Answer: 5.14%
Explanation:
Best estimate of the after-tax cost of debt:
(1 - t) × kd is the yield on the bond which is calculated using the PV of annuity formula. So,equating the price & the PVs of coupons & PV of maturity value.
[tex]875 = (1000\times 0.03625) \times(\frac{1- (1+r)^{-40}}{r}) + \frac{1,000}{(1+r)^{40} }[/tex]
[tex]875 = 36.25 \times(\frac{1- (1+r)^{-40}}{r}) + \frac{1,000}{(1+r)^{40} }[/tex]
Therefore, the semi-annual (r) = 4.28%
Annual before tax cost of debt = 4.28 × 2
= 8.56%
So, after tax cost of debt = 8.56% × (1 - 40%)
= 5.14%