Final answer:
To calculate the after-tax rate of return on a taxable bond with a 9.0 percent yield and a 28 percent marginal tax rate, you multiply the yield by 1 minus the tax rate, resulting in a 6.48 percent after-tax return.
Step-by-step explanation:
To calculate the after-tax rate of return on the taxable bond paying a yield of 9.0 percent with a marginal tax rate of 28 percent, we use the formula:
After-tax return = Yield * (1 - Marginal tax rate)
Plugging the values in, we get:
After-tax return = 9.0% * (1 - 0.28)
After-tax return = 9.0% * 0.72 = 6.48%
Therefore, the after-tax rate of return on the taxable bond is 6.48 percent.