Answer:
After tax cost of debt = 6.40%
Step-by-step explanation:
Coupon rate = 5.54%
Years of maturity = 18
NPER = Years of maturity * 2 = 18 * 2 = 36
PMT = (Face value * Coupon rate) / 2 = (1,000 * 5.54%) / 2 = 27.7
Face value = $1,000
Price (PV) = $640
Rate (36, 27.2, -640, 1000) Using excel = 0.049246 = 4.92%
YTM = Rate * 2 = 4.92% * 2 = 0.098492 = 9.85%
Pre-tax csot of debt = 9.85%
After tax cost of debt = 9.85%* (1 - 0.35)
After tax cost of debt = 9.85% * 0.65
After tax cost of debt = 0.098492 * 0.65
After tax cost of debt = 0.0640198
After tax cost of debt = 6.40%