Free Cash Flow Yield: Valuing a Company by Its Cash, Not Its Accounting Profit
Earnings are an opinion; cash is a fact. Free cash flow yield asks the plainest question in valuation, how much real cash a business throws off for every dollar you pay. Here is how to compute it, and where it misleads.
A company's earnings are, in the end, an accountant's considered opinion. Its free cash flow is closer to a bank statement. The two can disagree for years, and when they do, the cash almost always turns out to be the one telling the truth.
What free cash flow actually is
Free cash flow is operating cash flow minus capital expenditure. You start from net income, drag it back to cash (add depreciation and amortization, subtract the growth in working capital), then take out the money actually spent keeping the assets running and growing, the capex. What is left is discretionary: enough to pay a dividend, buy back shares, retire debt, or fund an acquisition without asking shareholders for another dollar.
That last property is what makes the number valuable. Accounting profit exists on paper; free cash flow exists in the bank.
From free cash flow to a yield
There are two ways to turn that flow into a valuation ratio.
- Equity FCF yield: FCF ÷ market capitalization. Its inverse is the price-to-free-cash-flow multiple (P/FCF). It compares directly to a dividend yield or an earnings yield.
- FCF over enterprise value: FCF ÷ (market cap + net debt). Cleaner for comparing companies with different debt loads, the very reason EV/EBIT is preferred to the plain P/E.
Either way the reading is the same: the higher the yield, the less you pay for each dollar of real cash.
A worked example
Take two companies with identical reported profit but very different cash.
| Company A | Company B | |
|---|---|---|
| Net income | 100 | 100 |
| + Depreciation & amortization | 40 | 40 |
| − Increase in working capital | 10 | 60 |
| Operating cash flow | 130 | 80 |
| − Capital expenditure (capex) | 30 | 70 |
| Free cash flow | 100 | 10 |
| Market cap | 1,000 | 1,000 |
| FCF yield | 10% | 1% |
| P/E (price ÷ net income) | 10x | 10x |
Illustrative figures.
Same P/E, same reported earnings, and yet A turns profit into cash while B does not. B's earnings are eaten by a hungry working-capital cycle and heavy capex. On the earnings multiple the two are twins; on cash they live on different planets. That gap is exactly what free cash flow yield is built to reveal.
Owner earnings, Buffett's refinement
Buffett proposed a more demanding version, owner earnings: net income, plus depreciation and amortization, minus the maintenance capex required to hold competitive position. The whole subtlety lies in separating maintenance capex from growth capex. A company investing heavily to grow shows a low free cash flow today that understates the cash the business could produce if it stopped growing. Reported capex lumps the two together; pulling them apart is judgment, not arithmetic, which is why owner earnings is a concept and not a screen.
The blind spots
1. Lumpy capital expenditure
A single year's capex can be a new factory or a quiet year of maintenance. One year's free cash flow can therefore swing violently for reasons that say nothing about the business. Average capex over a cycle, or free cash flow flatters and lies by turns.
2. Working capital that reverses
A one-off release of working capital, running down inventory or stretching payables, inflates a single year's cash. It is real cash, but it does not repeat, and it can even signal a business that is shrinking.
3. The growth penalty
A company reinvesting every dollar into high-return projects will show a low FCF yield and may be the better investment, not the worse. Free cash flow yield rewards the harvest and penalizes the planting. Read it alongside return on capital: heavy capex at high returns is a good story; heavy capex at low returns is a warning.
4. Financials do not fit
Banks and insurers have no meaningful capex line; the concept collapses, the same exclusion the Magic Formula makes. The ratio is a tool for industrial and commercial businesses, not for financial balance sheets.
| What FCF yield sees | What it misses |
|---|---|
| The cash actually generated | Whether that cash is steady |
| The price paid for that cash | The maintenance-versus-growth capex split |
| The ability to self-fund | The quality of the assets it funds |
Where it fits with the rest
Free cash flow yield is the cash-flow cousin of the earnings yield. Earnings yield asks how cheap the accounting profit is; FCF yield asks how cheap the cash is. A stock cheap on both, with return on capital to show the cash is well-earned and a moat to suggest it lasts, is exactly what value investing was built to find. Free cash flow is also the ultimate test behind a margin of safety: a business drowning in cash can survive the bad year that sinks one living hand to mouth.
Where it meets what we do
Cash generation is a direct component of Health: a company that consistently converts profit into free cash sits high on that reading, and the ability to self-fund is precisely what carries a business through the strain Health measures. Upside asks the separate question of whether the stock is cheap against that cash, and the two are never folded into one, so a cash machine already fully priced shows its lack of upside plainly rather than hiding behind a strong balance sheet. The rule that sorts is set out on the method page and rebuilt every trading day in the ranking; the free stock screener lets you sort the universe yourself.
Earnings can be shaped, deferred, and dressed. Free cash flow is what is left when the dressing comes off. It is not a perfect number, no single ratio is, but it is the one that asks the least of your trust.
This article is information and education. It is not personalized investment advice. Investing carries a risk of capital loss.
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