Net Income
Net income is the profit remaining after subtracting every cost from revenue: production, operating expenses, interest, and taxes. It is the bottom line of the income statement, the number behind earnings per share, and the most quoted figure in finance.
The math
2 billion dollars of revenue, 1.85 billion of total costs, interest, and taxes: 150 million of net income, a 7.5 percent net margin. Divide by shares outstanding and you get EPS; multiply the market’s mood by that EPS and you get the stock price.
The entire valuation chain hangs on this one line, which is exactly why it deserves suspicion.
The bottom line of the income statement.
The trap
Reading net income as money earned. It is an accounting construction: depreciation schedules, provisions, one-off gains from selling a division, revaluations, and tax items all flow through it.
A company can report record net income the same year its cash reserves shrink. The single most useful habit in fundamental analysis is comparing net income to free cash flow over several years: when profit persistently outruns cash, the earnings quality question needs an answer before your money moves.
The move
Strip the line down before trusting it: remove one-off items to see the repeatable core, check the tax rate for temporary favors, and compare growth in net income with growth in revenue. Profit growing while sales stagnate has a source, usually cost cuts or buybacks, and every source has an expiry date.