Answer:
11.57% and 9.02%
Step-by-step explanation:
For computing the before-tax and after- tax cost of debt we use the RATE formula i.e to be shown in the attachment below:
Given that,
Present value = $1,050 - $20 = $1,030
Future value or Face value = $1,000
PMT = 1,000 × 12% = $120
NPER = 15 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 11.57%
2. And, the after tax cost of debt would be
= Pretax cost of debt × ( 1 - tax rate)
= 11.57% × ( 1 - 0.22)
= 9.02%