Free cash flow

Free cash flow (FCF) is the cash a company generates from operations, minus the capital expenditures needed to maintain and expand its asset base. It is the cash available to the company to repay debt, pay dividends, repurchase shares, or pursue strategic investments. Free cash flow = Operating cash flow - Capital expenditure. Free cash flow is arguably more reliable than reported earnings for valuing a company, because earnings can be distorted by accounting choices, but free cash flow is based on actual cash. A company with strong free cash flow can sustain itself, invest, and weather downturns. A company with weak free cash flow despite reported profit is burning cash and faces sustainability risks.

Calculation

Free cash flow is simple in concept:

Free cash flow = Operating cash flow - Capital expenditure

Where:

• Operating cash flow: Cash from core business (selling products, providing services).
• Capital expenditure: Cash spent on fixed assets (buildings, equipment, vehicles).

Example: A company reports:

• Operating cash flow: $500 million
• Capital expenditure: $150 million
• Free cash flow: $350 million

The $350 million is available to service debt, pay dividends, repurchase shares, or invest in acquisitions.

Why FCF matters more than earnings

Free cash flow is often considered the truest measure of a company’s financial performance because:

Accounting is not a factor: Free cash flow is based on actual cash in and out, not accrual-accounting choices. Two companies might report identical earnings using different depreciation methods, but their free cash flows will be the same.

Real economic constraint: A company must generate positive free cash flow eventually or it will run out of cash and fail. Earnings alone don’t ensure survival; free cash flow does.

No “accounting tricks”: A company can boost reported earnings via revenue-recognition timing or capitalization of costs. But free cash flow can’t be faked; either cash came in or it didn’t.

Capital intensity and FCF

Capital intensity — the amount of capex needed relative to revenue — varies by industry:

Capital-light: A software company might have OCF of $100M and capex of $10M, yielding FCF of $90M. 90% of operating cash is free.

Capital-heavy: A utility might have OCF of $100M and capex of $60M, yielding FCF of $40M. Only 40% is free. The utility must invest heavily to maintain infrastructure.

When comparing companies in different industries, understanding capex needs is critical.

FCF and valuation

Free cash flow is central to valuation models:

Discounted FCF: Company value = Sum of future FCF discounted to present. A company with stable, growing FCF is valuable; one with declining FCF is at risk.

FCF yield: FCF ÷ Enterprise value. A 10% FCF yield (paying out 10% of current FCF as dividends) is sustainable; a 2% yield has room to grow.

Positive vs. negative FCF

Positive FCF: The company generates more cash than it spends on capex. Healthy, sustainable.

Negative FCF: The company spends more on capex than it generates from operations. This can be intentional (a growth-stage company investing heavily) or a sign of distress (operating cash flow is insufficient).

A company with negative FCF must fund the gap with debt, equity issuance, or asset sales. This is unsustainable long-term.

FCF trends

Investors focus on FCF trends:

Growing FCF: Strong signal. The company is generating more cash over time.

Stable FCF: Healthy. The company can sustain dividends and investments.

Declining FCF: Warning sign. Either operating cash is declining or capex is rising unexpectedly.

FCF conversion rate (FCF ÷ Net income): A rate of 100%+ means FCF exceeds earnings (strong). A rate below 50% means significant accrual adjustments or high capex.

Adjustments to FCF

Companies sometimes disclose “adjusted FCF,” adding back certain items:

• Stock-based compensation (non-cash but reported as expense)
• Restructuring costs (one-time)
• Other “non-recurring” items

Investors should scrutinize these adjustments. A company that frequently adjusts FCF upward might be manipulating the metric.

FCF sustainability

A key question: How much of current FCF can the company sustain? If capex needs suddenly spike (due to aging equipment), FCF will decline. If technology obsolescence requires higher reinvestment, FCF will decline.

Companies with stable, low capex intensity (e.g., software, franchises) have more sustainable FCF.

See also