The three sections
Source: Buffett & Clark, chs. 44-47
The cash flow statement follows the actual cash, and it is split into three parts that answer where the cash came from and where it went.
- Operating activities is the cash the core business brought in from selling its products. This is the part that matters most, because it is the cash the company actually produces by doing what it does.
- Investing activities is cash spent on long-term assets like factories and equipment, and cash spent buying other companies. For most healthy businesses this is a net outflow, since they are putting money to work.
- Financing activities is cash moving between the company and its owners and lenders: dividends paid out, shares bought back, and debt borrowed or repaid. This is where you see how management hands cash back to shareholders.
Why have a whole statement for cash when the income statement already reports profit? Because profit and cash are not the same thing. Profit involves judgment calls about timing. Cash is simply what landed in the bank. The gap between them is where this statement earns its keep.
Is the profit real?
Source: Buffett & Clark; Penman
The single most useful check on a company is to compare its operating cash flow to its reported profit. Over several years, the two should track each other reasonably closely. Real profit turns into real cash.
When operating cash flow stays well below reported profit year after year, treat it as a warning. It suggests the profit is being propped up by bookkeeping that never turns into money, such as booking sales before the cash arrives. This is called the quality of earnings, and cash flow is the test of it. A company can report rising profit for a while on paper, but it cannot fake cash in the bank for long.
Free cash flow
Source: Buffett; modern practice
Operating cash flow is not quite the cash a company can do as it pleases with, because some of it has to be spent just to keep the business running. That spending on long-term assets is called capital spending, or capex. What is left after it is free cash flow, and it is the number value investors care about most. It is the cash truly available to pay dividends, buy back shares, pay down debt, or buy other companies.
Capex comes in two kinds. Maintenance capex keeps the business at its current size. Growth capex expands it, and is only worth it if the new spending earns a good return. A quality business needs only a small share of its cash for maintenance, which leaves plenty free. A business that has to pour most of its cash back in just to stand still is not the compounding machine you want.
One adjustment matters in modern times. Many companies, especially in tech, pay staff partly in shares. This stock-based pay is added back into cash flow because no cash left the company, but it still quietly shrinks each owner's slice. To see the true free cash that reaches shareholders, subtract stock-based pay back out. If it eats a large share of free cash flow, the headline number flatters the business.
Owner earnings
Source: Buffett, 1986 letter; via Buffett & Clark
Owner earnings is Buffett's favorite measure of profit, and it lives here in the world of cash. It is the cash a company could hand its owners each year without weakening the business. You start with reported profit, add back charges that did not actually cost cash, and subtract the spending the company needs just to keep going:
The tricky input is the maintenance spending, the money needed to keep the company at its current size, as opposed to the money spent to grow it. The reported number lumps both together, so you have to estimate the split. For a mature company, almost all of its capital spending is maintenance. For a fast grower, you scale the spending back in line with how fast sales are rising.
Owner earnings can land above or below reported profit — below when working capital and maintenance spending outweigh the non-cash charges added back, above when depreciation runs ahead of the upkeep the business truly needs — but it stays close to free cash flow either way. It is the best picture of what the company is really worth, in cash, to someone who plans to hold it for a long time. That is why it feeds straight into the valuation work in Chapter 6.
What value investors look for
Source: Buffett & Clark
The short list for the cash flow statement, read across several years:
- Operating cash flow that keeps pace with reported profit over time.
- Capital spending that takes only a small share of operating cash flow.
- Steady, growing free cash flow.
- Stock-based pay small enough that it does not gut the free cash flow.
- Cash handed back to owners through buybacks at sensible prices, not sky-high ones.
With all three statements read, you can judge a business on its own terms. The next chapter turns these readings into a decision framework: the five questions every value investor asks before buying.