Free Cash Flow (FCF)
The cash you can actually keep - operating cash flow minus capex, the read EBITDA's add-backs can't flatter.
- Term
- Free Cash Flow (FCF)
- Is
- Operating cash flow − capital expenditure
- Measures
- Cash the business can actually keep/return
- Beats EBITDA on
- Truth about cash, because it subtracts capex
Forms & parts of speech
Definition in plain terms
Free cash flow is the cash a business produces from its operations after paying for the capital expenditure (capex) it needs to maintain and grow - calculated as operating cash flow minus capex.
It is the cash that is genuinely "free" - available to pay down debt, return to shareholders, or reinvest - and it is the truest measure of cash generation, because unlike EBITDA it actually subtracts the capital the business consumes.
Where EBITDA adds back depreciation and amortization (and so ignores the real cash spent on assets), free cash flow faces that spending directly.
Why it matters to growth leaders
Free cash flow is increasingly the number that matters in the post-2022 efficient-growth era, for good reasons. It cannot be flattered the way EBITDA's add-backs can - it is closer to a fact (the cash actually generated) than a judgment.
It determines real options: a business with positive free cash flow controls its own destiny (it can self-fund growth and isn't dependent on raising more capital), while one burning cash is on a clock.
And the Rule of 40, a key SaaS health benchmark, increasingly uses free-cash-flow margin (not just EBITDA) as the profitability half.
For a growth leader, this reframes the job: efficient, cash-generative growth - not growth that looks profitable on EBITDA but consumes cash beneath it - is what protects the company's independence and valuation.
EBITDA added back the depreciation and amortization on the company's substantial capital spending - but that capex was real, ongoing cash going out the door, and once it was subtracted, the free cash flow the business actually generated was a fraction of the EBITDA figure.
The company had been mistaking an accounting-flattered profit number for cash it could actually keep.
It shifts its discipline to free cash flow as the truer read: it tracks operating cash flow minus capex, judges its profitability and its Rule-of-40 health on free-cash-flow margin, and recognizes that positive free cash flow - not a healthy-looking EBITDA
is what gives it control of its destiny and independence from the next raise. The growth team's mandate sharpens accordingly: drive efficient, genuinely cash-generative growth, not growth that flatters EBITDA while the capex beneath it quietly drains the cash.
and not using free-cash-flow margin (rather than just EBITDA) in the Rule of 40 and efficiency reads that determine independence.
Formula
Benchmarks
FCF margin varies by model and stage; the point is direction and self-funding capability, not a universal number.
Ranges are illustrative; every published figure is cited from a named public source or labelled “RGM analysis.”
Synonyms & antonyms
Synonyms
Antonyms
Origin & history
Free cash flow has long been the cash-focused investor's preferred measure (central to Buffett-style "owner earnings"); after the 2022 shift from growth-at-all-costs to efficient growth, it rose to prominence in SaaS and startup finance as the truer-than-EBITDA read on cash generation - and increasingly the profitability half of the Rule of 40.
Etymology: source.
Usage trends
Search interest for this term over the last five years:
Common questions
- What is free cash flow?
- The cash a business generates from operations after subtracting capital expenditure — operating cash flow minus capex — the truest measure of the cash a company can actually keep or return.
- Why is free cash flow better than EBITDA?
- Because it subtracts the capital expenditure EBITDA adds back (via D&A), so it can't be flattered by accounting the way EBITDA can — it's closer to the actual cash the business generates.
- Why does free cash flow matter for growth?
- Positive free cash flow means a company can self-fund growth and isn't dependent on raising more capital; the Rule of 40 increasingly uses free-cash-flow margin as the profitability half.
Related tools & calculators
Resources & people to follow
- referenceWikipedia — free cash flow
- referenceEfficient-growth and SaaS-finance practice
- referenceRGM analysis — the truer cash read; harder to flatter than EBITDA, and what funds independence
Curated, non-competitor resources verified per term.
Related training
Disciplines
Areas of marketing where free cash flow (fcf) is a core concern: