Answer:
6.0%
Step-by-step explanation:
Given that :
Marginal income tax rate = 32%
Interest rate before taxes = 8.8%
Annual after-tax rate of return if bond matures in 10 years will be the same as the annual after tax rate of return since the annual rate is constant.
Hence,
Annual after tax rate of return = Interest rate × (1 - tax rate)
Annual after tax rate = 8.8% × (1 - 32%)
Annual after tax rate = 0.088 × (1 - 0.32)
Annual after tax rate = 0.088 × 0.68
Annual after tax rate = 0.05984
= 0.05984 × 100%
= 5.984% = 6.0%