The income statement is the first report an analyst opens: it says how much the company earns and what it gets to keep. It reads top down, and every line has its meaning. This article covers the second area of the Stock Analyst certification.
Top down: from revenue to gross profit
The top line of the income statement is revenue - the total value of goods and services sold in the period. Revenue is not profit: costs are only then subtracted from it.
The first deduction is COGS (cost of goods sold) - the direct costs of producing or procuring the goods sold. What remains is gross profit, and its share of revenue is the gross margin. Example: a company with $200 million in revenue and $120 million in COGS has a gross profit of $80 million and a gross margin of 40%. The gross margin tells you how expensive the product itself is to make - and how strong the company's pricing position is.
Operating expenses and operating income
Below gross profit come operating expenses (OPEX): wages, rent, marketing, development - everything that keeps the company running day to day but is not directly tied to producing a specific unit. Gross profit minus OPEX gives operating income - the cleanest picture of what the business itself earns before financing and taxes enter the game.
Alongside operating income you will often run into EBITDA: earnings before interest, taxes, depreciation and amortization. It is used for rough comparisons of operating performance across companies, because it filters out the effects of different debt loads, tax rates and accounting depreciation - but it is neither cash nor the final profit belonging to shareholders.
Net income, net margin and EPS
After deducting interest on debt and taxes, what remains is net income - the bottom line of the income statement. Its share of revenue is the net margin: a company with $400 million in revenue and $40 million in net income has a net margin of 10%.
Net income divided by the share count gives EPS (earnings per share). A company with $500 million in net income and 100 million shares has an EPS of $5. EPS is the basic building block of valuation - P/E is computed from it, and earnings estimates also feed the fair value of a stock.
Profit is not cash
The income statement is kept on an accrual basis: a sale is recorded at the moment it happens, even if the customer has yet to pay the invoice, and costs include items that are not cash movements - typically depreciation. Depreciation works by spreading the purchase cost of long-lived assets - machines, buildings, technology - into expenses gradually over the years of their use, rather than all at once; the money itself flowed out back when the asset was bought. That is why net income routinely differs from how much money actually landed in the company's accounts. A profitable company with slow-paying customers can run short of cash.
Likewise, a loss means one thing only: costs for the period exceeded revenues. It does not automatically mean the company has run out of money or is heading for bankruptcy - that depends on cash and on whether the loss is an exception or the rule.
Dynamics: growth, one-offs and guidance
An analyst cares about the trend over time. Year-over-year revenue growth is computed against the original value: going from 200 to 250 million means 25% growth. The comparison is made with the same quarter a year ago, not the previous quarter - many businesses are seasonal (Christmas sales, summer travel), so comparing adjacent quarters would mostly measure the season, not real performance. But growing revenue does not guarantee growing profit - when costs grow faster than revenue, profit falls even during record sales.
Watch out for one-off items: selling a division or an extraordinary write-down can inflate or crush profit in a single quarter without saying anything about ordinary performance. To estimate the future, you need to filter them out.
Companies often attach guidance to their results - management's own outlook for revenue or profit in the next period. It is a non-binding estimate, not a promise; yet it often moves the stock price more than the past numbers themselves, because the market prices the future.
Test yourself
The income statement is the second of the six areas of the Stock Analyst certification exam. Bulios Black members can verify their understanding in the Bulios certification - and have proof of their knowledge right on their profile.