Similar to a stock market series, a company's expected earnings per share (EPS) can be determined as follows:
Formula 13.10
EPS_{stock}_{ market series}= [(sales)(operating margin)  depreciation  interest] x (1tax) 
Where:
Sales = sales per share of the estimated series determined through regression
OM = the operating margin is typically calculated as a percentage of sales
Depreciation = this is determined by either continuing the trend of the current depreciation or focusing on the expected capital expenditures and how that number relates to future dividends.
Interest = interest is determined by outstanding debt and the interest rate on that debt.
The inputs, however, are determined from specific company data.
Example: Calculate the EPS of a company
Assuming the following estimates for a company, sales per share = $50.00, OM = 20%, depreciation of $5.00, interest of $1.00 and a corporate tax rate of 40%, calculate the forecasted EPS of the company?
Answer:
EPS = [($50.00)(20%)  $5.00  $1.00](10.40) = $2.40 per share
Determining the Earnings Multiplier of a Company
Similar to a stock market series, a company's earnings multiplier can be determined as follows:
The price of the stock is simply divided by the earnings per share of the stock as follows:
Formula 13.9 (restated)
Earnings multiplier 
Example: Determining a company's earnings multiplier
With Newco's $0.25 dividend payout, an EPS of $1.00, calculate the stock's P/E ratio assuming 10% required return and 5% growth.
Answer:
P/E ratio = 0.25/1.00 = 5%
(0.100.05)

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