How to read an income statement (P&L) for stocks

The structure of an income statement

An Indian listed company's income statement (Profit and Loss statement) flows from the top line (Revenue from Operations) downward through successive cost deductions to the bottom line (Profit After Tax or PAT). The key line items are: Revenue from Operations, Other Income, Cost of Materials Consumed, Employee Benefit Expenses, Other Expenses, Depreciation and Amortisation, Finance Costs (interest), and finally Profit After Tax.

The statement reveals how much of every rupee earned survives after covering each category of costs. Gross profit (revenue minus cost of goods sold or materials consumed) tells you the basic economics of the product. EBITDA tells you the operating cash-generating power. PAT is what actually belongs to shareholders after all costs including taxes.

Gross profit and gross margin

Gross profit equals Revenue from Operations minus Cost of Materials Consumed and changes in inventory. Gross margin (gross profit divided by revenue) measures how much the company earns before operating expenses. A jewellery retailer might have a 15 percent gross margin (thin, because gold is the dominant cost). A software company might have a 70 to 80 percent gross margin (high, because code has near-zero marginal cost to replicate).

Comparing gross margins within the same industry tells you which company has stronger pricing power or better procurement efficiency. A rising gross margin over time signals that the company is gaining pricing power or reducing input costs. A falling gross margin often signals input cost inflation or competitive pressure on selling prices.

EBITDA: the operating engine

EBITDA (Earnings Before Interest, Tax, Depreciation, and Amortisation) is the most widely used measure of operational profitability. It strips out capital structure (interest), accounting choices (depreciation policy), and taxes to give a cleaner view of how efficiently the core business earns. EBITDA margin (EBITDA divided by revenue) is comparable across companies in the same industry with different debt levels or depreciation policies.

However, EBITDA is not cash flow. A company with high receivables can show great EBITDA while struggling for cash. Always check the cash flow statement alongside the income statement. EBITDA is also before depreciation, which is a real economic cost of using up fixed assets -- capital-intensive businesses (steel plants, telecom towers) have large depreciation that EBITDA ignores.

From EBIT to PAT: debt and taxes

After EBITDA, subtracting Depreciation gives EBIT (operating profit). Subtracting Finance Costs (interest on loans) gives PBT (profit before tax). Subtracting tax expense gives PAT (profit after tax) -- what ultimately belongs to equity shareholders.

A company with high debt will see a large gap between EBIT and PAT because interest charges consume a significant portion of operating profit. This is why two companies with identical EBIT margins can have very different PAT margins if their capital structures differ. Tracking the EBIT-to-PAT conversion ratio helps assess the leverage risk embedded in reported earnings. Exceptional and extraordinary items in a given period can inflate or depress reported PAT -- always strip these out when comparing normalised earnings across periods.

FAQ2 reader questions · AEO-eligible

Common questions on how to read an income statement.

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