The cash flow statement, explained

The income statement tells you whether a company is profitable. The cash flow statement tells you whether it actually has money — and those two questions have surprisingly different answers more often than you’d think.

Why it exists

Because net income includes non-cash items and accruals, a perfectly profitable company can still run out of cash — the classic way promising businesses die. The cash flow statement cuts through the accounting and shows the actual cash generated and used over a period, split into three activities. Follow it and you can’t be fooled by profit that never turned into money.

Cash from operations

Operating cash flow is the cash thrown off by the core business — the most important of the three. It typically starts from net income, then adds back non-cash expenses like depreciation and adjusts for changes in working capital (money tied up in unpaid invoices, inventory, and bills owed). A healthy company generates steady, positive operating cash flow. If profits are rising but operating cash flow isn’t, that’s a red flag worth investigating.

Cash from investing

Investing activities cover buying and selling long-term assets: capital expenditure ("capex") on equipment and property, acquisitions, and buying or selling investments. Heavy capex makes this section negative — which often isn’t bad at all. It’s frequently the sign of a company investing to grow.

Cash from financing

Financing activities cover the cash exchanged with investors and lenders: issuing or repaying debt, issuing or buying back shares, and paying dividends. Raising money is an inflow; repaying debt, buying back shares, and paying dividends are outflows.

Putting it together

Add the three up — operating, investing, and financing — and you get the net change in cash for the period, which ties directly to the cash line on the balance sheet. One especially useful figure falls out of this: free cash flow, roughly operating cash flow minus capex. It’s the cash left over after a company has maintained and grown its asset base — money genuinely available to reward investors or reinvest. Many professionals consider it the truest measure of a company’s financial health.