The price-to-free-cash-flow ratio measures what the market pays for each dollar of free cash flow — the cash a business has left after covering its operating costs and the capital spending needed to keep going. A P/FCF of 20 means $20 of market value for every $1 of genuinely spare cash a year.
It answers the same question as the P/E ratio, with a denominator that is much harder to shape. Earnings are an accounting opinion: depreciation schedules, revenue recognition and provisions all move them without cash changing hands. Free cash flow is closer to a bank statement, which is why it is the number a buyer of the whole business would care about.
Its reciprocal is the free cash flow yield — a P/FCF of 20 is a yield of 5% — which is often the easier way to hold it in mind, because it puts the company on the same scale as a bond.
A company with a market capitalisation of $4bn that generated $500m of operating cash flow and spent $300m on capital expenditure:
On operating cash flow alone the same company trades at 8 times. The gap between 8 and 20 is what capital spending costs the owners — and on a capital-hungry business that gap is the most important thing on the page.
Read it against the company’s own history rather than against a fixed threshold. Capital spending comes in waves, so a single year of factory-building makes a good business look expensive on this multiple and a year of under-investment makes a deteriorating one look cheap; a median over several years is the honest comparison.
Compare it with P/E deliberately. Where free cash flow persistently runs below reported earnings, the profits are not converting into cash, and that is a question about the accounts rather than about the valuation.
In the app, Free cash flow is one of the seven lenses on the Fair Value tab, and an exit P/FCF multiple is one of the two ways Advanced DCF can build its terminal value.
It matters most for capital-intensive businesses, where the difference between profit and spare cash is the whole story, and for mature companies whose case rests on returning cash to shareholders — a dividend and a buyback are paid out of free cash flow, not out of earnings.
The denominator is lumpy: one large acquisition of equipment, one working-capital swing or one legal settlement can halve it for a year and make the multiple meaningless. It is negative, and therefore unreadable, for any company investing ahead of its returns. It also ignores debt, since it uses market capitalisation rather than enterprise value, and definitions of capital expenditure differ enough that two data sources can disagree about the same company.