Forecasting
Returns
The
challenge in valuation and corporate finance
is forecasting future returns on investments.
There is information in historical returns,
industry averages and in qualitative assessments
of the strategic advantages that a firm may
possess. At the end of the process, though,
we have to come up with expected returns for
the future. In this section, we consider some
practical tools for making this assessment
first in the near term - say the next 5 to
10 years - and then in the long term, potentially
forever.
Near
future
Looking
at the last section, there are clearly three
numbers that should feed into our forecasts
of future returns. The first is the return
that the firm has earned on its own investments
in the past, the second is the average return
across all firms in the sector and the third
is the cost of the capital or equity tied
up in the investments. There is no one template
that will work for all companies but the weights
that we attach to past returns, sector averages
and the cost of capital (equity) in determining
expected future returns on capital (equity)
will depend in large part on what we believe
underlies these returns. Companies can have
competitive advantages relative to the sector
that they operate, and sectors can have barriers
to entry that keep excess returns elevated.
We need to assess both levels of competitive
advantages to be able to forecast excess returns.
Table 12 summarizes suggested paths for different
assessments:

In
some cases, the length of the short term and
transition periods will be determined by the
fact that the competitive advantage has an
explicit life. For a company that earns a
high return on capital because it possesses
a patent with 6 years to expiration, the short
term will be 6 years, followed by transition
phase. In other cases, the judgment will be
more subjective and short term and transition
periods have to be defined, relative to how
long high growth is expected to last. With
a high growth period of ten years, we could
define short term to be about five years and
the transition phase to be the remaining five
years; with a four year growth period, the
short term would be two years and the transition
phase would be two years.