Faculty Profiles - OKAMOTO Akira

Papers - OKAMOTO Akira

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日本の公的年金改革 Invited

岡本章

日本財政学会叢書『財政研究』（日韓特別セッション） 4 92 - 102 2008.10

少子高齢化と国民負担率 Invited

岡本章

橘木俊詔編著『政府の大きさと社会保障制度』第2章 67 - 94 2007.6

基礎年金・最低保障年金の分析 Invited

岡本章, 島俊彦

橘木俊詔編著『政府の大きさと社会保障制度』第4章 121 - 153 2007.6

国民の受益・負担と政府の大きさ Invited

橘木俊詔, 岡本章, 川出真清, 畑農鋭矢, 宮里尚三

橘木俊詔編著『政府の大きさと社会保障制度』第1章 31 - 66 2007.6

望ましい財源調達手段 Invited

橘木俊詔, 岡本章, 川出真清, 畑農鋭矢, 宮里尚三, 島俊彦, 石原章史

橘木俊詔編著『政府の大きさと社会保障制度』第3章 95 - 120 2007.6

少子高齢化と租税政策 Invited

岡本章

橘木俊詔編著『日本経済の実証分析』第5章 91 - 116 2007.3

An Optimal Rate of the National Burden in an Aging Japan Reviewed

Okamoto Akira

The Kyoto Economic Review 75 ( 1 ) 13 - 34 2006.6

Language：English Publisher：Graduate School of Economics, Kyoto University

This paper examines an optimal rate of the national burden to establish guidelines for fiscal reform in Japan’s graying society. The paper looks at Japanese tax and social security systems through an extended life-cycle general equilibrium simulation model. It explicitly considers the benefits that the government provides to households, which enables us to comprehensively evaluate the balance between benefits and burdens. Simulation results show that an optimal rate of the national burden is high when households put a great utility weight on the benefits coming from public services, and that it is low when the degree of publicness of government expenditure is high. The results also suggest that an optimal rate of the national burden would rise as Japan ages and may exceed 50% during the rapid aging of its population.<br>

DOI： 10.11179/ker.75.13

CiNii Article

CiNii Books

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Integration of tax and social security systems - On the financing methods of a public pension scheme in a pay-as-you-go system Invited

A Okamoto, T Tachibanaki

SOCIAL SECURITY REFORM IN ADVANCED COUNTRIES Chapter 7 132 - 160 2002

Language：English Publishing type：Research paper (international conference proceedings) Publisher：ROUTLEDGE

This chapter explores whether or not the contributions to public pension scheme in the pay-as-you-go system should be substituted by general taxes, e.g. a progressive labor income tax or a consumption tax. The chapter also investigates whether or not such possible integration of tax and social security systems is desirable from the aspects of both efficiency and equity. To analyze the problem, we adopt an extended lifecycle general equilibrium model of overlapping generations with heterogeneity in the ability of labor supply, using the household expenditure survey data. The simulation results indicate that a progressive expenditure tax with full integration is the most desirable policy.

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