Answer:
9.73%
Step-by-step explanation:
For computing the after tax cost of debt first we have to determine the cost of debt by applying the RATE formula i.e. to be shown in the attachment below:
Given that,
Present value = $604.42
Future value or Face value = $1,000
PMT = 1,000 × 8% ÷ 2 = $40
NPER = 20 years × 2 = 40 years
The formula is shown below:
= Rate(NPER;PMT;-PV;FV;type)
The present value come in negative
So, after solving this,
1. The pretax cost of debt is 6.95% × 2 = 13.9%
2. And, the after tax cost of debt would be
= Pretax cost of debt × ( 1 - tax rate)
= 13.9% × ( 1 - 0.30)
= 9.73%