return on assets
/ R-O-A /
Imagine two food trucks. One earns 20,000 a year using 100,000 of equipment; the other earns the same 20,000 but needed 400,000 of equipment to do it. The first is clearly the better business — it squeezes more profit out of less stuff. Return on assets captures exactly this idea: how much profit a company generates from every dollar of assets it controls, regardless of who paid for those assets.
Return on assets, or ROA, equals net income divided by total assets, expressed as a percentage. (Many analysts use average total assets — the start-of-year plus end-of-year figure divided by two — since income is earned across the whole year.) If a company earns 50,000 of net income on 500,000 of assets, its ROA is 50,000 / 500,000 = 10%, meaning it earned 10 cents of profit for each dollar of assets. Because it ignores how the assets were financed, ROA measures the raw earning power of the asset base itself.
Return on assets matters because it judges management's skill at deploying resources, and lets capital-light and capital-heavy firms be compared on a common footing. It is a building block of the DuPont framework, where it splits into net margin times asset turnover. The caveat: total assets are carried largely at historical cost, so an old factory with low book value can inflate ROA, making a firm look more efficient than a competitor with newer, fully valued assets — a comparison that flatters age rather than skill.
Two firms each earn 60,000 in net income. Firm A holds 600,000 of assets (ROA 10%); firm B holds 1,200,000 (ROA 5%). Same profit, but firm A produces it from half the asset base — a sign it uses its resources twice as productively.
Equal profit from fewer assets means a higher, healthier ROA.
Because assets sit at historical cost, an old, heavily depreciated asset base can inflate ROA, flattering a firm relative to a rival with newer, fully valued assets.