In this study I used the case of the Mitsubishi UFJ Group to analysis the difference
of profits in the financial statements between the equity pooling method and the
purchase method. During the business combination Mitsubishi UFJ Financial Group,
prepared two types of financial statements based on Japanese GAAP (equity pooling
method) and US GAAP (purchase method).There is a clear differences in market
capitalization resulting from different accounting method. I also proposed to evaluate
all assets at market prices as a modified purchase method and suppose to use the
change in market capitalization in one accounting period to represent the modified
purchase method profit. Using market price makes the modified purchase method is a
theory in which financial information after a business combination is complete and does
not cost because the past does not disappear. Analyzing 125 business combinations
announced in 2017, the change in market capitalization in one accounting period was
1.84 times the purchase method profit in total. And more than 70% of the cases where
the modified purchase method profit exceeds the purchase method profit. It proved that
revaluation at market prices can be expected to have a significant impact on profits. In
addition, it can be said that it is obvious that the existing purchase method does not
faithfully represent the economic substance only by performing market value
evaluation on one side. The conventional unreasonable theory that book value and
market value are mixed in one financial statement does not represent an economic
substance and is not suitable for current business combination accounting.