🎯 In 30 seconds: Valuation tells you the price. Quality tells you what you get for it. A high-quality business keeps a large share of each sales dollar (margins), earns a high return on the money invested in it (ROIC), does not depend on borrowed money to look good (debt and interest coverage), turns profit into real cash (free cash flow) and does not keep printing new shares (dilution). This chapter shows how to calculate each one from the three statements, and what a warning sign looks like.
Why quality matters
Two companies can have the same P/E and be very different investments. One may be growing on its own cash. The other may be borrowing to stay afloat. Over years, the quality of the business usually matters more than whether you paid a little more or less for it.
For traders, quality matters for a different reason. Fragile businesses tend to fall harder on bad news. If you hold a position into an earnings report, knowing the balance sheet tells you how bad a surprise could get.
Everything here comes from the statements explained in The three financial statements. You only need division.
The worked example: Company Q
Company Q is hypothetical. It sells kitchen equipment to restaurants. Here are its numbers for the latest year, in millions of dollars.
| Income statement | $M | Balance sheet (year end) | $M |
|---|---|---|---|
| Revenue | 1,000 | Cash | 100 |
| Cost of goods sold | -400 | Other current assets | 300 |
| Gross profit | 600 | Long-term assets | 800 |
| Operating expenses | -450 | Total assets | 1,200 |
| Operating income (EBIT) | 150 | Current liabilities | 250 |
| Interest expense | -20 | Long-term debt | 300 |
| Income before tax | 130 | Shareholders' equity | 650 |
| Tax (20% assumed) | -26 | Liabilities + equity | 1,200 |
| Net income | 104 |
From the cash flow statement: cash from operations was $140M and capital spending was $50M. Shares outstanding rose from 100 million to 104 million during the year. Last year's net income was $96M.
Margins: how much of each dollar is kept
A margin is a profit line divided by revenue. Each one tells you something different.
| Gross margin = gross profit / revenue = 600 / 1,000 | 60.0% |
| Operating margin = operating income / revenue = 150 / 1,000 | 15.0% |
| Net margin = net income / revenue = 104 / 1,000 | 10.4% |
- Gross margin shows pricing power and production cost. A high gross margin often means customers will pay well above what the product costs to make.
- Operating margin adds the cost of running the company: salaries, rent, research, marketing. It shows whether the whole operation is efficient.
- Net margin is what is left after interest and tax. It can be distorted by one-time items, so read it with care.
Margins vary hugely by industry. A grocery chain may run on thin margins while a software company keeps most of each dollar. NYU's Aswath Damodaran publishes average margins by industry each January, which gives you a fair comparison. What matters most is the trend: steady or rising margins over five years usually mean a business is holding its ground.
Returns: ROE and ROIC
Margins tell you profit per dollar of sales. Returns tell you profit per dollar of money put into the business. That is closer to what an owner cares about.
Return on equity (ROE) = net income / shareholders' equity. Q: 104 / 650 = 16.0%.
ROE has a flaw: it rises when a company borrows more, because debt shrinks equity without changing the business. To see this, split ROE into three parts (this is called the DuPont breakdown):
| Net margin: 104 / 1,000 | 10.4% |
| x Asset turnover: revenue / assets = 1,000 / 1,200 | 0.833 |
| x Equity multiplier: assets / equity = 1,200 / 650 | 1.846 |
| = ROE | 16.0% |
The third part, the equity multiplier, is pure borrowing. Push it up and ROE rises, along with risk.
Return on invested capital (ROIC) fixes that by measuring the return on all money in the business, from lenders and owners alike:
- NOPAT (net operating profit after tax) = operating income x (1 - tax rate) = 150 x 0.8 = 120.
- Invested capital = debt + equity - cash = 300 + 650 - 100 = 850.
- ROIC = 120 / 850 = 14.1%.
Analysts compare ROIC with the company's cost of capital, the return its lenders and owners require. A business that earns more on new investment than that cost creates value as it grows. One that earns less destroys value as it grows, even while revenue rises.
Now meet hypothetical Company R. Same revenue, same operating income of $150M, same total assets, same cash. But R has $750M of debt, $200M of equity and pays $50M of interest. Its net income is ($150M - $50M) x 0.8 = $80M.
| R's ROE: 80 / 200 | 40.0% |
| R's ROIC: 120 / (750 + 200 - 100) | 14.1% |
| R's debt-to-equity: 750 / 200 | 3.75 |
A headline ROE of 40% would look superb on a stock screen. ROIC shows the business underneath is identical to Q's. The difference is risk: R owes $750M.
Debt and liquidity: can it survive a bad year?
Debt-to-equity = total debt / shareholders' equity. Q: 300 / 650 = 0.46. R: 3.75.
Interest coverage = operating income / interest expense. How many times over the company can pay its interest from operating profit.
| Q: 150 / 20 | 7.5x |
| R: 150 / 50 | 3.0x |
Now stress test it. Suppose a recession cuts operating income in half, to $75M. Q still covers its interest 3.75 times. R covers it 1.5 times, and its net income drops from $80M to $20M, a 75% fall. Q's drops from $104M to $44M, a 58% fall. Debt magnifies bad years just as it magnified ROE in good ones.
Current ratio = current assets / current liabilities. Current means due or usable within a year. Q: 400 / 250 = 1.6. Below 1.0 means bills due within a year exceed the assets that turn into cash within a year, which deserves a closer look, though some businesses with fast-moving cash (like grocers) run that way normally.
Free cash flow: is the profit real?
Free cash flow = cash from operations - capital spending. Q: 140 - 50 = $90M.
Cash conversion = free cash flow / net income. Q: 90 / 104 = 87%. Over several years, a healthy company usually converts a large share of its profit into free cash. If conversion stays low year after year, profits may be stuck in unpaid customer bills or unsold inventory, or the business may need heavy spending just to stand still.
Share dilution: is your slice shrinking?
Dilution happens when a company issues new shares. Each existing share then owns a smaller piece. Common causes: stock-based pay for employees, selling new shares to raise cash, and converting bonds into shares.
| Net income growth: (104 - 96) / 96 | +8.3% |
| Share count growth: (104 - 100) / 100 | +4.0% |
| Last year EPS: $96M / 100M shares | $0.96 |
| This year EPS: $104M / 104M shares | $1.00 |
| EPS growth | +4.2% |
Q's profit grew 8.3%, but your share of it grew only 4.2%. Half the growth went to new shareholders. Check the share count line on the income statement every year. Buybacks work the other way, shrinking the share count, but only help if the price paid is sensible.
A quality checklist
- Gross and operating margins: steady or rising over five years?
- ROIC: consistently in double digits, and not driven by a shrinking capital base?
- ROE vs ROIC: is a high ROE mainly borrowed?
- Interest coverage: comfortable even if operating income halves?
- Current ratio: enough short-term assets to meet short-term bills?
- Free cash flow: positive most years, and close to net income over time?
- Share count: flat or falling, or rising a few percent every year?
Try it
Redo the stress test with your own numbers: cut Q's operating income by 70% instead of 50%. What are its interest coverage and net income now? (Answer: operating income $45M, coverage 2.25x, net income ($45M - $20M) x 0.8 = $20M.) Do the same for R. (Operating income $45M is less than its $50M interest, so it now loses money before tax.)
Then pick two companies from the same industry with the Stock screener, pull their last 10-K filings, and fill in the checklist above for both. Write one sentence on which is the stronger business and why.
- Company Q has revenue of $1,000M and gross profit of $600M. What is its gross margin? Answer: 60%.
- Why does the chapter prefer ROIC to ROE when judging a business? Answer: ROE rises when a company borrows more, because debt shrinks equity. ROIC measures the return on all money in the business, from lenders and owners, so borrowing cannot flatter it.
- Q’s operating income is $150M and its interest expense is $20M. What is its interest coverage, and what is it if operating income halves? Answer: 7.5x, and 3.75x if operating income halves to $75M.
- Q’s net income grew from $96M to $104M while its shares rose from 100 million to 104 million. How much did EPS grow? Answer: About 4.2%, from $0.96 to $1.00, even though net income grew 8.3%.