Cashflow Waterfall: From Operating Cash to Free Cash, Step by Step

Why CFO Alone Isn't FCF

Operating cash flow is a cleaner profitability measure than net income, but it isn't a distributable number. From CFO you still have to subtract maintenance capex (to keep the current business running) and deal with working-capital dynamics (unwinding a receivables build is great this quarter, but can't repeat). The cashflow waterfall makes each of these deductions visible instead of collapsing them into a single "free cash flow" number, which is how you tell sustainable FCF from quarterly noise.

What the Cashflow Waterfall Shows

The Cashflow Waterfall card starts at Net Income and walks right: D&A addback, stock-based comp addback, working-capital changes (broken into receivables, inventory, payables), other operating items → Operating Cash Flow → capex (maintenance + growth split where disclosed) → Free Cash Flow → debt repayment/issuance, dividends, buybacks → Net Change in Cash. Each bar is sized to its dollar magnitude and colored by direction. A TTM view vs a same-period-prior-year view is a single toggle.

Reading the Steps

Three checks separate clean FCF from gamed FCF. First, SBC as % of CFO: stock-based comp is a real economic cost (dilutes shareholders) but is added back in CFO. Growth software can run SBC at 20–40% of CFO, at which point the reported FCF is overstating distributable cash by the SBC amount. Second, working-capital contribution: if WC is contributing 30%+ of CFO this quarter, the benefit is probably non-recurring. Third, capex intensity vs revenue growth: maintenance capex flat while growth accelerates is a scalable business; maintenance capex rising with revenue is a capex-hungry one, and FCF margin is unlikely to expand.

Where It Fits

Use alongside FCF Yield (valuation), Income Waterfall (operating sibling), and Accruals Quality (diagnostic when reported NI and CFO diverge for several quarters). For capex-heavy cyclicals, also read the Leverage card — capex booms often front-run debt builds.

Open the Cashflow Waterfall → /app/stocks/AAPL/fundamentals