  We analyze the distribution of income and income tax of individuals in Japan
for the fiscal year 1998. From the rank-size plots we find that the accumulated
probability distribution of both data obey a power law with a Pareto exponent
very close to -2. We also present an analysis of the distribution of the debts
owed by bankrupt companies from 1997 to March, 2000, which is consistent with a
power law behavior with a Pareto exponent equal to -1. This power law is the
same as that of the income distribution of companies. Possible implications of
these findings for model building are discussed.
