For population aging, the pension payment as a percentage of Japan’s overall household income is rapidly increasing. Although the increase in public pension compensates for the significant decrease in working income, the individual inhabitant taxation base is continuing to shrink, because Japanese tax system grants generous income deduction to public pension. If public pensions retain their privileged tax treatment, Japan’s overall tax base will continue to erode, and prefectural and municipal governments soon will suffer serious declines in tax revenue. In addition, the continued graying of Japan’s population may widen already-worrisome differences in the fiscal conditions of regional governments.
This paper uses 12 years prefectural panel data to analyze the impact of population aging on the individual inhabitant taxation base, controlling the impact of recent economic stagnation and tax reforms. After that, necessary tax reforms are discussed.
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