Profit can be shaped by accounting choices; cash is harder to fake. Free cash flow shows how much real money a business generates — the fuel for dividends, buybacks, and growth.
Net income (from the income statement) includes non-cash items and can recognize revenue before cash actually arrives. The cash flow statement strips all that away and shows real money moving in and out, split into three sections: operating activities (cash generated by the core business), investing activities (cash spent on or raised from long-term assets, like buying equipment), and financing activities (cash from or paid to lenders and shareholders — debt, dividends, buybacks).
The single most important number this lesson builds toward is free cash flow (FCF): operating cash flow minus capital expenditures (money spent maintaining or growing the business's physical assets). FCF is what's actually left over to pay dividends, buy back stock, pay down debt, or reinvest — money that's already real, not just reported.
A useful cross-check: compare net income to operating cash flow. In a healthy business they track each other reasonably closely over time. When operating cash flow lags well behind net income for multiple periods, it's often because profit is being recognized before the cash is actually collected — growing receivables, or inventory piling up unsold — a "quality of earnings" red flag worth investigating.
Cash generated by the actual day-to-day business — the number to compare against net income.
Cash spent on equipment, property, or acquisitions — negative usually just means the company is investing in itself.
Cash paid to lenders and shareholders — debt repayment, dividends, buybacks (or raised, if positive).
Free cash flow here: $68M operating cash flow minus the capital-expenditure portion of investing activities (say $22M of that $25M) = $46M of free cash flow — real money the business generated after keeping its physical assets maintained.
Real filings don't come with round numbers, so here's a clean illustrative example showing exactly the divergence this lesson warns about.
| Line Item | Year 1 | Year 2 |
|---|---|---|
| Net Income (from income statement) | $40.0M | $52.0M |
| + Depreciation & Amortization | $12.0M | $13.0M |
| − Increase in Receivables | $4.0M | $38.0M |
| − Increase in Inventory | $3.0M | $5.0M |
| Operating Cash Flow | $45.0M | $22.0M |
Year 2's net income grew nicely (+30%), but operating cash flow actually fell, because receivables — money customers owe but haven't paid yet — jumped from $4.0M to $38.0M. The company is booking more sales on the income statement, but collecting proportionally less of that cash. That's exactly the kind of gap that's easy to miss if you only read the income statement.
Enter simplified figures — see operating cash flow, free cash flow, and whether cash is lagging behind reported profit.
Model: Operating Cash Flow = Net Income + D&A − Increase in Working Capital. Free Cash Flow = Operating Cash Flow − CapEx. If OCF is meaningfully below Net Income, that's flagged as a quality-of-earnings signal worth investigating.
Answer all five, then hit "Check My Answers" to see how you did. Get one wrong? No problem — the explanation will show you exactly why.
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Now that you can judge whether cash backs up profit, the next step is matching a company's cash priorities to your own goals.