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Tutorial 02 of 10 · Fundamental Analysis Series

How to Read a Company's Income Statement Like a Pro

The income statement tells you if a company is actually making money — and more importantly, whether that profit is real, growing, and sustainable.

14 min Beginner–Intermediate

What is an Income Statement?

The income statement — also called the profit and loss statement (P&L) or statement of operations — reports a company's financial performance over a specific period (a quarter or a year). It answers one fundamental question: did this business make or lose money?

According to the International Accounting Standards Board (IAS 1), all public companies must present an income statement as part of their complete financial statements. In Saudi Arabia, TASI-listed companies follow Saudi Organization for Chartered and Professional Accountants (SOCPA) standards aligned with IFRS.

You can find income statements for any U.S. company on SEC EDGAR, and for TASI companies on the Saudi Exchange (Tadawul) investor relations portal.

The Structure: Line by Line

A simplified income statement for a hypothetical company looks like this:

ABC Company — Income Statement (Annual, SAR millions)
Revenue (Net Sales)12,500
Cost of Goods Sold (COGS)(7,200)
Gross Profit5,300
Operating Expenses (SG&A)(1,800)
Research & Development(420)
Depreciation & Amortization(310)
Operating Income (EBIT)2,770
Interest Expense(180)
Other Income55
Pre-Tax Income (EBT)2,645
Income Tax (Zakat)(396)
Net Income2,249

Revenue

The top line. Revenue represents total sales before any costs are deducted. Always check if revenue is growing year-over-year. Investopedia's revenue guide explains the difference between gross revenue and net revenue (after returns and discounts).

Cost of Goods Sold (COGS)

Direct costs of producing whatever the company sells — raw materials, labor, manufacturing. Lower COGS relative to revenue means higher margins. The AccountingCoach explanation of COGS is excellent for beginners.

Gross Profit & Gross Margin

Gross Profit = Revenue − COGS. Gross Margin = Gross Profit ÷ Revenue. A software company might have 70%+ gross margins; a retailer might have 25%. You must compare within the same industry. Damodaran's industry margin database provides sector-level benchmarks.

Operating Expenses & EBIT

Operating expenses (SG&A, R&D) are subtracted from gross profit to arrive at EBIT — Earnings Before Interest and Taxes, also called operating income. This is the profit from core business operations. Investopedia's EBIT explainer covers this in depth.

Net Income

The "bottom line." Net income is what's left after every cost including taxes. This feeds into EPS (Earnings Per Share), the most-cited profitability metric in equity research. Learn how EPS is calculated here.

Key Metrics to Extract

MetricFormulaWhat It Tells You
Gross MarginGross Profit ÷ RevenuePricing power and production efficiency
Operating MarginEBIT ÷ RevenueCore business profitability
Net MarginNet Income ÷ RevenueOverall bottom-line efficiency
EPSNet Income ÷ Shares OutstandingProfit attributable to each share
Revenue Growth(This Year − Last Year) ÷ Last YearBusiness momentum
EBITDAEBIT + D&ACash earnings proxy; used in valuation multiples

Understanding Profit Margins

Margins are the lens through which you compare profitability across companies of different sizes. A company with SAR 1 billion in revenue and 30% net margin is more profitable than one with SAR 5 billion in revenue and 3% net margin.

The Morningstar Stock Research platform tracks 10-year margin histories for thousands of companies. Professor Damodaran's free dataset lists average margins by industry globally — bookmark it.

Rule of Thumb

Look for companies where operating margins are stable or expanding over 3–5 years. Shrinking margins signal pricing pressure, rising competition, or cost control problems — all red flags.

Red Flags in the Income Statement

Revenue growing but profits shrinking: The company may be buying market share at unsustainable cost. Watch for this in fast-growing tech companies.

One-time gains inflating net income: Asset sales, insurance settlements, or tax credits can boost net income without underlying business improvement. Always look at operating income, not just net income. The Wall Street Prep guide on non-recurring items explains how to strip these out.

High receivables growth relative to revenue: If accounts receivable grow faster than revenue, the company may be recognizing revenue it hasn't actually collected yet. This is a classic sign of aggressive accounting, covered in detail by Howard Schilit's Financial Shenanigans.

Consistently negative operating income: A company burning through operating income year after year without a credible path to profitability is a capital destruction machine — regardless of what the revenue chart looks like.

How to Find Real Income Statements

For TASI companies: visit the Saudi Exchange (Tadawul), search for a company, and navigate to "Financial Statements" under Investor Relations.

For S&P 500 companies: SEC EDGAR has every 10-K and 10-Q free. Alternatively, Yahoo Finance and Macrotrends offer decade-long income statement histories with visualization.

For Japanese (JPX) companies: use the Japan FSA EDINET disclosure system. Most large-cap JPX companies also publish English investor relations pages.

Sources & Further Reading