Net Income

Net income is the profit a company has left after subtracting all of its expenses, including cost of sales, operating costs, interest and taxes, from its revenue for a period. Often called the "bottom line" because it is the last line of the income statement, it is the single figure most used to judge whether a business made or lost money. When expenses exceed revenue the result is a net loss.

US GAAP uses the term net income; IFRS calls the same figure "profit or loss for the period". Net income belongs to the shareholders: it can be paid out as a dividend or kept in the business as retained earnings on the balance sheet. In personal finance the phrase is used more loosely to mean take-home pay after tax and deductions, the starting point of a household budget.

Imagine a taxi driver's week. The fares collected are the revenue. Out of that come fuel, the car's lease, insurance, the phone bill, the loan on the car and finally the tax due. Whatever remains is what the driver actually earned: the net income. A busy week with high fuel prices can produce less net income than a quieter week with cheap fuel.

That is why net income matters more than sales. A shop can sell a great deal and still lose money if its costs grow faster than its takings. Net income answers the plain question an owner asks at the end of the year: after paying everyone, what is left for me?

The standard calculation is:

• $R$ is revenue (sales) for the period.
• $C$ is cost of goods sold, the direct cost of what was sold.
• $O$ is operating expenses, including salaries, rent and depreciation.
• $I$ is net interest expense on borrowings, plus any other non-operating gains or losses.
• $T$ is income tax expense.

Take a company with $1,000,000 of revenue, $600,000 cost of goods sold, $250,000 operating expenses, $30,000 interest and a 25% tax rate. Profit before tax is $1{,}000{,}000 - 600{,}000 - 250{,}000 - 30{,}000 = 120{,}000$. Tax is $0.25 \times 120{,}000 = 30{,}000$. Net income is therefore $90,000, a net margin of 9% of revenue.

Along the way the statement shows intermediate figures: gross profit ($400,000), operating profit ($150,000) and profit before tax ($120,000). Analysts often add back interest, tax, depreciation and amortization to reach EBITDA, which strips out financing and accounting choices but is not a measure under either set of standards.

Net income feeds several widely quoted ratios and decisions:

• Earnings per share. Net income attributable to ordinary shareholders, divided by the weighted number of shares, gives earnings per share (EPS), which in turn drives the price-to-earnings ratio.
• Return measures. Return on equity divides net income by shareholders' equity; return on assets divides it by total assets.
• Payout decisions. Boards decide how much to distribute to each shareholder and how much to reinvest.
• Lending. Banks look at net income and its stability when assessing credit risk, although they lean more on cash generation.

For banks themselves, net income depends heavily on the spread between interest earned and paid, captured by net interest margin.

Net income is an accounting result, prepared on an accrual accounting basis, so it does not equal the cash a business generated. Sales on credit count as revenue before customers pay, under the rules of revenue recognition, and depreciation reduces net income without any cash leaving. The statement of cash flows reconciles the two: under the indirect method it starts from net income and adjusts for non-cash items and changes in working capital to arrive at cash from operations. A company can report steady net income while running short of cash flow, a pattern lenders watch closely.

Both IFRS and US GAAP require net income (or profit or loss) to be shown, but they allow different layouts and permit some items to bypass it through other comprehensive income, such as certain revaluation and currency translation gains. IFRS 18, issued by the IASB in April 2024 and effective for annual periods beginning on or after 1 January 2027, replaces IAS 1 and requires new subtotals, including operating profit, to make income statements more comparable. All of these sit within the wider set of financial statements.

Net income has known weaknesses. It depends on estimates (useful lives, bad-debt allowances, provisions), can be lifted by one-off gains such as an asset sale, and can be managed by shifting the timing of revenue and expenses. Investors therefore read it together with cash flow, the notes to the accounts and any "adjusted" figures, which companies define themselves and which are not audited to the same standard.

• IFRS Foundation: IFRS 18 Presentation and Disclosure in Financial Statements