Erotyquewhyspers 
I?ll use the Q2 quarterly report for Google, which is listed on the
NASDAQ as GOOG because the company only went public last year and it
dramatically changed the balance sheet. You can find the income
statement and balance sheet here:
Securities & Exchange Commission
Google Second Quarter 2005 (Quarter ended June 30, 2005)
http://www.sec.gov/Archives/edgar/data/1288776/000119312505168339/d10q.htm
WACC
======
The full weightedaverage costofcapital (WACC) for a firm is given by:
WACC = Rc (E/VL) + rD(1t)(D/VL)
where,
Rc: return on equity
E/VL: proportion of equity in total firm value
rD: debt or bond percentages
t: tax rate (expressed as a decimal; 40% = 0.40)
D/VL: proportion of debt in total firm value
Investopedia.com
?Weightedaverage costofcapital? (undated)
http://www.investopedia.com/terms/w/wacc.asp
DEBT AND EQUITY

Total shareholders? equity (E) is $3,953,857,000 (from the Balance
Sheet). The current portion of equipment leases are $291,000 ? and
there is no other debt on the balance sheet. (In fact, the company
earned $33.4 million on its cash balances.) The debt is so small
(D/VL is less than .0001) that it?s impact on these calculations will
be zero.
The tax rate, by the way, is calculated by using tax provision/net income:
For the six months:
Tax rate = $239,869,000 / $951,876,000 = 25.2%
In finance issues, tax rates are often below the U.S. corporate
maximum of 35% due to previous losses or investment tax credits.
Sometimes they?ll be slightly higher due to state taxes.
RETURN ON EQUITY

This is actually the mostdifficult portion of the calculation, as
Google is a fastgrowing company, with REVENUES growing by 95% in the
first six months of 2005 (compared to 2004) and income going up almost
400%. However, the mostconservative calculation of Rc would
annualize the $712 million in net income ? putting it at $1,424
million.
Rc = annual net income / total equity = $1,424 million / $3,954 million = 36.01%
Because this is an allequity firm (D/VL is effectively zero), that?s
you?re weightedaverage cost of capital.
DISCLAIMERS

1. Google?s net income is growing so fast that Rc will undoubtedly be
higher due to annual net income being higher than $1.424 billion.
2. There are alternate ways to calculate Rc using the capitalasset
pricing model, but this requires an estimate of stockmarket returns,
Google?s beta and Treasury bill rates. These are commonly used in
finance but seem to be outside the scope of your question. However,
if you?re interested in researching this further, again Investopedia
has an excellent summary:
Investopedia
CAPM (undated)
http://www.investopedia.com/terms/c/capm.asp
Google search strategy:
Weightedaverage costofcapital
Capitalasset pricing model
Your data used in the question appears outofdate, so it may be
contributing to confusion about Google's capitalization and WACC. If
there is any confusion, please let me know via a clarification request
before rating this Answer.
Best regards,
OmnivorousGA 
Clarification of Answer by
omnivorousga
on
10 Sep 2005 08:13 PDT
To answer your question: "Also, is one formula of WACC better than
another?" It really depends on what's being evaluated:
* are you an investor looking to see what the returns on purchasing
stock are likely to be?
* are you a Google finance person (or Google manager) trying to make
a decision whether or not to invest in a project?
* are you a Google finance manager or executive trying to evaluate
optimal strategy?
* are you a stock market analyst trying to estimate future value of the firm?
As an example, companies involved in leasing businesses  where
there's a steady, predictable cash flow  can use debt to reduce
their costofcapital. So, depending on the investment decision (and
competitive situation) Google's financial officer might choose to
raise money for a project using bonds.
As for different formulas  you often find a variety of ways of
estimating the costofcapital because a company isn't public. For
public companies, modern financial theory says "use the capitalasset
pricing model" because it's based on the stock market, which is
efficient in its pricing. However, even here there are problems 
most notably a prediction of what future market returns are going to
be.
I'd recently answered this question on WACC and you may be interested
in the assumptions behind using it (it's even longer than the
disclaimer section to your answer!) 
Google Answers
"Calculating Weighted Average Cost Of Capital," (OmnivorousGA, Aug. 12, 2005)
http://answers.google.com/answers/threadview?id=554492
Best regards,
OmnivorousGA
