ROIC and margins: what sets a quality company apart

A company creates value when it earns more on the capital it invests than that capital costs. ROIC (return on invested capital) measures exactly that and, unlike ROE, cannot be inflated with debt. Together with margins, it is the best clue as to whether a business has a durable advantage. We use a fictional company, Example Corp, with the same figures throughout this series, so you can see how the income statement, balance sheet and cash flow fit together.

  • ROIC = after-tax operating profit / invested capital.
  • Value is created when ROIC exceeds the cost of capital consistently.
  • Unlike ROE, ROIC includes debt in capital and does not improve by borrowing.
  • A high, stable ROIC over many years usually signals a competitive advantage.
  • Stable or rising margins reinforce the conclusion; volatile margins weaken it.

How to calculate it

  • NOPAT (after-tax operating profit) = EBIT × (1 − tax rate) = 130 × 0.75 = $97.5M.
  • Invested capital = equity + net debt = 600 + 400 = $1,000M.
  • ROIC = 97.5 / 1,000 = 9.75%.

There are variants (capital from operating assets, excluding goodwill, averaging start and end of year). What matters is using the same formula to compare.

ROIC vs cost of capital

Capital is not free: lenders charge interest and shareholders expect a return. The weighted average of both is the weighted average cost of capital (WACC), often around 7–9% for mature companies.

Example Corp's ROIC is 9.75%: it creates some value, but with little margin. With a 20% ROIC, each reinvested dollar would create a lot of value; with 5%, growth would destroy value even as profit rose.

Why ROIC is more reliable than ROE

Example Corp's ROE is 13.75%, higher than its ROIC. The difference comes from debt: financing part of the business with loans cheaper than its return lifts ROE. If the company borrowed more, ROE would keep rising — and so would risk.

ROIC looks at all capital regardless of its source, so it reflects the quality of the business itself.

Margins: the other side of quality

A high ROIC comes from high margins, from using little capital to sell a lot, or both. Check over several years:

  • Stable gross margin: the company can pass cost increases on to customers.
  • Rising operating margin: economies of scale.
  • Little change in downturns: the product is necessary or hard to replace.

Margins that rise and fall with the cycle point to a business more dependent on the economy than on its own advantage.

What to look for in practice

  1. ROIC over the last 5–10 years, not one year.
  2. Comparison with direct competitors.
  3. Trend: a slowly falling ROIC may signal an eroding advantage.
  4. Reinvestment opportunities: a high ROIC is worth more if the company can reinvest a lot of capital at that return.

To understand where a high ROIC comes from, see competitive advantage.

Frequently asked questions

What is ROIC?

The return a company earns on all the capital invested in its business, from both shareholders and lenders.

What is a good ROIC?

One that consistently exceeds the cost of capital. As a reference, a stable ROIC above 15% often indicates a high-quality business.

What is the difference between ROIC and ROE?

ROE only measures the return on shareholders' money and rises with debt. ROIC includes debt in capital and is not inflated by borrowing.

Where do I find the data?

In the income statement (EBIT, taxes) and the balance sheet (equity, debt and cash).