Answer:
7.67%
Step-by-step explanation:
The Excel rate function can be used to determine the before-tax cost of debt as follows:
=rate(nper,pmt,-pv,fv)
nper=number of semiannual coupons in the remaining 20 years=20*2=40
pmt=semiannual coupon=$45
pv=current amrket price= $896.87
fv=face value=$1000
=rate(40,45,-896.87,1000)=5.11%
5.11% is the semiannual yield
yield to maturity=5.11%*2=10.22%
after-tax cost of debt=pretax cost debt*(1-tax rate)
tax rate=25%
after-tax cost of debt=10.22%*(1-25%)=7.67%