The three statements and what each answers
The income statement (profit and loss / P&L) answers: did the company make a profit over a period? It runs from revenue at the top, subtracts costs and expenses, and arrives at net income at the bottom. The balance sheet answers: what does the company own and owe at a specific date? It shows assets on one side, liabilities and equity on the other — and they must balance. The cash flow statement answers: how did cash actually move? It reconciles net income to cash by accounting for non-cash items (depreciation) and working capital changes.
Reading the income statement top-down
Revenue (or turnover) is the total value of sales. Subtract cost of goods sold to get gross profit. Subtract operating expenses (sales, marketing, admin, R&D) to get operating profit (EBIT). Subtract interest on debt and taxes to reach net income. Gross margin (gross profit / revenue) tells you how efficiently the company produces its goods. EBIT margin tells you how efficiently it runs the overall business. Net profit margin tells you how much of every pound of revenue ultimately becomes profit.
What each statement is best at revealing
The income statement can be manipulated through accounting choices (revenue recognition timing, depreciation policies). The cash flow statement is harder to manipulate — cash either moved or it didn’t. This is why analysts often focus on free cash flow (operating cash flow minus capital expenditure) as the most reliable indicator of a company’s financial health. A company can show accounting profit while burning through cash, a warning sign of aggressive revenue recognition or deferred cost recognition.
“Revenue is vanity, profit is sanity, cash is king.”
What this means for you
If you invest in individual stocks, reading the annual report is non-negotiable. Focus first on the trend in revenues (growing or declining?), gross margins (stable or being squeezed?), and free cash flow (is the profit real and being converted to cash?). Cross-reference the balance sheet for debt levels relative to earnings (net debt / EBITDA) and check the cash flow statement for large items that might not show up in net income. Most retail investors skip this work entirely — which is exactly why markets are as efficient as they are.