The WACC is basically computed by the sum of multiplying the costs per component to its respective proportional weight (how much that company uses a certain cost of capital) [See Appendix 1]. As financial management is focused on the maximization of the stock price, an optimal structure of costs based on these three factors is needed.
In SIVMED’s case, based on the definition of WACC, all capital bases should be included in its WACC. These include its common stock, preferred stock, bonds and long-term borrowings. In addition to being able to compute for the costs of capital, the WACC also determines how much interest SIVMED has to pay for all its activities. The value of the firm’s stock, which we want to maximize, depends of the after-tax cash flow. Hence, after-tax values for WACC are also needed. Furthermore, cost of capital is used to determine the cost of each debt, stock or common equity. Being able to analyze these will be essential into deciding what and how new capital should be acquired. Hence, the present marginal costs are ideally more essential than historical costs