Return on Equity, Assets and Invested Capital
Profit means little without knowing how much capital was needed to produce it. These ratios answer that, and the differences between them are mostly about leverage.
MadStockAlerts Research · Updated August 28, 2026
What to take away
- Return on equity measures profit against shareholders' capital and is flattered by leverage.
- Return on invested capital measures profit against all capital and is the cleaner read.
- Sustained ROIC above the cost of capital is what compounding value actually looks like.
- The DuPont decomposition shows which of three levers is driving a return.
- Growth destroys value when returns are below the cost of capital.
- Growth destroys value at a company earning below its cost of capital, and the faster it grows the more it destroys.
MAD Academy Training Video · 0:46
The Question That Ranks Businesses
Returns on equity, assets and invested capital ask how well a company turns money into more money — and only one of them resists leverage.
This lesson is part of a Stock Alerts + Tools plan.
The three ratios
| Ratio | Numerator | Denominator | Sensitive to leverage? |
|---|---|---|---|
| ROE | Net income | Shareholders' equity | Yes, strongly |
| ROA | Net income | Total assets | Partly |
| ROIC | After-tax operating profit | Debt plus equity less cash | No |
The differences are almost entirely about how borrowing is treated. Because equity is the denominator of return on equity, replacing equity with debt raises the ratio without the business improving at all.
Why ROIC is the honest one
Return on invested capital asks what return the business earns on every dollar of capital put into it, whoever supplied it. A company earning 20 percent on invested capital while capital costs it 8 percent creates value with every dollar it reinvests. One earning 5 percent against the same cost destroys value by growing.
This is the mechanism behind long-run compounding. A business that can reinvest large amounts at high returns compounds; a business that earns high returns but cannot reinvest returns cash instead; a business that reinvests heavily at low returns gets bigger and worth less.
The third case is the one that surprises people, because growth is usually assumed to be good. It is only good when the capital funding it earns more than that capital costs, and a company can grow revenue for a decade while making its owners poorer.
DuPont decomposition
ROE = net margin x asset turnover x equity multiplier
- net margin: profit per dollar of sales
- asset turnover: sales per dollar of assets
- equity multiplier: assets per dollar of equity, which is leverage
Two companies with the same ROE can be entirely different: a luxury brand with high margins and low turnover, and a discount retailer with thin margins and very high turnover. Both are legitimate models and they respond to a downturn in completely different ways.
The decomposition also exposes an ROE that is high only because the third term is. A 25 percent return on equity built on a five-times equity multiplier is a leveraged version of a five percent return on assets, and the leverage is doing all of the work.
- 1Net marginNet income / revenue. How much of a sale is kept
- 2x Asset turnoverRevenue / assets. How hard the asset base works
- 3x Equity multiplierAssets / equity. How much of it is borrowed
- 4= Return on equity
The limits
All three ratios divide a flow by a stock, and the stock is a balance sheet figure carrying every distortion the balance sheet carries. A company whose equity has been driven low by buybacks reports a spectacular return on equity for reasons that have nothing to do with operations.
Goodwill has the opposite effect. A serial acquirer carries the premiums it paid on its balance sheet, which depresses its computed return on capital and is arguably the correct treatment, since that premium was money genuinely spent.
Comparing the return to the cost
A return on capital is only meaningful against the cost of that capital. A business earning eight percent on capital that costs ten is destroying value while reporting a profit, and one earning twenty on capital costing eight is creating it. The accounting profit is positive in both cases.
economic profit = (ROIC - WACC) x invested capital
- ROIC is the return on invested capital, after tax
- WACC is the weighted average cost of capital, blending debt and equity
- a negative result means growth destroys value rather than creating it
This is the framework that resolves an apparent paradox: growth is not always good. A company earning below its cost of capital that grows is deploying more capital at a loss, and the faster it grows the more value it consumes. Growth is valuable only where the return on the incremental capital exceeds its cost.
The cost of capital is an estimate rather than an observation, and reasonable people produce estimates several points apart. The framework is still useful because the comparison is usually not close: businesses tend to be clearly above or clearly below, and the ambiguous cases are the ones where the answer was always going to be a judgement.
How high returns persist, or fail to
High returns on capital attract competition, and competition drives returns toward the cost of capital. That is the default expectation, and any company sustaining high returns for a long period is doing so because something prevents the process from completing.
- Switching costs, where leaving is expensive for the customer regardless of what a competitor offers.
- Network effects, where the product improves as more people use it, so a new entrant starts with an inferior version.
- Scale in a business with high fixed costs, where the largest participant has a structurally lower unit cost.
- Intangible assets: a brand, a licence, a patent, or a regulatory position a competitor cannot simply build.
- Cost advantages from a unique asset, such as a mine or a location, that cannot be replicated at any price.
The practical use of the list is as a test of a valuation. A model assuming high returns for fifteen years is asserting that one of these mechanisms will hold for fifteen years, and stating which one makes the assumption arguable rather than merely present.
The empirical pattern across large samples is that returns on capital revert toward the mean over roughly a decade. A model that does not incorporate any fade is assuming an exception, and it is worth being explicit that it is doing so.