Adjusting
Capital for Extraordinary items
Consider
a firm that invests $ 10 billion in an asset
that generates only a half a billion in after-tax
operating income on a continuing basis. The
computed return on capital for this asset
is 5%, reflecting its mediocrity as an investment.
However, let us assume that this firm decides
to write off half the investment, reducing
capital invested to $ 5 billion. The return
on capital, using the updated invested capital
number, is now 10% but the quality of the
investment has not changed.
In
practice, there are a number of ways in which
firms can reduce their reported capital. They
can take restructuring charges and report
one-time expenses or report that their assets
have "impaired value". With the trends towards
"fair value" accounting, they can even mark
assets to the market and reduce their reported
value. While there are accounting rules that
govern each of these transactions, there is
enough leeway within these rules to allow
aggressive firms to decrease the "invested
capital" base and increase the returns on
equity and capital.
To
counter this, we should be adjusting the reported
capital base for actions taken by the firm
to reduce that base. Making this adjustment,
though, is much more difficult to do than
adjusting earnings, since the effect on capital
is a cumulated effect: all restructuring charges,
taken over time, by the firm, affect the current
capital invested. Thus, we have to start with
capital invested currently and add back charges
made over time to this capital. The older
the firm, the more complicated this process
will undoubtedly become.
Dividends
and Stock Buybacks
When
a firm pays dividends or buys back stock,
it reduces its book value of equity by the
amount of the dividend or stock buyback, and
can affect its net income, to the extent that
the cash used to pay the dividend or buy back
stock generated income in prior periods. Consequently,
dividends and stock buybacks can affect the
returns on equity of the firms involved. In
general, the return on equity of a firm that
pays a large dividend or buys back stock will
increase after the transaction because the
book value of equity will decrease disproportionately,
relative to the net income. Consider, for
instance, a firm that reports net income of
$ 10 million on book value of equity of $
100 million.

Assume
that the firm has a $ 20 million cash balance
on which it earns after-tax interest income
of $ 1 million. Using this cash to buy back
stock or pay a dividend will reduce net income
by $ 1 million and book value of equity by
$ 20 million, resulting in a return on equity
of 11.25%:

The
effect on return on invested capital and non-cash
return on equity will be muted or non-existent
because those returns are computed only on
the invested capital n operating assets. Thus,
using cash to buy back stock has no effect
on either after-tax operating income or invested
capital. The same can be said about borrowing
the money needed to fund the dividends/buyback.
In
practice, the effects that dividends and buybacks
have on returns on equity can be viewed as
an argument for using return on invested capital
or non-cash return on equity to judge firms
that frequently buy back stock or pay large
dividends. However, in the long term, even
the return on capital and non-cash return
on equity can be affected by stock buybacks,
especially at firms where the market value
of equity is significantly higher than the
book value of equity.