Final answer:
Eco's change in capital structure involves recalculating the cost of debt and equity, determining the new WACC, and comparing risks and benefits to decide which structure is better.
Step-by-step explanation:
If Eco decides to change its capital structure by issuing new bonds to retire preferred stock, several cost calculations must be performed. Firstly, the new cost of debt accounts for the newly issued bonds, which carry a 7.5% coupon rate, and additional discount and flotation costs that would impact the yield to maturity. The total discount and flotation costs per bond reduce the net proceeds, which should be considered when calculating the after-tax cost of debt.
Next, the new cost of common equity needs to be estimated using the revised beta factor in the CAPM formula. Since financial leverage impacts the riskiness of common stock, a higher beta reflects this increased risk. The new beta, the risk-free rate, and the expected market return are used to determine the cost of equity after modifying the capital structure.
Once we have the new costs of debt and equity, we can calculate Eco's new weighted average cost of capital (WACC) by considering the target weight of each component - which now excludes preferred stock and includes more debt - and their respective costs. The WACC is crucial in determining the attractiveness of the new capital structure compared to the original one.
Finally, deciding on whether the original or the new capital structure is better would depend on the comparison of WACC, the company's level of risk, financial flexibility, and other strategic considerations. A lower WACC might suggest increased value, but the added risk inherent with a higher proportion of debt should also be accounted for, as it affects Eco's financial risk profile and potential cost of financial distress.