CFA Level I Exam · Company Analysis: Past, Present, and Future

Analyzing Past Financial Performance for CFA Level I

Updated 7 October 2026 · Fact-checked

Analyzing past financial performance means using a company's historical statements, ratios, segment data and earnings quality checks to see what drove results and whether they will repeat. You compare trends over time and against peers, separate recurring from one-off items, and test whether reported profit is backed by cash.

Understand Analyzing Past Financial Performance

Valuation is about the future, but the future starts from the past. Historical statements show how fast revenue grew, how profitable the business is, how much capital it needs and how much cash it produces. A forecast that ignores this record is a guess.

The analyst works in layers. First, look at the trend in growth and margins over several years. Second, compare against peers and the industry to see if results are strong or weak. Third, break the total into pieces using segment data: revenue and operating profit by business line or region often reveal that one unit drives most of the profit or most of the risk.

Then ask about quality of earnings. High-quality earnings are sustainable, recurring and backed by cash. Warning signs include profit growing much faster than operating cash flow, rising receivables or inventory relative to sales, large one-off gains, changing accounting estimates, and heavy use of adjusted (non-IFRS) measures. Under IFRS and US GAAP, management has choices, so reported numbers need scrutiny.

Finally, link the history to drivers. Use DuPont analysis to split return on equity into margin, turnover and leverage. Ask what caused each change: price, volume, mix, cost control, acquisitions or currency. Only drivers likely to persist should carry into the forecast.

Key formulas to remember

Net profit margin: Net profit margin = Net income ÷ Revenue; Compare over time and with peers. Look at gross and operating margins too to locate where changes arise.
Three-step DuPont: ROE = (Net income ÷ Revenue) × (Revenue ÷ Average total assets) × (Average total assets ÷ Average equity); Margin × asset turnover × financial leverage. Shows whether ROE comes from profitability, efficiency or debt.
Cash flow to income (accrual check): CFO ÷ Net income; A persistently low or falling ratio can signal low-quality earnings. It is a warning sign, not proof of manipulation.
Cash-flow-statement accruals ratio: Accruals ratio = (Net income − CFO − CFI) ÷ Average net operating assets; **Net operating assets** = operating assets minus operating liabilities. A common way to measure them is (total assets − cash and marketable securities) − (total liabilities − total debt). Average them over the period. CFI is subtracted as a proxy for operating-related investment outflows. Cash spent on long-term operating assets such as equipment shows up as negative CFI, so subtracting it counts that spending as investment in net operating assets. This assumes most investing cash flow relates to operations. Higher accruals can signal lower earnings quality. This is a warning sign, not proof. Direction and trend matter more than one value.
Balance-sheet accruals ratio: Accruals ratio = (Ending net operating assets − Beginning net operating assets) ÷ Average net operating assets; The balance-sheet version of the same idea. It measures growth in net operating assets relative to their average size. Read it the same way: higher values are a warning sign, not proof.
Segment margin: Segment operating margin = Segment operating profit ÷ Segment revenue; Also compute each segment's share of total revenue and profit to see where value is created.
Growth rate: Growth = (Current value ÷ Prior value) − 1; Use consistent periods. For multi-year growth use the compound annual rate.

How to solve Analyzing Past Financial Performance questions

Use this sequence for any question on evaluating historical results.

1Identify what the question asks: trend, comparison, driver of change, or reliability of earnings.
2Pick the right data: income statement for margins, cash flow statement for cash backing, segment note for the mix.
3Compute the needed ratio using the formula, using average balances if the question gives them.
4Compare with the prior period or peers, and note the direction and size of the change.
5Decompose the change, for example with DuPont, or by segment contribution to total growth.
6Separate recurring from non-recurring items before drawing any conclusion about sustainability.
7Check cash backing and accounting choices for quality of earnings concerns.
8Eliminate options that overstate the conclusion, such as claiming proof of manipulation from one ratio.

Quickest way: Three-check shortcut

When to use it: Use when a question gives a few numbers and asks for the best interpretation.

Check direction: did the margin, turnover or leverage move up or down?
Check cause: which DuPont component or segment explains most of the change?
Check cash: is operating cash flow tracking net income?
Pick the option that matches all three and does not claim more than the data show.

Common mistakes in Analyzing Past Financial Performance

Treating a high ROE as good without looking at leverage
ROE is a single headline number and looks attractive.
Fix: Run the DuPont split. If ROE rose only because of leverage, risk rose too.
Concluding earnings are manipulated because CFO is below net income
Students treat warning signs as proof.
Fix: Say it raises a question. Growth, timing and working capital can explain gaps; look at the trend.
Using total company margins and ignoring segment data
Consolidated numbers are easier to read.
Fix: Check whether one segment has diverging margins or growth that hides risk or opportunity.
Carrying one-off gains or losses into the forecast
Students forget to separate recurring from non-recurring items.
Fix: Strip out unusual items first, then judge the underlying trend.
Using ending instead of average balances in DuPont
It is quicker, and the question may give both.
Fix: Use averages when both beginning and ending balances are given, unless the question says otherwise.

Worked examples

Example 1

A company reports revenue of €800 million and net income of €64 million. Average total assets are €640 million and average equity is €320 million. Compute ROE using the three-step DuPont and interpret the role of financial leverage.

Show the solution

Net profit margin = 64 ÷ 800 = 0.08, or 8%.
Asset turnover = 800 ÷ 640 = 1.25.
Financial leverage = 640 ÷ 320 = 2.0.
ROE = 0.08 × 1.25 × 2.0 = 0.20.
Check: 64 ÷ 320 = 0.20. It matches.
Return on assets = 0.08 × 1.25 = 0.10, or 10%. Leverage of 2.0 doubles this to the 20% ROE.

Answer: ROE is 20%. Financial leverage of 2.0 means assets are twice equity, so debt financing doubles the 10% return on assets (8% × 1.25) to a 20% ROE. This leverage also adds financial risk.

Example 2

Over a year, a firm's net income rose from $50 million to $70 million, while operating cash flow fell from $55 million to $40 million. Receivables rose sharply faster than sales. What is the best conclusion?

Show the solution

Compute CFO ÷ net income: prior year 55 ÷ 50 = 1.10; current year 40 ÷ 70 ≈ 0.57.
The ratio fell sharply while profit grew, so profit is increasingly not backed by cash.
Rising receivables faster than sales suggests revenue may be recognized aggressively or collections are slowing.
This is a warning sign of lower earnings quality, but it does not by itself prove manipulation.

Answer: Earnings quality has deteriorated and needs investigation, including revenue recognition and credit terms. It is a red flag, not proof of manipulation.

Exam tips

Answers usually hinge on interpretation. Choose the option that matches the data without overclaiming.
Words like 'proves' or 'always' in an option are usually traps; warning signs are not proof.
In DuPont questions, check the arithmetic by multiplying the three parts and comparing with net income ÷ equity.
If segment data are given, compare segment margins and shares of profit before choosing an answer.
With about 90 seconds per question, compute only the ratio the options differ on.

Practice questions from Company Analysis: Past, Present, and Future

Analyzing Past Financial Performance: frequently asked questions

What is quality of earnings in CFA Level I?

It describes how sustainable, recurring and cash-backed reported earnings are. High-quality earnings come from core operations and reflect economic reality. Low-quality earnings rely on one-offs, aggressive estimates or accruals that cash does not support.

Why does segment analysis matter?

Consolidated figures can hide differences between businesses or regions. Segment data show where growth, profit and risk are concentrated, which helps you forecast each part with its own drivers.

Which ratios are most useful for past performance?

Margins, asset turnover, ROE and its DuPont components, growth rates and cash flow to income ratios cover most questions. Choose the one that matches what the question asks you to explain.

Does a low CFO to net income ratio prove earnings manipulation?

No. It is a warning sign that justifies a closer look, for example at receivables, inventory and accounting estimates. Working capital timing and growth can also lower CFO legitimately.