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Specify the earnings measure
This cluster uses net operating profit after tax, or NOPAT, under an explicit simplified tax assumption. It is an operating earnings measure, rather than automatically a complete project cash flow. Depreciation, working-capital movements and new outlays can create differences.
Document the denominator
The worked case uses average operating invested capital over the earnings period. Other reports may use ending balances or different operating-asset definitions. Record exclusions such as nonoperating cash instead of treating any debt-plus-equity total as an interchangeable base.
Check period and scope consistency
| Field | Check |
|---|---|
| NOPAT | Operating scope and tax assumptions |
| Capital | Operating coverage and balance convention |
| Period | Earnings and balance dates match |
| Comparator | Compatible required-return scope and period |
Separate a retrospective ratio from a new-project valuation
A company can report a historical ROIC while a new proposal has another risk and future schedule. The ratio alone does not prove the new proposal’s NPV. Use it as one defined performance measure and investigate changes in the numerator and base.