Final answer:
The new levered cost of equity for the firm after changing its financing structure to 80% debt is calculated using the Modigliani-Miller Proposition II with taxes. The calculated cost is 23.6%, which matches option A.
Step-by-step explanation:
To calculate the new levered cost of equity for the firm after it has transformed 80% of its financing to debt, we can use the Modigliani-Miller Proposition II with taxes. This proposition provides us with a formula to determine the cost of equity in a leveraged firm (Re):
Re = Ra + (Ra - Rd)(1 - Tc)(D/E)
Where:
- Re is the levered cost of equity
- Ra is the cost of equity if the firm was all equity (unlevered cost of equity)
- Rd is the cost of debt
- Tc is the corporate tax rate
- D/E is the debt-to-equity ratio
Given the values:
- Ra (unlevered cost of equity) = 10%
- 80% debt financing implies D/E = 4 (since 80/20 = 4)
- Rd (cost of debt) = 6%
- Tc (tax rate) = 15%
Substituting these into our formula gives:
Re = 10% + (10% - 6%) * (1 - 0.15) * 4
Re = 10% + 4% * 0.85 * 4
Re = 10% + 13.6%
Re = 23.6%
Therefore, the firm's new levered cost of equity would be 23.6%, which corresponds to option A.