Free Cash Flow (FCF)
Executive Summary
Key Takeaways
- ✓ Free cash flow is the cash generated by a business after the capital expenditure required to sustain or grow its asset base, not accounting profit.
- ✓ It is the input variable a DCF valuation discounts to present value.
- ✓ Unlevered free cash flow (FCFF) is available to all capital providers; levered free cash flow (FCFE) is available to equity holders only, after debt service.
- ✓ The choice between FCFF and FCFE determines the correct discount rate — WACC for FCFF, cost of equity for FCFE.
- ✓ Free cash flow removes non-cash items and adjusts for working capital and capex, since these are the primary reasons profit and cash diverge.
Definition¶
Free cash flow (FCF) is the cash a business generates from its operations that remains available after funding the capital expenditure required to maintain or grow its operating asset base. It is the input variable that a discounted cash flow (DCF) valuation discounts to present value, and it is deliberately constructed to differ from accounting profit.
Why Cash, Not Profit¶
Accounting profit (net income) is affected by non-cash items — depreciation, amortization, certain provisions — that do not represent actual cash movements in the period. It also does not reflect capital expenditure, which is a real cash outflow but is capitalized on the balance sheet rather than expensed through the income statement. A business can be profitable on an accounting basis while consuming cash to fund growth, or can show modest accounting profit while generating substantial free cash flow if it has low ongoing capital needs. A valuation exercise is concerned with the cash a business can actually generate and distribute or reinvest — hence the use of free cash flow rather than net income.
Two Bases: FCFF and FCFE¶
Free cash flow is expressed on one of two bases, and the distinction matters because each pairs with a different discount rate:
- Unlevered free cash flow (FCFF) — the cash available to all capital providers (both debt and equity holders) before any financing effects. Discounted at WACC, it produces enterprise value.
- Levered free cash flow (FCFE) — the cash available to equity holders only, after debt service (interest and principal repayment). Discounted at the cost of equity, it produces equity value directly.
Mixing the two — for example, discounting FCFF at the cost of equity, or FCFE at WACC — is a common and material valuation error, since the cash flow basis and the discount rate must be internally consistent.
General Construction¶
Both FCFF and FCFE start from an operating profit measure and apply broadly similar adjustments:
- Add back non-cash charges (depreciation, amortization)
- Deduct capital expenditure
- Deduct (or add back) the increase (or decrease) in net working capital
- Apply financing adjustments specific to the chosen basis (FCFE additionally deducts net debt repayment and adds net new borrowing)
The specific starting point and adjustments for each basis are addressed on their respective pages: FCFF and FCFE.
Audit Considerations¶
A structural audit of a free cash flow build checks that:
- Non-cash add-backs reconcile to the depreciation and amortization schedule elsewhere in the model, rather than being a disconnected hardcoded figure
- Capital expenditure in the cash flow build matches the capex schedule and fixed asset roll-forward
- Working capital movements are derived from the balance sheet, not entered as a standalone assumption disconnected from the rest of the model
- The free cash flow line feeds the discounting mechanism at the correct, matching discount rate for its basis (FCFF at WACC, FCFE at cost of equity)
Common Errors¶
| Error | Description | Risk |
|---|---|---|
| Mismatched basis and discount rate | FCFF discounted at cost of equity, or FCFE discounted at WACC | Valuation output is neither enterprise nor equity value correctly |
| Disconnected capex line | Capex in the FCF build not linked to the capex schedule | Free cash flow does not reflect the actual model assumptions |
| Ignoring working capital | Working capital movement omitted or hardcoded to zero | Free cash flow overstates cash generation in growth periods |
| Using net income directly | Net income used as a proxy for free cash flow without adjustment | Ignores non-cash items and capital expenditure, producing an incorrect valuation input |
Continue Reading¶
Prerequisites¶
- Discounted Cash Flow (DCF) Valuation — the parent pillar
Related Glossary¶
How OXXON tests thisRun a free structural check with FMAE
Frequently Asked Questions
What is the difference between free cash flow and net income?
Net income is an accounting measure that includes non-cash items such as depreciation and amortization, and does not reflect capital expenditure or working capital movements. Free cash flow starts from operating results and adjusts for these items to arrive at the actual cash generated.
Is free cash flow the same as cash flow from operations?
No. Cash flow from operations, as reported on the cash flow statement, does not deduct capital expenditure. Free cash flow is cash flow from operations less the capital expenditure required to sustain or grow the business.
Why does a DCF use free cash flow instead of net income?
A DCF values a business based on the cash it can actually distribute or reinvest, not on an accounting construct. Net income includes non-cash charges and excludes capital spending, both of which materially affect the cash actually available to capital providers.
Can free cash flow be negative?
Yes. A growing or capital-intensive business can have negative free cash flow in a given period if capital expenditure or working capital investment exceeds operating cash generation. This is common for early-stage or rapidly expanding companies.
Related Articles
FCFF (Unlevered Free Cash Flow)
FCFF (Free Cash Flow to Firm), also called unlevered free cash flow, is the cash a business generates that is available to all of its capital providers — both debt and equity holders — before any financing effects such as interest payments or debt repayment. FCFF is built from NOPAT by adding back non-cash charges and deducting capital expenditure and working capital investment. Because FCFF is calculated independent of capital structure, it is discounted at the weighted average cost of capital (WACC), and the resulting present value is enterprise value — the value of the operating business before deducting net debt to arrive at equity value.
FCFE (Levered Free Cash Flow)
FCFE (Free Cash Flow to Equity), also called levered free cash flow, is the cash remaining for equity holders after a business has met its operating needs, capital expenditure, working capital investment, and all debt service obligations — interest and principal repayment (net of new borrowing). Because FCFE already reflects the effect of the company's actual capital structure, it is discounted at the cost of equity rather than WACC, and the resulting present value is equity value directly, with no further enterprise-to-equity bridge required.
NOPAT (Net Operating Profit After Tax)
NOPAT (Net Operating Profit After Tax) is a company's operating earnings (EBIT) adjusted to reflect the taxes that would be paid if the company had no debt, isolating operating performance from the effects of financing structure. NOPAT is calculated as EBIT multiplied by (1 minus the tax rate), and it deliberately excludes interest expense, which is a financing item rather than an operating one. NOPAT is the starting point for building unlevered free cash flow (FCFF): non-cash charges are added back and capital expenditure and working capital movements are deducted from NOPAT to arrive at FCFF, which is then discounted at WACC to derive enterprise value.
Discounted Cash Flow (DCF) Valuation
Discounted cash flow (DCF) valuation values a business, project, or asset as the present value of the cash flows it is expected to generate in the future. It is the most theoretically grounded of the major valuation methodologies, resting directly on the principle that a dollar of cash flow is worth more today than the same dollar received in the future, and that value is created when future cash flows exceed what capital providers require as compensation for the time value of money and risk. This page is the hub for the Knowledge Centre's DCF content: what DCF is and why it works, how free cash flow and discount rates are built, how terminal value is calculated and stress-tested, the method variants practitioners choose between, and — distinctively — how DCF failure modes map onto FMAE's existing structural audit rule taxonomy, since no generic valuation resource ties DCF mechanics to a named, testable audit standard.
Terminal Value
Terminal value (TV) is the estimated value, at the end of a financial model's explicit forecast period, of all cash flows that the asset or business is expected to generate beyond that period. In a discounted cash flow (DCF) analysis, the terminal value represents the present value of the perpetuity of cash flows from the terminal period onwards, discounted back to the valuation date. Terminal value is the single largest component of total enterprise value in most DCF analyses. It is typically significant because a business or asset's cash flow-generating life extends far beyond a practical explicit forecast period of 5 to 10 years.