Let’s use Jim from our personal finance example. Jim’s furniture manufacturer builds tables and has several large pieces of equipment in the sawmill used to re-saw logs and boards down to the finished dimensions. The sawmill has net operating revenues of $100,000 for year. The saws in the mill cost Jim a total of $500,000 and he is currently earning a return of 10% in his wholesale table business. Thus, he sets a minimum required return of 10 percent.
Managerial accounting defines residual income in a corporate setting as the amount of leftover operating profit after all costs of capital used to generate the revenues have been paid. It is also considered the company's net operating income or the amount of profit that exceed its required rate of return. Residual income is normally used to assess the performance of a capital investment, team, department or business unit.