Let’s say you just decided to sign up for the Chase Sapphire Preferred® card. Once you had the card in hand, you could begin using it for purchases and earning cash back for every swipe. For every dollar you spend on regular purchases, you’ll get 1 percent back in the form of rewards. For dining and travel purchases, on the other hand, you’ll score a smooth 2 percent back.
Residual income is calculated as net income less a charge for the cost of capital. The charge is known as the equity charge and is calculated as the value of equity capital multiplied by the cost of equity or the required rate of return on equity. Given the opportunity cost of equity, a company can have positive net income but negative residual income.