Free Cash Flow: What It Is and Why It Matters

The free cash flow formula

The standard formula:

Free cash flow = operating cash flow − capital expenditures

• Operating cash flow (OCF, "net cash provided by operating activities") is the cash the core business generated during the period, after taxes, interest in most US filings, and changes in working capital.
• Capital expenditures (capex, "purchases of property and equipment") is what the company spent on long-lived assets: plants, servers, stores, vehicles.

Both numbers come from the cash flow statement, the third core financial statement after the income statement and the balance sheet. Some analysts also subtract lease payments or capitalized software costs; there's no single official definition, since FCF isn't a GAAP measure.

A real example: AMD

AMD's second quarter of 2026 ($ millions):

Here FCF is lower than net income. Part of the reason is that net income included a $483M gain on long-term investments that didn't bring in any cash; the rest comes from capex and working capital, which hit cash and profit at different times. See the full AMD breakdown.

Free cash flow vs. net income

The two numbers diverge for predictable reasons:

• Depreciation and amortization reduce net income but don't use cash (the cash left when the asset was bought).
• Capex uses cash but hits net income only gradually, through depreciation.
• Stock-based compensation reduces net income but not cash — it's paid in shares.
• Working capital — inventory, receivables, payables — moves cash without touching profit.
• Non-cash gains and losses — investment revaluations, impairments, derivative marks — move profit without touching cash.

Sometimes FCF lands below net income even at a very profitable company. AppLovin reported $1,267M of net income and $863M of free cash flow in Q2 2026. One visible reason is cash taxes catching up with book taxes: the company paid $640M in taxes in the first half of 2026, versus $101M a year earlier. Even so, its FCF equals roughly 45% of revenue, an extraordinary level, and it used $551M to buy back shares in the quarter. See the AppLovin breakdown.

And sometimes FCF is negative while net income is positive. That's common for companies in a heavy build-out phase, or for fast-growing businesses whose cash gets tied up in inventory and receivables.

Why free cash flow matters

It funds everything shareholders care about. Dividends, buybacks and debt repayment all come out of free cash flow. A dividend that consistently exceeds FCF is being paid from the balance sheet or borrowed money, and that can't last forever.

It's harder to manipulate. Accounting choices — depreciation schedules, revenue recognition timing, what counts as "one-time" — can shift net income a lot. Cash in the bank is harder to fake, although companies can still flatter one quarter's FCF by delaying payments to suppliers or cutting capex.

It catches what EBITDA misses. EBITDA ignores capex entirely. For capital-intensive companies, that can make a business that barely generates cash look very profitable. FCF subtracts the capex bill. More on that in What Is EBITDA?.

FCF margin and FCF yield

Two ratios make free cash flow comparable across companies:

• FCF margin = free cash flow ÷ revenue. It shows how much of each sales dollar turns into spendable cash. AMD's was about 14% in Q2 2026; AppLovin's about 45%.
• FCF yield = free cash flow over the last twelve months ÷ market capitalization. It works like an earnings yield, but for cash. With made-up numbers: a company worth $100 billion that generates $5 billion of annual free cash flow has an FCF yield of 5%.

FCF yield is useful for comparing with dividend yields and bond yields. If a company's FCF yield is 5% and its dividend yield is 4%, the dividend is covered with a modest cushion. If the dividend yield is higher than the FCF yield, the company is paying out more than it generates. To see what a dividend means for your own holding — income after tax and growth with reinvestment — use the dividend calculator.

The calculator below starts from the same made-up example, split into $8 billion of operating cash flow and $3 billion of capex. Replace them with twelve months of figures from a real cash flow statement.

Is negative free cash flow bad?

Not necessarily. The question is why it's negative.

• Growth investment. A company building new factories or data centers may burn cash for years before the assets pay off. That can be a great decision or a terrible one; FCF alone won't tell you which.
• Weak operations. If operating cash flow itself is shrinking while capex is just maintenance, that's a red flag.
• Working capital swings. A one-quarter drop because of an inventory build often reverses the next quarter.

Look at FCF over several quarters, and read management's explanation of capex plans in the earnings release.

Where to find it in an earnings report

Many companies report free cash flow directly in their press release, often in a table titled "Reconciliation of GAAP to non-GAAP measures." If they don't, you can calculate it from the cash flow statement:

1. Find "Net cash provided by operating activities."
2. Find "Purchases of property and equipment" (and sometimes "capitalized software") in the investing section.
3. Subtract the second from the first.

For how cash flow fits into the rest of the report, read How to Read an Earnings Report in 5 Minutes, and for the income statement side, Revenue vs. Net Income.

How this guide was made: the draft was written with the help of our model (AI); facts and figures were checked against primary sources (listed above). How we make it