Free Cash Flow: The Cash a Company Really Frees Up
Net income is the most quoted line of an income statement, but it is not the line that pays dividends, repays debt or funds share buybacks. For that, a company needs actual cash. That is what free cash flow (FCF) measures: the cash left once day-to-day operations and investments have been paid for. This article explains what it represents, how to calculate it, why it usefully complements accounting profit, and when it can be misleading too.
Free Cash Flow: What Are We Talking About?
Free cash flow is the money left over after a company has financed its operations and maintained or expanded its productive assets. It is cash that is potentially distributable: it can pay dividends, buy back shares, reduce debt or fund acquisitions.
You find it in the cash flow statement, one of a company's 3 core financial statements alongside the income statement and the balance sheet. To refresh how these documents fit together, the lesson Reading financial statements covers their structure.
How to Calculate Free Cash Flow
The most common formula is:
Free cash flow = Operating cash flow − Capital expenditure (capex)
- Operating cash flow starts from net income, adds back non-cash charges (depreciation, for instance) and adjusts for changes in working capital (inventory, receivables, payables).
- Capex covers spending on machinery, buildings, internally developed software and equipment: anything that maintains or expands production capacity.
Several variants exist (before or after debt service, for example). What matters is to compare FCF figures calculated the same way.
Worked Example: Two Companies, the Same Profit
This example is purely illustrative, with two fictional companies, Alpha and Beta, reporting the same net income.
| In € million (illustrative values) | Alpha | Beta |
|---|---|---|
| Net income | 100 | 100 |
| Depreciation (non-cash charge) | 30 | 30 |
| Change in working capital | − 5 | − 45 |
| Operating cash flow | 125 | 85 |
| Capital expenditure (capex) | − 40 | − 70 |
| Free cash flow | 85 | 15 |
Profit is identical, yet Alpha frees up € 85 million of cash against € 15 million for Beta, whose customers pay slowly, whose inventory is growing and whose factories require heavy investment. The income statement shows none of this; the cash flow statement does.
A simple way to compare such profiles is cash conversion: FCF divided by net income. Here, 85 % for Alpha and 15 % for Beta. A persistently low conversion deserves an explanation.
Why Free Cash Flow Matters as Much as Profit
Net income follows accounting rules that leave room for judgment: how depreciation is spread, provisions, when revenue is recognised. Cash is harder to dress up: it either reached the bank account or it did not.
Free cash flow therefore sheds light on several things:
- Dividend capacity. A company paying out more than its FCF has to draw on its cash reserves or borrow. That cannot go on forever.
- Debt resilience. Steady FCF allows debt to be repaid without weakening the business.
- Earnings quality. Rising net income with stagnant or falling FCF is a warning sign worth examining.
- Valuation. Discounted cash flow (DCF) models are built on future cash flows. The lessons Free cash flow, the heart of the matter and Valuing a stock go further.
FCF is often compared with market capitalisation to obtain a free cash flow yield (FCF per share divided by the share price), which can be set against competitors or the stock's own history, like a P/E ratio. Our article on the P/E ratio shows how to handle this kind of ratio in relative terms.
The Limits of Free Cash Flow
FCF is not an oracle. A few traps are worth knowing.
- High FCF is not always good news. A company can inflate FCF for a year by postponing necessary investment or delaying supplier payments. The gain is temporary and the bill comes later.
- Low FCF is not always bad news. A fast-growing company investing heavily may show weak or even negative FCF while building capacity that will produce cash tomorrow. Everything depends on the return on those investments.
- It is volatile. A large advance payment, an inventory swing or an exceptional investment can make the figure jump or drop from one year to the next. An average over 3 to 5 years is more reliable.
- Definitions vary. The line between maintenance capex and growth capex is subjective.
- It depends on the sector. A software publisher and an airline do not have the same capital intensity.
Finally, FCF says nothing about the share price: a company can generate plenty of cash and already be valued accordingly.
Putting It to Use
Look at FCF over several years, compare it with net income, set it against dividends paid and place it among sector peers. In Earnnest, a stock page brings these elements together in the Valuation tab, with a descriptive verdict (bullish, neutral or bearish). For a broader method, read Analysing a stock; for the portfolio side, try the PEA diversification score tool (the PEA is a French equity savings plan).
Key Takeaways
- Free cash flow is the cash left after operations and investment: operating cash flow minus capex.
- It complements accounting profit by showing what is actually collected, and reveals earnings quality.
- Two companies with the same profit can have very different FCF, as the illustrative example shows.
- Read it over several years, in relative terms and in context: sector, growth phase, investment policy.
- It says nothing about the price of the stock: it has to be set against valuation.
This article is for information and education only; it is not personalised investment advice. Figures in the examples are fictional. Past performance does not predict future performance.