear-view mirror. You can see where you've been. You have no idea what's coming, and by the time you see the problem, you're already past it.

The other issue is where people look. Most guys go straight to the bottom line — net profit. That number is real, but it's also the last number on the page for a reason. It's what's left after everything else has already happened. If something went wrong, it went wrong way earlier in the document. You just didn't catch it there.

What Was Actually Eating the Margin

Back to my client. We pulled up his P&L and started working through it line by line. Not the summary version — the actual detail.

What we found wasn't one big problem. It was four or five small ones that had been quietly growing for a couple of years. Material handling costs had crept up. Subcontractor rates had gone up during a busy stretch — which is normal — but they'd never come back down when things slowed, and nobody had renegotiated. There were a few line items in his cost of goods sold that individually looked like rounding errors. Together they were taking a real bite.

Here's the thing about creeping costs: they don't feel like emergencies. A line item that goes from $4,200 to $5,800 over two years doesn't set off any alarms. You're busy, you're running jobs, you're not scrutinizing every category every month. But when you've got four or five of those happening at the same time, across a business that's also growing, the compounding effect is significant. Revenue goes up. Margin gets thinner. Net profit flatlines. Creeping costs are only one of the ways it happens — there's a whole catalogue of profit leaks that quietly drain a trades business, from unbilled project management time to absorbed material increases.

He'd been working harder, taking on more volume, and essentially running faster to stay in the same place — busy and broke at the same time, which is its own kind of trap. He didn't know that because he wasn't looking at the right part of the document.

The Distinction That Actually Matters

Here's what I told him, and it's the thing I come back to with almost every client I work with on financials.

Your P&L tells you the story after the fact. Gross margin by project tells you the story while there's still time to do something about it.

Those are two different documents. Most small operators are only looking at one of them.

Gross margin by project means you're tracking, on every job, what you brought in versus what it actually cost you to do the work — materials, labour, subs, direct costs. Not overhead, not your own salary, just the direct cost of that specific project. What's left is your gross margin on that job.

When you track that consistently, patterns show up fast. You start to see which project types are actually profitable for you and which ones look good on paper but eat your margin every time. You see when a sub's rates are drifting. You see when your material costs on a certain category are running higher than your estimates. You see it in real time, not twelve months later when your accountant hands you a summary.

My client had never tracked it that way. He had a sense of which jobs "felt" profitable, but he'd never actually run the numbers by project. When we started doing that, the picture got a lot clearer very quickly.

What to Actually Do About It

You don't need to become an accountant. You need to get curious and ask better questions.

Start with your bookkeeper or accountant. Ask them to walk you through your P&L line by line — not the summary, the detail. Ask them to explain every category in your cost of goods sold until you understand what's in it. If something doesn't make sense, keep asking. That's not a dumb question. That's you doing your job as the owner. And clean, well-understood books pay off beyond your own clarity — they're also what makes you fundable when you go looking at the financing options most trades owners assume are closed to them.

Then ask them to help you set up a simple job costing process if you don't have one. It doesn't have to be complicated. A spreadsheet works. The goal is that when a job closes, you know what it actually cost versus what you estimated, and you're tracking that somewhere you can look at it.

Once you've got a few months of that data, start looking for patterns. Which job types are consistently hitting your margin targets? Which ones aren't? Where are your estimates consistently off? That's where the real work is — a pricing gap you don't catch is exactly how I lost $22,000 on a single job early in my career.

The other thing I'd say: look at your P&L more than once a year. Monthly is ideal. Quarterly at minimum. The more often you look at it, the faster you'll spot something moving in the wrong direction — and the more time you'll have to do something about it before it shows up as a problem at year-end.

The Bottom Line

A P&L that shows revenue up and profit flat isn't a mystery. It's a signal. Something in your cost structure changed, and the document is telling you that — you just have to know where to look and how often to look. The operators who build real margin over time aren't necessarily the ones doing the most volume. They're the ones who understand their numbers well enough to catch problems early and make decisions based on data instead of gut feel. Knowing your numbers that cold is one of the moves that separates the contractors who grow from the ones who stay small.

If your numbers aren't making sense — or you've never really dug into them — that's exactly the kind of thing I work through with clients, line by line. It's the core of what my construction business coaching is built around.