Reported and Common-Size Cash Flow Statement Analysis

Updated for the 2026-2027 CFA® Level I curriculum.

The statement of cash flows tells you where a company's cash came from and where it went. Reading the reported statement in dollar terms shows the size and trend of that activity. Converting it into a common-size format strips out company size so you can compare cash flow patterns across firms or across years. Level I tests both skills together.

Key Takeaways

• Reported cash flow statement analysis examines actual dollar amounts in CFO, CFI, and CFF to assess cash flow quality and sustainability.

• Common-size cash flow statements remove the effect of company size so you can compare firms or time periods directly.

• Method 1 divides each line item by total net revenue, matching the approach used for common-size income statements.

• Method 2 divides each inflow by total cash inflows and each outflow by total cash outflows.

• The two methods use different denominators and answer different questions, so you must match the method to what the question asks.

• Strong analysis combines reported dollar trends with common-size percentages rather than relying on either one alone.

What You Need to Know for CFA Level I

• The LOS uses the verb "analyze and interpret," so expect questions that ask what a number means, not just how to calculate it.

• Know both common-size construction methods and recognize which one a question is using from the denominator described.

• Be ready to compare two companies' common-size cash flow statements and identify which one shows a more sustainable cash flow pattern.

• This note stops at interpreting cash flow composition. It does not cover free cash flow to the firm, free cash flow to equity, or cash flow ratios, which the next study note covers.

• The most common trap is applying the wrong denominator, such as dividing an outflow by total inflows instead of total outflows.

Reading the Reported Cash Flow Statement

The reported statement of cash flows splits cash activity into three sections: operating (CFO), investing (CFI), and financing (CFF). Analysis starts with three questions.

Is CFO positive and growing? A company with consistently positive CFO is generating cash from its core business. Declining or negative CFO despite reported net income is a warning sign worth investigating.

Does CFO cover capital spending and dividends? A mature, healthy company typically funds capital expenditures and dividends from operating cash flow rather than from new debt or equity. If CFI and CFF show heavy borrowing or share issuance alongside weak CFO, the company may be relying on external financing to stay afloat.

What is driving CFI and CFF? Large investing outflows for capital expenditures or acquisitions suggest growth investment. Large financing inflows from debt issuance suggest the company is funding that growth externally. Financing outflows for dividends and buybacks suggest the company is returning cash to shareholders.

Reading the reported statement this way gives you the raw trend. It does not yet let you compare a $500 million company to a $5 billion company on equal footing. That is the job of the common-size statement.

Building the Common-Size Cash Flow Statement

A common-size cash flow statement restates every line as a percentage instead of a dollar amount. There are two accepted methods.

Method 1: Percentage of Total Revenue

where:

• Cash flow line item is any individual line from CFO, CFI, or CFF, such as capital expenditures or dividends paid,

• Total revenue is net revenue from the income statement for the same period.

This method uses the same revenue base as a common-size income statement. A common-size balance sheet instead uses total assets. It shows how much cash each activity consumes or generates relative to sales, which makes it useful for tracking cash efficiency over time or against peers with different revenue levels.

Method 2: Percentage of Total Cash Inflows or Outflows

where:

• Individual inflow is any cash-generating line item, such as CFO or proceeds from debt issuance,

• Individual outflow is any cash-using line item, such as capital expenditures or dividends paid, and

• Total cash inflows is the sum of all inflow lines for the period. Total cash outflows is the sum of all outflow lines.

This method shows the composition of where cash came from and where it went, independent of revenue. A company that draws most of its cash from operations rather than financing shows a more sustainable pattern than one that depends on debt or equity issuance to stay cash positive.

Working Example

Meridian Co. reports the following for the year, in millions.

Step 1: Method 1, percentage of revenue

Step 2: Method 2, percentage of inflows and outflows

Method 1 shows Meridian converts 20% of revenue into operating cash flow, a useful efficiency measure to compare against peers. Method 2 shows that operations supply about 76% of all cash coming in, while financing supplies only about 19%. This mix points to a company funding itself mainly from its core business rather than leaning on debt, which is generally a sign of a more sustainable cash flow position.

Test Whether a Higher Cash-Flow Percentage Is Sustainable

Suppose another company reports revenue of $400 million in both years. CFO rises from $60 million to $80 million, so CFO as a percentage of revenue rises from 15% to 20%.

The cash-flow reconciliation shows a $20 million increase in operating payables in Year 2. All other operating cash-flow drivers are unchanged. The entire CFO improvement therefore comes from paying suppliers later, rather than generating more cash before working-capital movements.

For a sensitivity check, assume the additional supplier credit is temporary and cannot be repeated:

That adjustment returns the revenue-based percentage to 15%. It is an analytical sensitivity, not a correction to reported CFO. Longer agreed payment terms may be commercially sustainable; overdue bills or supplier pressure suggest a different conclusion.

A similar issue arises when inventory liquidation releases cash during a sales decline. Common-size figures identify the change, but the account reconciliation and business context explain its quality. Check the source of the improvement before carrying the higher percentage into a forecast.

Common Exam Traps

Using the wrong denominator

A question built on the "percentage of total outflows" method expects outflow lines divided by total outflows, not by total inflows or revenue. Mixing denominators produces a number that looks plausible but is wrong.

Mixing inflows and outflows in Method 2

Outflows are measured against total outflows and inflows against total inflows. Dividing an outflow by total inflows gives a meaningless figure even though the arithmetic runs cleanly.

Dropping the sign on outflows

Outflows stay negative in common-size form under Method 1. Converting them to positive percentages changes the meaning of the statement, especially when summing lines to check totals.

Confusing this note with free cash flow analysis

Common-size cash flow analysis describes the composition and proportion of reported cash flows. It does not calculate free cash flow to the firm or free cash flow to equity, which require adjustments beyond what appears directly on the cash flow statement.

Reading one period in isolation

A single year's common-size statement tells you less than a multi-year trend or a peer comparison. Exam questions often test whether you can spot a shift in composition across periods, not just calculate one year's percentages.

Practice Question

Harbor Inc. reports total cash outflows of $200 million for the year, made up of $120 million in capital expenditures and $80 million in dividends paid. Revenue for the year was $600 million. Using the percentage of total cash outflows method, what is the common-size percentage for capital expenditures?

1. 20%

2. 40%

3. 60%

FAQs About Reported and Common-Size Cash Flow Statement Analysis