Answer: a. 9%
b. 5.76%
Step-by-step explanation:
a. The Pre-tax cost of debt is the interest rate of the debt issue as it is before it is adjusted for tax. That interest rate is 9% and so is the Pre-tax cost of debt.
b. The After tax cost of debt has been adjusted for the tax rate. Interest is tax deductible so the tax rate will be adjusted from the interest rate by;
After tax cost of debt = Pre-tax cost of Debt ( 1 - tax rate)
= 9% * ( 1 - 36%)
After tax cost of debt = 5.76%