Chapter 19 – Strategic Performance Measurement: Investment Centers
19-2
19-5 We can enhance the ROI measure’s usefulness by making it the product of two
ratios:
ROI = (Profit ÷ Sales) × (Sales ÷ Assets)
ROI = ROS × AT
Return on sales (ROS) is the firm’s profit per sales dollar and it measures the unit
manager’s ability to control expenses and increase revenues to improve
increased sales from a given level of investment in assets. Together, the two
components of ROI tell a more complete story of the manager’s performance and
enhance top management’s ability to evaluate and compare the different units.
19-6 The key advantage of residual income (RI) is that it deals effectively with the
limitation of ROI: ROI has a disincentive for the managers of the most profitable
units to make new investments. With residual income, no matter how profitable
the unit, there is still an incentive for new profitable investment. In contrast, a key
limitation is that since RI is not a percentage, it suffers the same problem of using
19-7 Economic value added (EVA®) is a profitability measure that approximates the
“economic earnings” of an investment center. Operationally, we define EVA® as
business unit’s income after-tax cash earnings and after deducting an imputed
charge of the level of invested capital in the business unit. On the surface, RI and
EVA® look confusingly similar. There is a major difference, however. Residual
income (RI) is calculated entirely using reported accounting data, for income and