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Finally,
we can vary add a variation to Option 4 to try to mimic at the business
unit level what was proposed in Option 3 for the corporate level, i.e.,
a flat tax at the marginal rate with differences between cash and flat
taxes tracked in a tax deferral account. The problem, here, is we dont
know the cash tax payment incurred by a business unit. Therefore, we
need to adapt this adjustment to account for that deficient knowledge.
This treatment would require a schedule of
deferrals and pre-payments for certain classes of activity or for
certain assets that can create tax shields. For example, foreign sales
may be identified as a major category of tax generating benefits for a
particular business unit. It is fairly simple to estimate the foreign
tax credit associated with foreign sales, and this tax credit can then
be applied to the specific business. Or, if a business has significant
assets creating tax deferral through temporary differences, i.e., its
known EP expenses are lower than its tax-reported expenses,
then it might be worthwhile to track those differences for certain major
assets or class of assets. Any transactions or amortization outside of
those chosen for tracking would be left alone to get taxed at the flat
rate. At the extreme, if no assets or transactions were chosen for
special tracking, then the business unit tax would be the marginal tax
of Option 3.
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