What free cash flow is
Free cash flow is the cash a business produced from operations after paying for the capital investment needed to keep running. It is discretionary money: available for dividends, buybacks, debt repayment, acquisitions, or simply accumulating on the balance sheet.
Both inputs come straight from the cash flow statement in any 10-K or 10-Q. Operating cash flow appears as the subtotal of the first section, and capital expenditures appear in the investing section, usually labeled purchases of property, plant and equipment.
Computing it from a filing
Apple's fiscal 2024 cash flow statement, as filed with the SEC, makes the arithmetic concrete.
| Line | FY2024 | Where to find it |
|---|---|---|
| Operating cash flow | $118,254 | Cash flow statement, operating section |
| Capital expenditures | $9,447 | Investing section, purchases of PP&E |
| Free cash flow | $108,807 | The subtraction |
| Net income, for comparison | $93,736 | Income statement |
Apple converted $391.0 billion of revenue into $108.8 billion of free cash flow, a free cash flow margin of 27.8%. It also generated meaningfully more cash than accounting profit, $108.8 billion against $93.7 billion, which is the pattern of a business with modest capital needs and large non-cash charges.
Why it differs from earnings
Net income and free cash flow start from the same business and diverge for structural reasons, not sinister ones.
Depreciation is subtracted from profit but is not cash. A factory bought years ago reduces earnings annually through depreciation while no money leaves the company. This pushes cash flow above earnings.
Capital expenditure is cash but not an expense. Buying that factory consumes cash immediately and reduces earnings only gradually. This pushes cash flow below earnings, which is why capital-heavy businesses show weak free cash flow during expansion.
Working capital moves cash without touching profit. A sale booked as revenue but not yet collected raises earnings while cash sits in receivables.
Stock-based compensation is added back. It reduces earnings but consumes no cash, so it raises free cash flow. This is a genuine weakness of the measure, since the cost is real and paid in dilution rather than dollars.
Judging the number
The absolute figure means little without context. Three comparisons give it meaning.
Free cash flow margin divides it by revenue, showing how much of each sales dollar becomes discretionary cash. Apple's 27.8% is exceptional; a healthy software company often exceeds 20%, while retailers and airlines operate in the low single digits.
Conversion from net incomecompares the two directly. A ratio consistently above 1.0 suggests earnings are conservative and cash generation is real. Persistent readings well below 1.0 mean reported profits are not turning into money, which deserves investigation.
Free cash flow yield divides free cash flow by market capitalization, giving the cash return on what you would pay for the whole company. It functions as an inverted, cash-based cousin of the P/E ratio, and many investors find it more trustworthy for exactly that reason.
Our company research pages chart free cash flow against stock-based compensation across a company's full filing history, which puts both halves of this analysis on one screen.
Where it misleads
Capital expenditure is lumpy. A single year of heavy investment can crush free cash flow at a thriving company. Average three to five years before drawing conclusions, and read management's commentary about the spending.
Cuts can be self-harming. Management can raise free cash flow simply by deferring maintenance and delaying payments to suppliers. Both improve the number this year and damage the business later, which is why a sudden improvement deserves as much scrutiny as a sudden decline.
Acquisitions are excluded. Standard free cash flow subtracts capital expenditures but not acquisitions. A company that grows exclusively by buying other companies can report attractive free cash flow while consuming enormous amounts of capital.