The effect of tax rate on WACC K. Bell Jewelers wishes to explore the effect on

Question

The effect of tax rate on WACC K. Bell Jewelers wishes to explore the effect on its cost of capital of the rate at which the company pays taxes. The firm wishes to maintain a capital structure of 40% debt, 10% preferred stock, and 50% common stock. The cost of financing with retained earnings is 10%, the cost of preferred stock financing is 8%, and the before-tax cost of debt financing is 6%. Calculate the weighted average cost of capital (WACC) given the tax rate assumptions in parts a to c. a. Tax rate= 40% b. Tax rate 35% c. Tax rate = 25% d. Describe the relationship between changes in the rate of taxation and the weighted average cost of capital.

Explanation / Answer

a. WACC at 40% tax rate = 0.40*6%*(1-0.4) + 0.10*8% + 0.5*10% = 7.24%

b. WACC at 35% tax rate = 0.40*6%*(1-0.35) + 0.10*8% + 0.5*10% = 7.36%

c. WACC at 25% tax rate = 0.40*6%*(1-0.25) + 0.10*8% + 0.5*10% = 7.60%

d. As the tax rate decreases, the WACC increases and vice versa. The relationship is inverse

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