Earnings are an opinion; cash is a fact. Free cash flow is the money a business actually has left after paying to keep itself running — and it’s a good deal harder to massage than the profit line everyone quotes.
What free cash flow is
Free cash flow (FCF) is the cash a company generates from its operations minus the capital spending needed to maintain and grow the business — new equipment, stores, data centres. What’s left is genuinely free: cash the company can use to pay dividends, buy back shares, pay down debt, or bank for later. It’s the cash a business throws off once the bills, including the cost of staying competitive, are paid.
“Revenue is vanity, profit is sanity, cash flow is reality”
The old market maxim sums it up in three levels of truth. Revenue — the top line — is the easiest to grow and the easiest to flatter: sales can climb while the business quietly loses money on each one. Profit is more honest, but it’s still an accounting figure, shaped by non-cash charges like depreciation and by choices about when to book revenue and costs. Cash flow is the reality check — the money that actually moved. A company can post rising revenue and healthy profits while its free cash flow stalls, and that gap is usually where the real story hides. It’s why cash is so much harder to dress up than either line above it.
Profit is what the accounts say the company earned. Free cash flow is what it actually kept. When they disagree, trust the cash.
FCF yield: valuing on cash
To turn FCF into a valuation gauge, compare it to what the company costs: FCF yield is free cash flow as a percent of market cap. A 5% FCF yield means the business throws off cash equal to 5% of its price each year — the mirror image of paying 20× free cash flow. It’s an intuitive way to judge how much you’re paying for real cash generation, and it’s directly comparable across companies (and even, loosely, against a bond yield).
What to watch
Negative FCF isn’t always bad. A young company investing heavily to grow can burn cash by choice; the question is whether that spending earns a return. For a mature business, though, persistently negative or shrinking FCF is a warning. Watch capital intensity — airlines, telecoms and manufacturers must plough cash back in just to stand still, so their FCF runs lighter than an asset-light software firm’s. And check for one-offs: a single year can swing on the timing of a big project or a working-capital move, so read FCF as a trend, not a single snapshot.
Apple converts its sales into roughly $108 billion of actual cash a year after capital spending — the cash that funds its dividends and buybacks. A 2.4% FCF yield means you’re paying about 42× that cash flow: not cheap, but the premium a durable cash machine tends to command. A slower, debt-heavier name like Verizon trades nearer a 9% FCF yield — cheaper on cash, for reasons worth understanding.
Educational commentary — not adviceFree cash flow and FCF yield are computed from the reported cash-flow figures and market cap; the read only puts them in plain terms — the cash the business throws off, and the return that represents against its price. (Example reading — a point-in-time snapshot, not current data.)
Takeaways
- Free cash flow = operating cash flow minus capital spending — the cash a business truly has left.
- It can differ from earnings — cash is harder to massage than accounting profit.
- FCF yield (FCF ÷ market cap) shows how much real cash you’re buying for the price.
- Negative FCF can be growth or trouble — read it against the business and as a trend.
See the cash behind the earnings
Pull up any company and get free cash flow and FCF yield alongside the margins and valuation multiples, with a plain-language read of what the cash picture is telling you.
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