Answer:
7.52%
Explanation:
First and foremost ,the yield to maturity on the old issue is computed using the rate formula in excel as calculated below:
=rate(nper,pmt,-pv,fv)
the nper is the number of times the bond would pay annual coupon interest of $106,which is 20 times
pmt is the amount of annual coupon payment which is $106
pv is the current price of the bond at $860
fv is the face value of the bond at $1000
=rate(20,106,-860,1000)=12.54%
The yield to maturity on the new issue is 12.54% as well
after-tax cost of debt=pretax cost of debt*(1-t)
pretax cost of debt is yield to maturity of 12.54%
t is the tax rate of 40% or 0.4
after-tax cost of debt=12.54%
*(1-0.4)=7.52%
