How to Read Your P&L in 10 Minutes

Your profit & loss statement (P&L, also called an income statement) shows what your business earned and spent over a period of time. You don’t need an accounting degree to read it. Here’s a simple routine you can run every month in about ten minutes.

Minute 1–2: Start at the top — revenue

Revenue (or income, or sales) is everything your business billed or earned in the period. Ask: is it higher or lower than last month? Than the same month last year? Is the change what you expected?

Minute 3–4: Cost of goods sold and gross profit

Cost of goods sold (COGS) is what it directly costs to deliver what you sell — materials, products, sometimes direct labor. Revenue minus COGS is gross profit.

Divide gross profit by revenue to get your gross margin. This percentage is often more useful than the dollar amount, because it shows whether each sale is as profitable as it used to be.

Minute 5–6: Operating expenses

These are the costs of running the business regardless of how much you sell — rent, software, insurance, office salaries, marketing. Scan for anything unusually high, and for categories that are creeping up month after month.

Minute 7: Net income

Gross profit minus operating expenses (plus or minus other income and expenses) is net income — your bottom line. Again, compare it to prior periods, and look at it as a percentage of revenue.

Minute 8–9: Compare, don’t just look

A single P&L in isolation tells you little. Run it side by side with the previous month and the same month last year. Many accounting systems can also show each line as a percent of revenue, which makes trends jump out.

Minute 10: Remember — profit isn’t cash

A profitable month can still leave your bank account lower. The P&L doesn’t show loan principal payments, money owed to you that hasn’t been collected yet, inventory you bought, or what you took out as an owner. For the full picture, pair it with your balance sheet and cash flow statement.

Quick red flags

• Gross margin dropping while revenue rises
• An expense category growing faster than revenue
• Big swings from month to month with no clear reason
• Large amounts in “Uncategorized” or “Other” lines

If your P&L raises more questions than it answers, the issue may be the books underneath it rather than the business itself.