This document discusses investment centers and methods for measuring assets employed and business unit performance. An investment center compares profit to the assets used to generate that profit. Measuring assets employed and return on investment (ROI) provides information for decision making and motivates managers. ROI is profit divided by assets employed. Economic value added (EVA) measures wealth creation by subtracting a capital charge from net operating profit after taxes. EVA attempts to capture true economic profit by considering the cost of capital.