Argaryen Corporation has a target capital structure of 70 percent common stock, 5 percent preferred stock, and 25 percent debt. Its cost of equity is 10 percent, the cost of preferred stock is 5 percent, and the pretax cost of debt is 6 percent. The relevant tax rate is 23 percent. a. What is the company’s WACC?

WACC =  8.41%

Explanation:

The weighted Average cost of Capital is the average cost of capital for the different sources of long-term capital available to a firm weighted according to the proportion each source of finance bears to the total capital in the pool..

After-tax cost of debt = (1- tax rate) × before tax cost of debt

                                   = (1-0.23)×  6% = 4.6%

Type                         Cost (%)               Weight               cost × weight

Equity                          10                          70                           7

Preferred stock          5                            5                             0.25

Debt                            4.6%                       25                          1.155

Total                                                       100                              8.405

WACC =  8.405 / 100   ×  100 = 8.41%

WACC =  8.41%

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