How to Read Your Own P&L Without an Accountant

Your accountant builds the statement. You have to know what it says.

Every P&L has three sections — Revenue, Cost of Goods Sold, Operating Expenses — and five lines that actually matter. Read those five in order and ask one question at each line. You do not need a finance degree. You need the discipline to look.

1. Revenue — is this what I expected?

   The easy number. It is what you sold, net of refunds. Compare it to last quarter, last year, and the quarter you thought you were going to have. Revenue is a fact; the rest of the statement tells you what the fact cost.

2. COGS — is this line growing faster than revenue?

   Cost of Goods Sold is only what it cost to deliver the specific work you sold — materials, direct labor, freight in. Software, rent, your salary — not COGS. If COGS is creeping up relative to revenue, either costs are rising or pricing is falling behind.

3. Gross Profit Margin — am I making enough on each job to run the business?

   Gross Profit ÷ Revenue × 100. This is the single best indicator of whether you are pricing correctly. Two contracting businesses with the same revenue and very different gross margins are in very different positions. If your P&L does not show this line, calculate it yourself.

4. Operating Expenses — have these grown without the business growing?

   Rent, insurance, software, marketing, your salary, utilities. This is where the leaks live. Software subscriptions you forgot, insurance that renewed high, payroll that grew when you hired. Individually fine, collectively the reason revenue rises and profit does not.

5. Net Income — given what I just saw, is this number explainable?

   Look at the bottom number last. Net Profit Margin = Net Income ÷ Revenue. A thin net margin two quarters in a row is not a cushion — it is a warning. The thinner it is, the less room you have to absorb a bad month, a lawsuit, or an insurance claim.

Before line one: cash or accrual?

Ask which method your books use, because it changes what every line means. Under the cash method you generally report income when you receive it and deduct expenses when you pay them; under the accrual method you report income when you earn it and deduct expenses when you incur them (IRS Publication 538, Accounting Periods and Methods). Same business, same month, two different statements. On cash, a great month can just be three late invoices paid at once. On accrual, a profitable month can include money your customers have not paid you yet.

What the P&L will not show you

Profit is not cash. The income statement shows what you earned over a period; the balance sheet shows what you own and owe on one date; the cash flow statement shows the cash that actually came in and went out, and the SEC's guide to financial statements describes cash flow as related to net income but not the same thing (SEC, Beginners' Guide to Financial Statements). Depreciation is a non-cash expense, and a new truck or piece of equipment leaves your account as cash long before it shows up as expense. Read the P&L to learn whether the work makes money. Read the bank balance and the list of unpaid invoices to learn whether you can make payroll.

Put it on the calendar

Pick a date each month, after your bookkeeper closes the books, and read the five lines in order. Write one sentence per line in the margin. Three months of margin notes will tell you more about your business than any single statement.

Every P&L has three sections — Revenue, Cost of Goods Sold, Operating Expenses — and five lines that actually matter. Read those five in order and ask one question at each line. You do not need a finance degree. You need the discipline to look.

— The one-sentence answer