Updated on 2022/03/10

写真a

 
TAMAI, Toshiki
 
Organization
Graduate School of Economics Department of Socio-Economic System Analysis on Markets and Institutions Professor
Graduate School
Graduate School of Economics
Undergraduate School
School of Economics Department of Economics
Title
Professor

Degree 1

  1. The Degree of Doctor of Economics ( 2006.3   Nagoya University ) 

Research Interests 5

  1. Economic Growth

  2. Tax Competition

  3. Public Capital

  4. Public Goods

  5. Fiscal Policy

Research Areas 1

  1. Humanities & Social Sciences / Public economics and labor economics  / Public Economics

Current Research Project and SDGs 1

  1. Public Capital Accumulation and Economic Growth

Research History 5

  1. Nagoya University   Graduate School of Economics Department of Socio-Economic System Analysis on Markets and Institutions   Associate professor

    2016.4

  2. Kinki University   Faculty of Economics   Associate professor

    2010.4 - 2016.3

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    Country:Japan

  3. Kinki University   Faculty of Economics   Lecturer

    2008.4 - 2010.3

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    Country:Japan

  4. Nagoya University   Graduate School of Economics Department of Socio-Economic System   Assistant Professor

    2007.4 - 2008.3

  5. Nagoya University   Graduate School of Economics   Research Fellow

    2006.4 - 2007.3

Education 3

  1. Nagoya University   Graduate School, Division of Economics

    2003.4 - 2006.3

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    Country: Japan

  2. Nagoya University   Graduate School, Division of Economics

    2001.4 - 2003.3

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    Country: Japan

  3. Nagoya University   Faculty of Economics

    1997.4 - 2001.3

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    Country: Japan

Professional Memberships 4

  1. Japanese Economic Association

  2. 日本応用経済学会

  3. Association for Public Economic Theory

  4. International Institute of Public Finance

Committee Memberships 3

  1. 愛知県県営鳴海住宅PFI事業者選定委員会   委員  

    2020.5 - 2021.3   

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    Committee type:Municipal

  2. 愛知県県営野波住宅PFI事業者選定委員会   委員  

    2019.5 - 2021.3   

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    Committee type:Municipal

  3. 日本応用経済学会   学会誌編集委員  

    2018.12 - 2020.11   

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    Committee type:Academic society

Awards 1

  1. 日本応用経済学会奨励賞

    2009.11   日本応用経済学会  

    玉井 寿樹

 

Papers 32

  1. Unemployment, tax competition, and tax transfer policy Reviewed International coauthorship

    Tamai Toshiki, Myles Gareth

    JOURNAL OF PUBLIC ECONOMIC THEORY     2021.12

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Journal of Public Economic Theory  

    The reduction of capital tax rates witnessed over the past two decades has been motivated by the wish to boost investment and reduce unemployment. Previous models of tax competition have explored the consequences for capital allocation in great detail, but have mostly been silent on the employment effects due to the assumption of a perfect labor market. To address the impact of tax competition on employment and public good provision, this paper reconsiders the analysis in the presence of a labor market imperfection that generates unemployment. We incorporate a wage rigidity and intergovernmental transfers financed by the labor income tax into the standard tax competition model to explore the outcome of federal–state policy interaction. The key factors in determining the efficiency are the capital–labor substitutability/complementary and the cost of the efficient level of public good supply relative to the ability of the labor income to generate revenue. When the labor income tax is insufficient for financing, there can only be efficiency if the aggregate externality is negative—but this outcome is only one of multiple equilibria. We also show that federal government leadership is effective to provide public goods efficiently by state governments if capital and labor are substitutes.

    DOI: 10.1111/jpet.12563

    Web of Science

    Scopus

  2. Tax Competition, Economic Growth, and Social Welfare

    国際経済政策研究センターディスカッションペーパー     2021.2

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    Language:English   Publishing type:Research paper (bulletin of university, research institution)  

  3. Economic growth, equilibrium welfare, and public goods provision with intergenerational altruism Reviewed

    Tamai T.

    European Journal of Political Economy     2021

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:European Journal of Political Economy  

    This study examines the government policy of public goods provision and its effects on economic growth and welfare under intergenerational altruism. The study considers an endogenous growth model with altruistic overlapping generations. The preferences of the current youth exhibit a future bias, and thus, democratically elected governments are subject to this future bias. The optimal rule for the supply of public goods under future bias differs from the original Samuelson rule. Unlike the standard growth model without any bias, under the optimal rule, the equilibrium growth rate is not independent of government size. Future bias gives young generations the dynamic incentives to invest more. With future bias, the intergenerational redistributive effects of public goods stimulate such incentives under certain conditions. Hence, the government size affects the economic growth through intertemporal changes in their resource allocations. Moreover, the growth effect of the government size provides nontrivial outcomes of welfare analysis. Our numerical analyses show the growth and welfare superiority of the democratic governments to the nonbiased social planner.

    DOI: 10.1016/j.ejpoleco.2021.102068

    Scopus

  4. Public capital, economic growth, and welfare in an endogenous growth model with the weakest-link externality

    Toshiki Tamai

    経済科学   Vol. 68 ( 2-3 ) page: 1 - 9   2020.12

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    Language:English   Publishing type:Research paper (bulletin of university, research institution)  

  5. Nash Equilibria in Models of Fiscal Competition with Unemployment

    Toshiki Tamai, Kikuchi Yuya

    国際経済政策研究センターディスカッションペーパー     2020.11

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    Language:English   Publishing type:Research paper (bulletin of university, research institution)  

  6. Public Investment, National Debt, and Economic Growth: The Role of Debt Finance under Dynamic Inefficiency

    Toshiki Tamai, Akira Kamiguchi

    国際経済政策研究センターディスカッションペーパー     2020.9

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    Language:English   Publishing type:Research paper (bulletin of university, research institution)  

  7. Capital market integration and fiscal sustainability

    Miyazawa Kazutoshi, Ogawa Hikaru, Tamai Toshiki

    EUROPEAN ECONOMIC REVIEW   Vol. 120   2019.11

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:European Economic Review  

    By constructing a two-country endogenous growth model with a debt-financing government, this paper studies the relationship between the sustainability of public finance and increases in inter-regional factor mobility. To this end, it identifies the minimum tax rate that ensures fiscal sustainability against the backdrop of capital tax competition and studies whether competition for mobile capital lowers or improves fiscal sustainability. The main findings are as follows: (i) when countries are symmetric, increasing capital flows promotes economic growth through the expansion of Romer-type knowledge spillovers, resulting in increased fiscal sustainability in all countries; and (ii) when a marked difference exists between countries, tax competition caused by capital movements might lower fiscal sustainability in a country with abundant capital and large outstanding debt.

    DOI: 10.1016/j.euroecorev.2019.103305

    Web of Science

    Scopus

  8. Tax competition, unemployment, and intergovernmental transfers Reviewed

    Kikuchi Yuya, Tamai Toshiki

    International Tax and Public Finance   Vol. 26 ( 4 ) page: 899 - 918   2019.8

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s10797-019-09533-0

    Web of Science

    Scopus

  9. Public investment, public debt, and population aging under the golden rule of public finance Reviewed

    Akira Kamiguchi, Toshiki Tamai

    Journal of Macroeconomics   Vol. 60   page: 110 - 122   2019.6

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jmacro.2019.01.011

    Web of Science

    Scopus

  10. A note on fiscal policy, indeterminacy, and endogenous time preference Reviewed

    Tamai Toshiki

    ECONOMICS BULLETIN   Vol. 39 ( 1 ) page: 615-625   2019

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    Web of Science

  11. Dynamic provision of public goods under uncertainty Reviewed

    Toshiki Tamai

    Economic Modelling   Vol. 68   page: 409 - 415   2018.1

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier B.V.  

    This study investigates the private provision of public goods under uncertainty using a general dynamic equilibrium model with stochastic disturbances. In particular, the model incorporates income shocks governed by a Wiener process with a mean of zero and standard deviation of unity as uncertainty. We analyze how uncertainty and population size affect the supply of public goods. Dynamic analysis shows the importance of attitude toward risk and a contrast between short-run and long-run responses to increases in uncertainty and population size. Results show that under specified conditions, escalating uncertainty reduces the long-run contributions to public goods through the stochastic accumulation of capital but it raises short-run contributions. The average contribution increases to a positive finite value by increasing the population to a certain level, but it declines toward zero if the population size is infinite. These twin results are based on the dynamic behaviors of risk-averse individuals responding to elevated risks.

    DOI: 10.1016/j.econmod.2017.08.008

    Web of Science

    Scopus

  12. Public investment, the rate of return, and optimal fiscal policy in a stochastically growing economy

    Toshiki Tamai

    JOURNAL OF MACROECONOMICS   Vol. 49   page: 1 - 17   2016.9

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCIENCE BV  

    This study examines the optimal fiscal policy in a stochastic endogenous growth model with private and public capital. The government is willing to actualize a socially optimal equilibrium using a lump-sum tax and government debt linked to public investments, subject to the budget constraint under the golden rule of public finance. A socially optimal fiscal policy states that a deterministic rate of return on government bonds sets the marginal product of public capital. Moreover, public investments optimally adjust the ratio of private capital to public capital to equate the rates of return on such capital. The presence of stochastic disturbances results in a disparity between the optimal marginal products of the two types of capital, as reported in previous empirical studies. This disparity significantly affects the socially optimal growth rate in response to investment risk. (C) 2016 Elsevier Inc. All rights reserved.

    DOI: 10.1016/j.jmacro.2016.04.006

    Web of Science

    Scopus

  13. Who gains from capital market integration? Tax competition between unionized and non-unionized countries

    Hikaru Ogawa, Yasuhiro Sato, Toshiki Tamai

    CANADIAN JOURNAL OF ECONOMICS-REVUE CANADIENNE D ECONOMIQUE   Vol. 49 ( 1 ) page: 76 - 110   2016.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:WILEY  

    The welfare effects of capital market integration are examined under a model of tax competition with two asymmetric countries. The asymmetry is expressed through the labour market: one country has a perfect labour market whereas the other country's labour market is unionized. Our results indicate that the welfare effects of capital market integration differ depending on whether governments are active or passive in attracting capital. In the absence of active governments, capital market integration benefits the country with a competitive labour market whereas it harms the unionized country. Capital market integration benefits both countries if governments are active and compete for mobile capital using taxes/subsidies.

    DOI: 10.1111/caje.12191

    Web of Science

    Scopus

  14. Public capital, deficit financing, and economic growth in a stochastic economy Reviewed

    Tamai Toshiki

    Journal of Macroeconomics   Vol. 42   page: 14 - 26   2014.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1016/j.jmacro.2014.06.006

  15. The macroeconomic effects of fiscal policy in a stochastically growing economy Reviewed

    Tamai Toshiki

    Economic Modelling   Vol. 35   page: 464 - 471   2013.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1016/j.econmod.2013.08.001

  16. Are fiscal sustainability and stable balanced-growth equilibrium simultaneously attainable? Reviewed

    Akira Kamiguchi, Toshiki Tamai

    Metroeconomica   Vol. 63 ( 3 ) page: 443 - 457   2012.6

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    Language:English   Publishing type:Research paper (scientific journal)  

  17. Can productive government spending be a source of equilibrium indeterminacy? Reviewed

    Akira Kamiguchi, Toshiki Tamai

    Economic Modelling   Vol. 28 ( 3 ) page: 1335 - 1340   2011.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1016/j.econmod.2011.01.014

  18. Public goods provision, redistributive taxation, and wealth accumulation Reviewed

    Tamai Toshiki

    Journal of Public Economics   Vol. 94 ( 11-12 ) page: 1067 - 1072   2010.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1016/j.jpubeco.2010.06.019

  19. Inequality, unemployment, and endogenous growth in a political economy with a minimum wage Reviewed

    Tamai Toshiki

    Journal of Economics   Vol. 97 ( 3 ) page: 217 - 232   2009.7

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    Language:English   Publishing type:Research paper (scientific journal)  

  20. PUBLIC CAPITAL, TAXATION AND ENDOGENOUS GROWTH IN A FINITE HORIZONS MODEL Reviewed

    Toshiki Tamai

    METROECONOMICA   Vol. 60 ( 1 ) page: 179 - 196   2009.2

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:WILEY-BLACKWELL PUBLISHING, INC  

    This paper presents development of an endogenously growing finite horizons model with public capital, and investigates macroeconomic effects of fiscal policy and a change in life expectancy. Specifically regarding novel results, a growth-maximizing income tax rate exists that is less than the elasticity of public capital to output. In addition, in the model with income tax financing, there might exist an inverted-U-shaped relationship between life expectancy and growth, which is consistent with some empirical evidence. In this paper, we elucidate the interaction among public capital accumulation, taxes, growth, welfare and life expectancy.

    DOI: 10.1111/j.1467-999X.2008.00339.x

    Web of Science

  21. Variety of products, public capital, and endogenous growth Reviewed

    Toshiki Tamai

    ECONOMIC MODELLING   Vol. 26 ( 1 ) page: 251 - 255   2009.1

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCIENCE BV  

    This paper develops an extension of the endogenous growth model with variety expansion presented in Romer [Romer, P.M., 1990. Endogenous technical change. Journal of Political Economy 98, part 2, S71-S102] by considering public capital accumulation. Characterizing the transitional dynamics, the growth rate of consumption traces (and available number of intermediate goods also might trace) ail S-shaped converging path to the equilibrium growth rate, similar to a logistic growth Curve, if the intensity of public capital is sufficiently high. We also show that public investment enhances economic growth because it stimulates demand for intermediate goods and raises the market interest rate. (C) 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.econmod.2008.07.003

    Web of Science

  22. Dynamic analysis on public investment policies in an endogenous growth model Reviewed

    Tamai Toshiki

    Studies in Applied Economics   Vol. 3   page: 157-165   2009

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    Language:English   Publishing type:Research paper (scientific journal)  

  23. Employment, fiscal policy, and oligopsonistic labour market Reviewed

    Tamai Toshiki

    Australian Journal of Labour Economics   Vol. 12 ( 3 ) page: 321-337   2009

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    Language:English   Publishing type:Research paper (scientific journal)  

  24. Fiscal and Monetary Policy in an Endogenous Growth Model with Public Capital Reviewed

    Toshiki Tamai

    FINANZARCHIV   Vol. 64 ( 4 ) page: 403 - 421   2008.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:MOHR SIEBECK  

    This paper develops an endogenous growth model in which the government finances its public investment using both income taxation and seigniorage. Arguments presented in this paper show that public investment financed by seigniorage gradually pulls up the growth rate of consumption and overshoots the inflation rate. Furthermore, we show that public investment financed by an income tax brings about an overshooting of the inflation rate and a simultaneous undershooting of the growth rate of consumption. These dynamic effects influence welfare dynamics. Taking account of transitional effects, we derive the welfare effects of fiscal and monetary policy.

    DOI: 10.1628/001522108X397606

    Web of Science

  25. A note on the dynamic analysis of fiscal competition

    Tamai Toshiki

    URBAN STUDIES   Vol. 45 ( 3 ) page: 651 - 657   2008.3

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Urban Studies  

    This note presents an analysis of dynamic aspects of fiscal competition in a model with local capital accumulation. This shows that, even when a head tax is available, the optimal capital tax rate is generally non-zero. In addition, a decentralised equilibrium without a head tax might be characterised by overprovision of local public goods in a dynamic fiscal competition model. The source of inefficiency is overaccumulation of local capital. © 2008 Urban Studies Journal Limited.

    DOI: 10.1177/0042098007087339

    Web of Science

    Scopus

  26. Optimal fiscal policy in an endogenous growth model with public capital: a note

    Tamai T.

    JOURNAL OF ECONOMICS   Vol. 93 ( 1 ) page: 81 - 93   2008.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Journal of Economics/ Zeitschrift fur Nationalokonomie  

    This note presents an investigation of the optimal tax rule in endogenous growth models with public capital. It is presumed that the government levies only an income tax in addition to financing public investment. Furthermore, a household's saving is deducted from the income tax. We find the optimal tax rule whereby the social optimum is attainable. The manner by which a government imposes a tax on income and administers tax deductions is important for attaining a socially optimal situation. © 2007 Springer-Verlag.

    DOI: 10.1007/s00712-007-0287-x

    Web of Science

    Scopus

  27. Public intermediate goods, endogenous growth, and indeterminacy

    Tamai Toshiki

    ECONOMIC MODELLING   Vol. 24 ( 4 ) page: 683 - 689   2007.7

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Economic Modelling  

    This paper presents analysis of indeterminacy and endogenous growth in a simple one-sector model of capital accumulation, in which the presence of public intermediate goods creates a positive externality in the production of final goods. In our model, public intermediate goods are assumed to be a stock variable (similar to public capital goods). According to the existence of public intermediate goods, the model generates transitional dynamics and then the intertemporal elasticity of substitution that is particularly critical to local indeterminacy. The possibility of indeterminacy is demonstrably consistent with plausible parameter values. © 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.econmod.2007.01.003

    Web of Science

    Scopus

  28. Tax Competition, Capital Taxation, and Capital Accumulation

    Tamai T.

    Studies in Regional Science   Vol. 37 ( 3 ) page: 739 - 747   2007

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Studies in Regional Science  

    This paper investigates the consequences of tax competition in a simple dynamic model. Because capital accumulation is allowed the standard conclusions of the tax competition literature were generalized in the dynamic model. First, we showed that the capital tax rate chosen by jurisdictional governments is not zero even when head taxes on immobile residents are available. Second, a decentralized economy may be characterized by an overprovision of local public goods. Finally, capital tax competition brings about not only over accumulation of capital stock but also under accumulation of capital stock. © 2007, JAPAN SECTION OF THE REGIONAL SCIENCE ASSOCIATION INTERNATIONAL. All rights reserved.

    DOI: 10.2457/srs.37.739

    Scopus

  29. Tax competition, capital taxation, and capital accumulation Reviewed

    Tamai Toshiki

    Studies in Regional Science   Vol. 37 ( 3 ) page: 739-747   2007

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    Language:English   Publishing type:Research paper (scientific journal)  

  30. Endogenous market structure and fiscal policy in an endogenous growth model with public capital

    Tamai T.

    Economics Bulletin   Vol. 15 ( 1 )   2006.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Economics Bulletin  

    This paper develops an endogenous growth model with public capital and imperfect competition. In the model, we take into account monopolistic competition of intermidiate sector and endogenous determination of the number of firms in the sector by considering the fixed cost to keep production going. We show that the number of firms in intermidiate sector is affected by fiscal policy. Furthermore, it is demonstrated in the paper that market structure plays a key role in reducing the growth-maximizing tax rate.

    Scopus

  31. Fiscal policy and adjustment costs of private investment in an endogenous growth model with public capital

    Tamai Toshiki

    FINANZARCHIV   Vol. 62 ( 4 ) page: 455 - 470   2006.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:FinanzArchiv  

    This paper develops an endogenous growth model with public capital and examines the growth and welfare effects of a fiscal policy that is financed by corporate taxation. In the model, we incorporate the investment decision-making of competitive firms by considering the adjustment costs of private investment. We show that there arises an indeterminacy of the balanced growth path. Furthermore, it is demonstrated that growth-maximizing policy is not equivalent to welfare-maximizing policy on the balanced growth path. © 2006 Mohr Siebeck.

    DOI: 10.1628/001522106X172652

    Web of Science

    Scopus

  32. A note on unemployment and capital tax competition Reviewed

    Hikaru Ogawa, Yasuhiro Sato, Toshiki Tamai

    JOURNAL OF URBAN ECONOMICS   Vol. 60 ( 2 ) page: 350 - 356   2006.9

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:ACADEMIC PRESS INC ELSEVIER SCIENCE  

    We introduce a labor market imperfection into the capital tax competition literature to study the equilibrium tax formulae and their efficiency in the presence of unemployment. Since we allow for labor market imperfection, the standard conclusions of the tax competition literature would be generalized in the case of non-full employment. Our first result shows that even when head taxes on immobile residents are available, the optimal capital tax rate for jurisdictional governments is not zero. Our second finding is that decentralized equilibrium might be characterized by the overprovision of local public goods when the labor market is imperfect. (c) 2006 Elsevier Inc. All rights reserved.

    DOI: 10.1016/j.jue.2005.07.002

    Web of Science

    Scopus

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MISC 7

  1. Dynamic provision of public goods under uncertainty

    Tamai Toshiki

    ECONOMIC MODELLING   Vol. 68   page: 409-415   2018.1

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    Language:English   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)  

    DOI: 10.1016/j.econmod.2017.08.008

  2. Public investment, the rate of return, and optimal fiscal policy in a stochastically growing economy Reviewed

    Tamai Toshiki

    JOURNAL OF MACROECONOMICS   Vol. 49   page: 1-17   2016.9

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    Language:English   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)  

    DOI: 10.1016/j.jmacro.2016.04.006

  3. Who gains from capital market integration? Tax competition between unionized and non-unionized countries Reviewed

    Ogawa Hikaru, Sato Yasuhiro, Tamai Toshiki

    CANADIAN JOURNAL OF ECONOMICS-REVUE CANADIENNE D ECONOMIQUE   Vol. 49 ( 1 ) page: 76-110   2016.2

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    Language:English   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)  

    DOI: 10.1111/caje.12191

  4. Variety of products, public capital, and endogenous growth Reviewed

    Toshiki Tamai

    Economic Modelling   Vol. 26 ( 1 ) page: 251 - 255   2009.1

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    Language:English   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)  

    This paper develops an extension of the endogenous growth model with variety expansion presented in Romer [Romer, P.M., 1990. Endogenous technical change, Journal of Political Economy 98, part 2, S71-S102] by considering public capital accumulation. Characterizing the transitional dynamics, the growth rate of consumption traces (and available number of intermediate goods also might trace) an S-shaped converging path to the equilibrium growth rate, similar to a logistic growth curve, if the intensity of public capital is sufficiently high. We also show that public investment enhances economic growth because it stimulates demand for intermediate goods and raises the market interest rate. © 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.econmod.2008.07.003

    Scopus

  5. Public capital, taxation and endogenous growth in a finite horizons model Reviewed

    Toshiki Tamai

    Metroeconomica   Vol. 60 ( 1 ) page: 179 - 196   2009

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    Language:English   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)  

    This paper presents development of an endogenously growing finite horizons model with public capital, and investigates macroeconomic effects of fiscal policy and a change in life expectancy. Specifically regarding novel results, a growth-maximizing income tax rate exists that is less than the elasticity of public capital to output. In addition, in the model with income tax financing, there might exist an inverted-U-shaped relationship between life expectancy and growth, which is consistent with some empirical evidence. In this paper, we elucidate the interaction among public capital accumulation, taxes, growth, welfare and life expectancy. © 2008 Blackwell Publishing Ltd.

    DOI: 10.1111/j.1467-999X.2008.00339.x

    Scopus

  6. Fiscal and monetary policy in an endogenous growth model with public capital Reviewed

    Toshiki Tamai

    FinanzArchiv   Vol. 64 ( 4 ) page: 403 - 421   2008

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    Language:English   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)  

    This paper develops an endogenous growth model in which the government finances its public investment using both income taxation and seigniorage. Arguments presented in this paper show that public investment financed by seigniorage gradually pulls up the growth rate of consumption and overshoots the inflation rate. Furthermore, we show that public investment financed by an income tax brings about an overshooting of the inflation rate and a simultaneous undershooting of the growth rate of consumption. These dynamic effects influence welfare dynamics. Taking account of transitional effects, we derive the welfare effects of fiscal and monetary policy. © 2008 Mohr Siebeck.

    DOI: 10.1628/001522108X397606

    Scopus

  7. A note on unemployment and capital tax competition Reviewed

    Ogawa Hikaru, Sato Yasuhiro, Tamai Toshiki

    JOURNAL OF URBAN ECONOMICS   Vol. 60 ( 2 ) page: 350-356   2006.9

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    Language:English   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)  

    DOI: 10.1016/j.jue.2005.07.002

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Presentations 21

  1. Nash equilibria in models of fiscal competition with unemployment International conference

    Toshiki Tamai

    2020 Annual Conference of International Insutitution of Public Finance  2020.8 

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    Event date: 2020.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Online  

  2. Deficit-financed public investment, economic growth, and welfare in an overlapping generations model International conference

    Akira Kamiguchi, Toshiki Tamai

    2019.7 

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    Event date: 2019.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:ストラスブール大学   Country:France  

  3. Tax competition, unemployment, and intergovernmental transfers Invited

    Toshiki Tamai

    六甲フォーラム  神戸大学大学院経済学研究科

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    Event date: 2017.11

    Language:English   Presentation type:Public lecture, seminar, tutorial, course, or other speech  

  4. Public investment and golden rule of public finance in an overlapping generations model International conference

    Kamiguchi Akira, Tamai Toshiki

    2017 Annual Conference of Association for Public Economic Theory 

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    Event date: 2017.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Université Panthéon-Assas Paris II   Country:France  

  5. Public investment and golden rule of public finance in an overlapping generations model Invited

    Tamai Toshiki

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    Event date: 2017.2

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  6. 公的資本と経済成長 Invited

    玉井 寿樹

    日本応用経済学会秋季大会 

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    Event date: 2016.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:慶應義塾大学   Country:Japan  

  7. Long-run growth and welfare in an endogenous growth model with productive public goods and spillover effects Invited International conference

    Tamai Toshiki

    Workshop on Macroeconomics 

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    Event date: 2016.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  8. Regional infrastructure and economic growth International conference

    Kitaura Koji, Tamai Toshiki

    2015 Annual Conference of Association for Public Economic Theory 

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    Event date: 2015.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:University of Luxembourg   Country:Luxembourg  

  9. Regional infrastructure and economic growth Invited

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    Event date: 2015.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  10. Public capital, capacity utilization and economic growth Invited

    Tamai Toshiki

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    Event date: 2014.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  11. The macroeconomic effects of fiscal policy in a stochastically growing economy International conference

    Tamai Toshiki

    Workshop in Economics of Production and Distribution 

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    Event date: 2013.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Clare Hall College, University of Cambridge   Country:United Kingdom  

  12. Are fiscal sustainability and stable balanced-growth equilibrium simultaneously attainable? Invited

    Tamai Toshiki

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    Event date: 2011.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  13. Are fiscal sustainability and stable balanced-growth equilibrium simultaneously attainable? Invited

    Tamai Toshiki

    Conference on public economics and macroeconomics 

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    Event date: 2010.10

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  14. Distortionary taxation, balanced-budget rules, and macroeconomic (in)stability

    Tamai Toshiki

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    Event date: 2009.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  15. Dynamic analysis on public investment policies in an endogenous growth model

    Tamai Toshiki

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    Event date: 2008.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  16. A simple model of dynamic tax competition

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    Event date: 2006.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  17. Fiscal and monetary policy in an endogenous growth model with public capital

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    Event date: 2006.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  18. Fiscal policy in a two-sector endogenous growth model

    Tamai Toshiki

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    Event date: 2005.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Chuo University   Country:Japan  

  19. Unemployment and capital tax competition International conference

    Tamai Toshiki

    61st Congress of the International Institute of Public Finance 

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    Event date: 2005.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  20. Endogenous growth model with public capital for consumers and producers

    Tamai Toshiki

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    Event date: 2003.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  21. Longevity, altruism, and endogenous growth

    Tamai Toshiki

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    Event date: 2003.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Oita University   Country:Japan  

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KAKENHI (Grants-in-Aid for Scientific Research) 8

  1. Dynamics of Global Economy with Infrastructure Development and Institutional Design

    Grant number:20H01492  2020.4 - 2024.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship:Coinvestigator(s)  Grant type:Competitive

  2. 人口減少社会における世代間の自助・共助に関する研究

    Grant number:18H00865  2018.4 - 2022.3

    科学研究費助成事業  基盤研究(B)

    黒田 達朗, 宮澤 和俊, 玉井 寿樹, 相浦 洋志

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    Authorship:Coinvestigator(s)  Grant type:Competitive

    本年度は、昨年度に引き続き、近年のわが国の人口動態等に関する資料を調べた。特に、注目すべき現象としては、相変わらず東京大都市圏への一極集中が続いている中で、例えば愛知、静岡等の東海地方から20代前後の女性が東京への大幅な流出超過していることが挙げられる。この原因としては、いくつかの理由が推測されているが、まだ統計的に十分な解明には至っていない。基本的に東海地方は自動車産業に代表される製造業が主たる産業であり、首都圏に比べて企業の本社ひいては管理部門が少なく、サービス業に種類も圧倒的に少ない。戦後の歴史的にも新たな地域格差の要因となるだけでなく、本研究の課題である世代間の共助等にも影響を及ぼす可能性がある。
    昨年も指摘した自動車の自動運転の進捗やその影響についても、黒田(2019)で研究成果を公表した。とくに、高齢者の居住地域選択の自由度が高まるので、世代間の共助にも影響を与えると思われる。
    理論的な分野については、宮澤が高齢者への権限付与による人口変化等の世代重複的な影響に関する研究をAssociation for Public Economic Theory (2019)で報告した。玉井は高齢化と財政赤字の関係をKamiguchi and Tamai (2019)で公刊した。また、相浦はAiura (2019)において、高齢化社会において重要な課題となる医療の越境サービスの財政的課題を分析した。
    黒田と宮澤は、引き続き、わが国の労働市場で課題となっている高齢者の労働期間の伸びが、出生率や孫世代の育児補助へ与える影響などを検討するための世代重複モデルの試作を続けている。本来は年度末に研究メンバーが参加した研究会を開き、共同研究を進める予定であったが、2月以降新型コロナウィルスの影響で開催できなったので、今秋以降に行う予定である。
    上記の研究実績の概要にも記したように、とくに理論的な研究に関しては個々に各メンバーが関連する研究を進めて公表している。ただし、黒田と宮澤を中心に開発中の居住地の世代別選択を考慮したモデルに関しては、長期の収束に関して明示的な解が得られない場合があり、まだ解決できていない。今後は、メンバー間での議論を一層進めながら、研究目的に可能な限り近い理論的研究の遂行を目指している。
    同様に、上記のように、女性の地域間移動やM字カーブなど年齢に依存した労働供給について、データ等の収集を行うとともに、理論モデルへの反映も検討したい。
    住宅の遺贈等も世代間の自助・共助に関連するが、慶応義塾大学や日本大学の研究者を中心に相続税改訂の影響などについて統計的な検証も行われており、これらも参考に本研究で予定しているシミュレーション分析の対象とする政策の具体的候補を抽出したい。
    理論的研究に関しては、上記のように研究の基本的目的である世代間の居住地選択を中心とした自助・共助の分析について明示的な解が得られるモデルを最終的に構築する必要がある。上記のように試作的なモデルは、まだ安定的な解を得るに至っていないので、今後は新型コロナウィルスの終息を待って、研究グループのメンバーを中心に意見交換する機会をより多く設けたい。メンバー各自は、上記の実績を見てもわかるように、得意とするアプローチや分析手法も違っているので、討論や議論をより進めることで改善を進めたい。
    より実証的なデータに基づいたシミュレーション分析に関しては、その参考となるようなマイクロデータの存在についても今後確認したい。
    研究実績の概要にも記したように、本研究にも深く関係する研究テーマで、メンバー各自は以前より個別の研究を進めてきており、それらについて本年度も学会発表や学術誌への投稿を行うことにより、他の研究者からの意見や示唆を可能な限り獲得しながら、上記のような本研究の最終的な成果に活かしていきたい。

  3. Institutional Design for Provision of Public Goods(Fostering Joint International Research)

    Grant number:16KK0077  2017 - 2019

    Fund for the Promotion of Joint International Research (Fostering Joint International Research)

    TAMAI Toshiki

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\4810000 ( Direct Cost: \3700000 、 Indirect Cost:\1110000 )

    The research project aims to develop a modelling framework to investigate the efficiency of public goods provision by incorporating market imperfections, tax-transfer systems, and other relevant factors. The study demonstrates the best systems of taxation and fiscal transfer in order to resolve the underprovision of public goods under various realistic situations. In particular, the study focuses on the role of intergovernmental redistributive transfers. The models provide a good conceptual basis for analyzing the design of fiscal systems for providing public goods and will be valuable for policy makers.

  4. Studies on the role of infrastructure for sustainable development in developing countries

    Grant number:16H03625  2016.4 - 2020.3

    Koji Kitaura

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    Authorship:Coinvestigator(s)  Grant type:Competitive

    The outline of our research results is as follows. First, we have constructed a model that analyzes the impact of infrastructure, such as ports, on economic development. Second, when comparing to the cash transfer programs such as conditional cash transfer programs (CCTs)and unconditional cash transfer programs (UCTs) in various developing countries, we analyze how it affects the disparity of the countries. Finally, using a political economy approach, we analyzed why cash transfer programs differ between countries in Latin America and Sub-Saharan Africa.

  5. Optimal Provision of Public Goods under Uncertainty

    Grant number:16K03726  2016.4 - 2020.3

    TAMAI Toshiki

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\2600000 ( Direct Cost: \2000000 、 Indirect Cost:\600000 )

    The purposes of this study are to derive an optimal rule of public goods provision under uncertainty and to provide practical criteria for policy makers. In the study, we modeled mathematical frameworks of dynamic provision of public goods under uncertainty. One of our main findings based on the mathematical models is that the optimal system of fiscal transfer under unemployment uncertainty positively depends on Gross Domestic Product. Numerical simulation with realistic data shows that such transfer system is reliable and practicable.

  6. Fiscal sustainability and financial stability

    Grant number:24530377  2012.4 - 2016.3

    TAMAI Toshiki

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\2600000 ( Direct Cost: \2000000 、 Indirect Cost:\600000 )

    This study analyzes fiscal sustainability and stability of financial markets. The theoretical analysis shows that the golden rule of public finance enables actualizing the first-best equilibrium. A criteria to evaluate the dynamic efficiency of public investment is also provided. Numerical analysis shows that the first-best equilibrium has been actualized in the UK economy, and might be applicable to Germany and Japan when the golden rule was active.

  7. Dynamic Analysis on Fiscal Policy under Imperfect Competition

    Grant number:22730268  2010 - 2011

    TAMAI Toshiki

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\1170000 ( Direct Cost: \900000 、 Indirect Cost:\270000 )

    This study presents a realistic model of effective demand in the monetary production economy. The study shows that the aggregate demand size affects the aggregate income and employment level. A constitutive shortage of aggregate demand brings about constitutive unemployment equilibria. The fiscal policy is effective to promote the expansion of aggregate income and employment, and raises social welfare.

  8. Dynamic analysis on maintenance in public capital

    Grant number:20730206  2008 - 2009

    TAMAI Toshiki

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\1170000 ( Direct Cost: \900000 、 Indirect Cost:\270000 )

    This study develops an infrastructure-led growth model with choosing the durability of public capital. First, the theoretical study show that a rise in the share of public investment does not always require the neglect of maintenance of public capital, whereas a large amount of public capital stock requires low level of the durability. Second, the study demonstrates that optimally chosen durability is correlated with tax rate. The second result supports ad hoc setting of endogenous durability by Rioja (2003) and Kalaitzidakis and Kalyvitis (2004). These results are summarized in "Dynamic analysis on public investment policies in an endogenous growth model" (Studies in Applied Economics 3, pp.157-165, 2009 etc).

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Teaching Experience (On-campus) 18

  1. Graduation Thesis Research on Management I

    2021

  2. Graduation Thesis Research on Economics I

    2021

  3. Seminar on Management I

    2021

  4. Seminar on Economics I

    2021

  5. Special Studies (Graduation Thesis Research on Economics I)(E)

    2021

  6. Special Studies (Seminar on Economics I)(E)

    2021

  7. Public Economics

    2021

  8. Seminar on Public Economics Ⅰ

    2021

  9. Economics A

    2020

  10. Advanced Course of Public Economics

    2020

  11. Public Economics

    2020

  12. Seminar on Public Economics Ⅱ

    2020

  13. Seminar on Public Economics Ⅰ

    2020

  14. Public Economics B

    2020

  15. Public Economics

    2020

  16. Public Economics

    2019

  17. Public Economics

    2017

  18. Public Economics

    2016

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