How to Read a Construction P&L (Without an Accounting Degree)

Why most contractors don't read their P&L

Because it's not built for them. A generic P&L has lines like "Revenue," "Cost of Goods Sold," "Gross Profit," and 40 expense categories that all blur together.

That report was built for an accountant, not a builder. Here's how to read it like an owner.

The 5 numbers that matter

1. Revenue (top line)

This is what you billed. Not what you collected — what you invoiced. If this number is growing but your bank account isn't, you have an AR problem.

2. Direct costs (COGS)

This is what it cost you to do the work: materials, labor, subs, equipment. On a construction P&L, this should be broken out by job if your books are set up right.

3. Gross profit (and gross margin %)

Revenue minus direct costs. This is the money left over before you pay for your truck, your office, your insurance, and yourself. For most contractors, healthy gross margin is 25–35%.

If yours is under 20%, you're either underpricing or your costs are leaking.

4. Overhead

Everything that isn't tied to a specific job: rent, insurance, office staff, your salary, your truck payment. This number should be predictable. If it's not, something is hiding in here.

5. Net profit (bottom line)

Gross profit minus overhead. This is what you actually keep. Healthy range for contractors: 5–12%. Under 5% means one bad job wipes out your year.

The one ratio to memorize

Gross margin %. Revenue ÷ Gross Profit = your margin. Track it monthly. If it moves more than 2 points, something changed on a job and you need to find it.

What a construction P&L should look like

The best construction P&Ls show gross margin by job, not just in total. That way you can see that the Smith kitchen remodel ran 31% margin while the Johnson bathroom ran 14%.

That's the difference between knowing your business and guessing.

Want a P&L that actually shows you margin by job? See how we build it.