Answer:
At a corporate tax rate of 16.29%, both investment shall have same income, so it will be the indifference point.
Explanation:
Let take X to be the corporate tax rate
Note that 70% dividend exclusion for tax on dividend mean 30% is actually applied to dividend
Preferred dividend = 5000 * 7.75% = 387.5
Taxable dividend = 387.5 * 30% = 116.25
Interest on bond = 5000*10% = 500
For the purpose of Indifference of the two investment brought about by the two break-even corporate tax
387.5 - 116.25 * X = 500 - 500*X
500 X - 116.25 X = 500 - 387.5
383.75 X = 175 -112.5
383.75 X = 62.5
X= 62.5/383.75
X= 0.1629
X=16.29%
At a corporate tax rate of 16.29%, both investment shall have same income, so it will be the indifference point.