Optimal Provision of Public Goods under Uncertainty

• Project/Area Number: 16K03726
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Public finance/Public economy
• Research Institution: Nagoya University
• Principal Investigator: TAMAI Toshiki 名古屋大学, 経済学研究科, 准教授 (00456584)
• Project Period (FY): 2016-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
• Keywords: 公共財 / 不確実性

Outline of Final Research Achievements

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.

Academic Significance and Societal Importance of the Research Achievements

本研究では、これまで様々な研究分野で並行して行われてきた研究内容を統合することで、不確実性の下での公共財供給の理論的研究を精緻化するとともに最適供給ルールを導出した。その基礎となった理論モデルは比較的取り扱いが簡便であるため、今後の拡張研究の土台となるものであり、その学術的意義は大きい。また、その汎用性を示すことにも成功していることも本研究の重要な貢献の一つである。そうした学術的貢献のみならず、政策判断の基礎資料を提供すべく、明示的で実用的な最適供給ルール及び最適供給に資する財政制度を提示している。政策に科学的裏付けが求められる今日において、本研究の成果は社会的に意義あるものと言える。

Research Products

• [Int'l Joint Research] アデレード大学(オーストラリア)
• [Int'l Joint Research] アデレード大学(オーストラリア)
• [Journal Article] Capital Market Integration and Fiscal Sustainability (2019)
  • Author(s): Miyazawa Kazutoshi, Ogawa Hikaru, Tamai Toshiki
  • Journal Title: European Economic Review Volume: 120 Pages: 1-29
  • DOI: 10.1016/j.euroecorev.2019.103305
  • Peer Reviewed / Open Access
• [Journal Article] Tax competition, unemployment, and intergovernmental transfers (2019)
  • Author(s): Yuya Kikuchi, Toshiki Tamai
  • Journal Title: International Tax and Public Finance Volume: 26 Issue: 4 Pages: 899-918
  • DOI: 10.1007/s10797-019-09533-0
  • Peer Reviewed
• [Journal Article] Unemployment, tax competition, and tax transfer policy (2019)
  • Author(s): Toshiki Tamai, Gareth Myles
  • Journal Title: Nagoya University Economic Research Center Discussion Paper Volume: E19-3 Pages: 1-25
  • NAID: 120006645117
  • Open Access / Int'l Joint Research
• [Journal Article] Deficit-Financed Public Investment, Economic Growth, and Welfare in an Overlapping Generations Model (2019)
  • Author(s): Toshiki Tamai, Akira Kamiguchi
  • Journal Title: Nagoya University Economic Research Center Discussion Paper Volume: E19-1 Pages: 1-10
  • NAID: 120006627995
  • Open Access
• [Journal Article] Public investment, public debt, and population aging under the golden rule of public finance (2019)
  • Author(s): Kamiguchi Akira、Tamai Toshiki
  • Journal Title: Journal of Macroeconomics Volume: 60 Pages: 110-122
  • DOI: 10.1016/j.jmacro.2019.01.011
  • Peer Reviewed / Open Access
• [Journal Article] Dynamic provision of public goods under uncertainty (2018)
  • Author(s): Tamai Toshiki
  • Journal Title: Economic Modelling Volume: 68 Pages: 409-415
  • DOI: 10.1016/j.econmod.2017.08.008
  • Peer Reviewed / Open Access
• [Journal Article] Public Investment and Golden Rule of Public Finance in an Overlapping Generations Model (2017)
  • Author(s): 上口 晃 玉井 寿樹
  • Journal Title: 京都大学経済研究所ディスカッションペーパー Volume: 971
  • Open Access / Acknowledgement Compliant
• [Presentation] Public Investment and Golden Rule of Public Finance in an Overlapping Generations Model (2017)
  • Author(s): 玉井 寿樹
  • Organizer: 京都大学先端政策分析研究センターCAPS研究会
  • Place of Presentation: 京都大学経済研究所
  • Year and Date: 2017-02-04
• [Presentation] Public investment and golden rule of public finance in an overlapping generations model (2017)
  • Author(s): Toshiki Tamai, Akira Kamiguchi
  • Organizer: PET17 Paris
  • Int'l Joint Research
• [Presentation] 公的資本と経済成長 (2016)
  • Author(s): 玉井 寿樹
  • Organizer: 日本応用経済学会
  • Place of Presentation: 慶応義塾大学
  • Year and Date: 2016-11-27
  • Invited