Answer:
WACC = (weight of debt * cost of debt) + (weight of preferred stock * cost of preferred stock) + (weight of common stock * cost of common stock)
market value of debt = bonds outstanding * market price per bond
market value of preferred stock = shares outstanding * market price per share
market value of common stock = shares outstanding * market price per share
total market value = market value of debt + market value of preferred stock + market value of common stock
weight of debt = market value of debt / total market value
weight of preferred stock = market value of preferred stock / total market value
weight of common stock = market value of common stock / total market value
cost of equity = (next year dividend / net proceeds per share) + growth rate.
net proceeds per share = price of share - flotation cost
cost of preferred stock = (annual dividend / net proceeds per share)
after tax cost of debt = YTM of bond * (1 - tax rate)
YTM is calculated using RATE function in Excel with these inputs :
nper = 19*2 (19 years to maturity with 2 semiannual coupon payments each year)
pmt = 1000 * 5% / 2 (semiannual coupon payment = face value * annual coupon rate / 2. This is a positive figure as it is an inflow to the bondholder)
pv = -1097.60 (net proceeds per bond = bond price - flotation cost = $1120 - ($1120 * 2%) = $1097.60. This is a negative figure as it is an outflow to the buyer of the bond)
fv = 1000 (face value of the bond receivable on maturity. This is a positive figure as it is an inflow to the bondholder)
The RATE calculated is the semiannual YTM. To calculate the annual YTM, we multiply by 2.
after tax cost of debt = YTM * (1 - tax rate).
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