The formula
How to calculate free cash flow yield
Free cash flow yield is the cash a business throws off as a percentage of what the market charges for it. Think of it as the return you would receive if every spare pound were handed to shareholders.
It sits alongside the earnings yield but uses cash rather than accounting profit, which makes it the more conservative of the two. A large gap between the earnings yield and this one is worth investigating.
What to enter:
- Free cash flow
- Market capitalisation
The result updates on every keystroke. The URL updates too, which makes the filled-in version easy to bookmark or send to someone else.
Some of the fields above will accept figures that seem unusual for your own situation, and that is deliberate: the formula behind free cash flow yield works the same way regardless of scale, so the calculator does not stop you testing a hypothetical scenario a long way from your actual numbers — often the fastest way to see which input the result is most sensitive to.
Why free cash flow yield matters
The formula behind free cash flow yield is standard and has not changed in decades; what changes is the situation it gets applied to. Two households can run the identical calculation and land on very different conclusions once their own numbers — income, rate, term, balance — are dropped in, which is why a generic textbook example is less useful than a calculator you can adjust to match your own circumstances.
Beyond a one-off check, the same calculation is worth revisiting whenever the underlying numbers change — a new interest rate, a change in income, a different term. Because the figures live in the page's own web address, coming back to update just one field and compare the new result against the old one takes seconds rather than starting again from a blank page.
It is also worth being clear about what a single figure like this can and cannot settle on its own. It answers the specific question the formula was built to answer, and nothing more — a favourable free cash flow yield result does not automatically mean a decision is a good one overall, since plenty of other factors that a formula cannot capture, from personal circumstances to how comfortable a commitment feels, usually matter just as much as the arithmetic. Use the number as one solid input among several rather than the whole of the decision.
Where the same calculation needs to be run for several different scenarios side by side — three loan offers, two savings plans — the fastest approach is usually to open the calculator in a second browser tab for each one, so that the results can be compared directly rather than overwriting each other in a single set of fields.
Worked example
A concrete run-through, using the values already in the fields:
- Free cash flow: 58,000,000
- Market capitalisation: 950,000,000
That gives:
- Free cash flow yield: 6.11 %
- Price to free cash flow: 16.38 ×
- Years of free cash flow to buy the company: 16.38 years
These figures are only the calculator's own starting values, included so the working is visible rather than hidden inside the tool above. Replace them with your own numbers and the same arithmetic applies — nothing about the method changes, only the inputs feeding it.
Reading the result
Compare it against a risk-free rate. When government bonds yield 4% and a company yields 6% on free cash flow, the market is offering two points for taking equity risk — thin. At 10% either the market has doubts, or the price is genuinely low.
Where this goes wrong. Using market capitalisation while the company carries heavy debt. Enterprise value — market cap plus net debt — is the fairer denominator, because a buyer inherits the borrowings along with the cash flows.
A useful check on any unfamiliar result is to compare it against a rough mental estimate first — round the inputs to convenient numbers and see whether the calculator's answer lands in roughly the same territory. A wildly different figure usually means one of the fields was entered in the wrong unit, most often a percentage typed as a whole number where a decimal was expected, or the reverse.
Above 5% is generally considered attractive for an established business in a normal rate environment, and above 8% is cheap enough to demand an explanation. Both thresholds shift up when interest rates do.
It does not always, but it is harder to manipulate. Earnings depend on accruals and estimates; cash flow depends on bank statements. Where the two disagree persistently, the cash figure is usually the one telling the truth.
It returns free cash flow yield. With 58,000,000 free cash flow and 950,000,000 market capitalisation, that comes to 6.11 %. Change any field and the figure moves with it.
Whenever one of the underlying figures changes — a new interest rate, a different balance, an updated term — since the result only reflects what is currently in the fields. There is no need to keep a separate record of past results; the web address for a filled-in version already carries the figures used to produce it.
Not unless a tax rate or a fee is explicitly one of the inputs above. Where it is not, the figure shown is a gross calculation, and any tax due depends on your personal circumstances and current tax rules, which are worth checking separately.
The arithmetic itself is exact — the calculator applies the formula shown above precisely, with no rounding until the final figure is displayed. The uncertainty, where it exists, is entirely in the inputs: an estimated rate or an approximate balance carries that same approximation through to the result.