A profit and loss statement reads from top to bottom. Revenue sits at the top, costs and expenses come next, and what’s left at the bottom is your profit or loss. That structure is straightforward enough. The harder part is knowing what the numbers are actually telling you about your business.

Revenue is your starting point. This is total income before anything gets subtracted. Look at whether revenue is growing, flat, or shrinking compared to prior months. If revenue went up but you feel like there’s less money available, something below the top line is eating into it. That’s exactly what the rest of the statement will show you.

Below revenue you’ll typically see cost of goods sold or direct costs. These are the expenses directly tied to delivering your product or service. For a cleaning company that’s labor and supplies. For a trucking company that’s fuel and driver pay. Subtract these from revenue and you get gross profit. This number tells you how much you keep from every dollar of revenue before overhead, and it’s one of the most important lines on the entire statement. If your gross profit margin is shrinking month over month, you’re spending more to earn each dollar and no amount of sales growth will fix that.

Operating expenses come next. Rent, insurance, software subscriptions, office supplies, marketing, and payroll for people not directly producing revenue. These are your costs of keeping the business running regardless of how much you sell. Look at each line item as a percentage of revenue rather than just a dollar amount. Paying $2,000 a month in marketing feels different when revenue is $20,000 versus $50,000. Percentages give you context that raw numbers don’t.

Net profit is the bottom line. It’s what remains after everything is paid. A healthy net profit percentage depends on your industry, but most small businesses should aim for 10% to 20%. If you’re consistently below that, the P&L will show you exactly where the money is going.

The most useful thing you can do with a P&L is compare it across time. Look at three, six, or twelve months side by side. A single month is just a snapshot. Trends across months reveal patterns. Maybe your supply costs spike every summer. Maybe payroll crept up 15% over six months without a corresponding increase in revenue. These patterns are invisible in a single month’s report but obvious when you line them up. Working with a bookkeeper in Pearland who understands your business means your P&L is organized in a way that surfaces these patterns clearly.

Watch for expenses that get lumped into vague categories. If a big chunk of your spending lands in “miscellaneous” or “other expenses,” you lose visibility into where money actually goes. Every dollar should be categorized specifically enough to be useful. Good bookkeeping makes this happen automatically so the P&L tells a real story every month.

Finally, don’t just read the P&L. Use it. If gross margins are dropping, figure out if your pricing needs to change or if costs have shifted. If a specific expense line is growing faster than revenue, decide whether that spending is driving growth or just draining cash. The P&L is a decision-making tool, and pairing it with financial strategy conversations turns those numbers into an actual plan for what to do next.