KEIO RESEARCHERS INFORMATION SYSTEM

Profile 【 Display / hide 】

Profile 【 Display / hide 】

• https://web.econ.keio.ac.jp/staff/tdoi/

Profile Summary 【 Display / hide 】

Profile Summary 【 Display / hide 】

• http://web.econ.keio.ac.jp/staff/tdoi/

Career 【 Display / hide 】

Career 【 Display / hide 】

• 1998.04

  -

  1999.03

  University of Tokyo, Institute of Social Science, Research Associate

• 1999.04

  -

  2002.03

  Keio University, Faculty of Economics, Assistant Professor

• 2001.09

  -

  2002.08

  University of California, San Diego, Graduate School of International Relations and Pacific Studies, Visiting Scholar

• 2002.04

  -

  2002.08

  Keio University, Faculty of Economics, Associate Professor

• 2002.08

  -

  2004.03

  Keio University, Faculty of Economics, Associate Professor

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Academic Background 【 Display / hide 】

Academic Background 【 Display / hide 】

• 1989.04

  -

  1993.03

  Osaka University, Faculty of Economics, 経済学科

  University, Graduated

• 1993.04

  -

  1999.03

  The University of Tokyo, Graduate School of Economics

  Graduate School, Completed, Doctoral course

Academic Degrees 【 Display / hide 】

Academic Degrees 【 Display / hide 】

• Ph. D. (Doctor of Economics), The University of Tokyo, Coursework, 1999.03

  Political Economy of the Japanese Local Finance

• Master of Economics, The University of Tokyo, Dissertation, 1995.03

  •A political economic analysis of public investment policy in Japan

Research Areas 【 Display / hide 】

Research Areas 【 Display / hide 】

• Humanities & Social Sciences / Public economics and labor economics

Research Keywords 【 Display / hide 】

Research Keywords 【 Display / hide 】

• Local Public Finance

• Taxation

• Public Choice

• Social Security

• Fiscal Sustainability

Research Themes 【 Display / hide 】

Research Themes 【 Display / hide 】

• Political Economy of Intergovernmental Relationship, 

  2014.04

  -

  Present

• 政治的実行可能性を考慮した税制改革の経済分析, 

  2005

  -

  2006

  　View Summary

  今後我が国で行われうる税制改革の経済効果を、近年の家計の消費・貯蓄行動や所得分布に即して理論的・実証的に分析し、その効果を効率性と公平性の両面から経済学的に評価することにより、税制改革のあり方について政策的含意を導くことを目的とする。

Books 【 Display / hide 】

Books 【 Display / hide 】

• Introduction to Public Finance, 2nd edition

  DOI TAKERO, Nippon Hyoron Sha, 2021.04,  Page： 404

  　View Summary

  An introductory textbook that will give you the ability to think about public finances from an economics perspective. It provides a solid study of the institutional aspects of Japan's public finance. Updated statistics and an introduction to the tax and fiscal reforms of the 2010s are included to give a clear picture of the latest developments in public finance.

• Japan's economic policy making in the 2000s and 2010s

  DOI TAKERO, Chuokoron-Shinsha Inc., 2020.05,  Page： 360

  　View Summary

  In the first 20 years of the 21st century, Japan's economic policy has been to pursue fiscal consolidation and to emerge from deflation. In doing so, the wisdom of economics was challenged in overcoming one crisis after another. Abenomics, led by the Prime Minister's Office, is no exception. Based on on-the-ground discussions with five economists who have been involved in the formulation of economic policies since the Koizumi cabinet: Takatoshi Ito, Kazumasa Iwata, Hiroko Ohta, Heizo Takenaka, and Hiroshi Yoshikawa, we will get to the heart of the policies currently being implemented and expose the challenges that lie ahead.

• Introduction to Public Economics, 2nd edition

  DOI TAKERO, Nippon Hyoron Sha, 2018.03,  Page： 416

  　View Summary

  A textbook that allows students to systematically learn the public economic theory while directly observing actual policies in action. This revised edition includes recent changes and updated data in the tax and fiscal systems.

• 日本経済再生25年の計―金融・資本市場の新見取り図―

  DOI TAKERO, 日本経済新聞出版社, 2017.06

  Scope: 47-83

  　View Summary

  財政政策(異次元緩和下の財政と進めるべき改革)

• Introduction to Public Finance

  DOI TAKERO, Nippon Hyoron Sha, 2017.04

  　View Summary

  経済学の視点から、財政について考えていく力が身に付く入門書。日本の財政の制度的な側面もしっかりと学べる。

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Papers 【 Display / hide 】

Papers 【 Display / hide 】

• Incidence of Corporate Tax after the Corporate Tax Reform in Japan: A Simulation Analysis with a Dynamic Macroeconomic Model

  DOI TAKERO

  JCER Economic Journal （Japan Center for Economic Research)  78   1 - 34 2020.07

  Research paper (scientific journal), Single Work, Accepted,  ISSN  02855925

  　View Summary

  This paper investigates the effects of corporate tax reform in Japan, wherein the (effective) corporate income tax rate decreases from 34.62% to 29.74% and the rates of size-based business taxation (levy on the sum of labor cost and other factor payment) rise at 2.5 times. We implement a simulation based on a dynamic macroeconomic model including capital structure (i.e., choices of equity, debt, and retained earnings) in the proposed model in order to implement investment, and measure the incidence of corporate income tax on labor income. This tax reform implies that the tax base is shifted from corporate income to labor cost, because it accounts for the majority of factor payments for most firms on which the size-based business taxation or “pro-forma” taxation is imposed. We find that the benefit on labor income from reduction of corporate income taxation is decreased by about 30% by expansion of the size-based business taxation from a simulation result. A reason behind the phenomena is distortion stemming from the size-based business taxation. Labor income increases due to lowering (effective) corporate income tax rate, nevertheless it loses due to rising rates of size-based business taxation.

• Is Abe's fiscal policy Ricardian?: What does the fiscal theory of prices mean for Japan?

  DOI TAKERO

  Asian Economic Policy Review （Wiley)  18 （ 1 ） 46 - 63 2018.01

  Research paper (scientific journal), Single Work, Accepted,  ISSN  1832-8105

  　View Summary

  The second arrow of Abenomics is flexible fiscal policy. However, it does not mean just fiscal stimulus as the Abe administration decided on the fiscal consolidation target of achieving a primary surplus by fiscal year 2020. Improving the primary balance implies making government debt more sustainable. Although the consumption tax rate was raised from 5% to 8% in April 2014, the Abe administration has decided twice to postpone increasing the consumption tax from 8% to 10%. In addition, a fiscal stimulus package was implemented. We use a Fiscal Stance Index to examine fiscal policy from the viewpoint of fiscal sustainability and a Markov switching model to examine fiscal policy from the viewpoint of the fiscal theory of the price level, and find that the Abe's fiscal stance is not Ricardian.

  • Access to Document (DOI)

• Effect of deductions of personal income tax on income inequality in Japan: A microsimulation of reform of spousal tax deductions and tax credit

  DOI TAKERO

  Economic Review （Iwanami Shoten, Publishers)  68 （ 2 ） 150 - 168 2017.04

  Research paper (scientific journal), Single Work, Accepted

  　View Summary

  We investigate effects of reform of spousal tax deductions, which were listed in the 2017 tax reform outline, and deductions for persons on income inequality in Japan by using a microsimulation. The Japan Household Panel Survey (JHPS) in 2014 is used in the analyses. We find that the reform of exemptions for spouses does not substantially correct income disparity. It implies that the spousal tax deductions after the reform still remain as deductions from income (tax allowances), which have weaker effects in correcting income disparity relative to deductions from tax. In addition, we analyze a microsimulation which changes deductions from income to tax credits. That is, the reform in which deductions from income are abolished and tax credits based on household composition are newly established on only deductions for persons. We obtain the result that the Gini coefficient of the equivalent household disposable income slightly decreases. In order to decrease the Gini coefficient more, even deductions from earnings (deduction for employment income and deduction for public pensions) need to be abolished and tax credits need to be newly established. Moreover, according to a microsimulation, a "discount on social insurance premiums (tentative name)," which provide for partial compensation of premiums by using revenue from the personal income tax, acts to correct income inequality.

• 法人税改革の成果と課題

  DOI TAKERO

  租税研究 （日本租税研究協会)  2016 （ 8 ） 19 - 58 2016.08

  Research paper (scientific journal), Single Work,  ISSN  0288-0768

• Microsimulation of personal income tax reform from tax deductions to tax credit

  DOI TAKERO

  Mita Journal of Economics （Keio Economic Society)  109 （ 1 ） 61 - 86 2016.04

  Research paper (bulletin of university, research institution), Single Work,  ISSN  00266760

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Papers, etc., Registered in KOARA 【 Display / hide 】

Papers, etc., Registered in KOARA 【 Display / hide 】

• Another better way of the corporate tax reform in Japan : close but not the same as the value-added tax

  Doi, Takero

  Keio economic studies （Keio Economic Society, Keio University)  56   3 - 21 2023

  ISSN  00229709

• Microsimulation analysis of the intergenerational effects of personal income tax reforms in Japan

  Doi, Takerō

  Mita journal of economics （慶應義塾経済学会)  113 （ 4 ） 457 (35) - 470 (48) 2021.01

  ISSN  00266760

• An analysis of the effects of fiscal policy before and after the convergence of COVID-19

  Doi, Takero

  学事振興資金研究成果実績報告書 （慶應義塾大学)  2021

• An analysis of the effects of fiscal policy before and after the convergence of COVID-19

  Doi, Takero

  学事振興資金研究成果実績報告書 （慶應義塾大学)  2020

• Analysis on international economic effects of corporation tax reform

  Doi, Takero

  学事振興資金研究成果実績報告書 （慶應義塾大学)  2018

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Presentations 【 Display / hide 】

Presentations 【 Display / hide 】

• Fiscal Reconstruction and Macroeconomy

  OKAMOTO HIDEO, DOI TAKERO, MATSUO TADASHI and MATSUBAYASHI HIROSHI

  75th Annual Meeting of Japan Institute of Public Finance (Kagawa University) , 

  2018.10

  , 

  Symposium, workshop panel (nominated), Japan Institute of Public Finance

• Corporate Value, Capital Structure and Social Welfare after Corporate Tax Reform: The Case of Japan

  DOI TAKERO and KATAGI HIROSHI

  2018 International Conference of World Finance Conference (Le Meridien Ile Maurice Hotel, Pointe aux Piments, Republic of Mauritius) , 

  2018.07

  , 

  Oral presentation (general), World Finance Conference

• Corporate Value, Capital Structure and Social Welfare after Corporate Tax Reform: The Case of Japan

  DOI TAKERO and KATAGI HIROSHI

  93rd Annual Conference of Western Economic Association International (Sheraton Vancouver Wall Centre, Vancouver) , 

  2018.06

  , 

  Oral presentation (general), Western Economic Association International

• Incidence of Corporate Tax and Optimal Capital Structure: Simulation of Dynamic Effects of Tax Reform in Japan

  DOI TAKERO

  85th International Atlantic Economic Conference (Cumberland Hotel, London) , 

  2018.03

  , 

  Oral presentation (general), International Atlantic Economic Society

• 社会保険料を含めた「公的資金の社会的限界費用」の推計―配偶者控除見直しの厚生分析―

  DOI TAKERO and KURITA HIROAKI

  74th Annual Congress of Japan Institute of Public Finance (Rikkyo University) , 

  2017.09

  , 

  Oral presentation (general), Japan Institute of Public Finance

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Research Projects of Competitive Funds, etc. 【 Display / hide 】

Research Projects of Competitive Funds, etc. 【 Display / hide 】

• Corporate tax reform and corporate behavior in Japan

  2023.04

  -

  2026.03

  基盤研究(C), Principal investigator

• Empirical Analysis on Fiscal Consolidation of Local Governments

  2019.04

  -

  2022.03

  MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Principal investigator

• 長寿社会における世代間移転と経済格差： パネルデータによる政策評価分析

  2017.04

  -

  2022.03

  文部科学省・日本学術振興会, Grant-in-Aid for Scientific Research, HIGUCHI YOSHIO, Research grant, Coinvestigator(s)

• 財政危機に対応しうる医療制度・政策に関する研究

  2017.04

  -

  2020.03

  文部科学省・日本学術振興会, Grant-in-Aid for Scientific Research, MORITA AKIRA, Research grant, Coinvestigator(s)

• Political Economy of Intergovernmental Relationship

  2014.04

  -

  2017.03

  文部科学省・日本学術振興会, Grant-in-Aid for Scientific Research, Takero Doi, Research grant, Principal investigator

  　View Summary

  This study focuses on intergovernmental relationship as problems of "Tragedy of the Commons." We obtain the main following results through both theoretical and empirical analyses. In a theoretical one, herd behavior of local governments are observed when they are risk-averse, and it lowers economic growth, which expects to be enhanced by an innovative policy. In an empirical study, such herd behavior is observed using regional variations in vaccination subsidy amount within Japan's current immunization program. Also, the same tax base of national and local taxes can be recognized as a commons. We examine a simulation analysis of corporate tax reform using a dynamic general equilibrium model, since national corporate tax and corporate income tax are the same tax base, and obtain results that labor income totally increases after the reform, but partly decreases by an increase in size-based business taxation of local tax.

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Awards 【 Display / hide 】

Awards 【 Display / hide 】

• Nikkei Prize for Excellent Books in Economic Science

  DOI TAKERO, 2007.11, Nikkei Inc.

  　View Description

  For the book "Economics of Local Bond System"

• Suntory Prize for Social Sciences

  DOI TAKERO, 2007.12, Suntory Foundation, 政治・経済部門

  　View Description

  For the book "Economics of Local Bond System"

• 義塾賞

  DOI TAKERO, 2007.11, 慶應義塾, For the book "Economics of Local Bond System"

  Type of Award： Keio commendation etc.

Courses Taught 【 Display / hide 】

Courses Taught 【 Display / hide 】

• SEMINAR: PUBLIC FINANCE

  2024

• SEMINAR: APPLIED ECONOMICS AND POLICY

  2024

• RESEARCH SEMINAR D

  2024

• RESEARCH SEMINAR C

  2024

• RESEARCH SEMINAR B

  2024

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Courses Previously Taught 【 Display / hide 】

Courses Previously Taught 【 Display / hide 】

• Public Finance

  Keio University

  2018.04

  -

  2019.03

• 財政論

  慶應義塾大学

  2018.04

  -

  2019.03

• Corporate Finance

  Keio University

  2005.04

  -

  2006.03

  , 

  Full academic year, Lecture, Lecturer outside of Keio, 1h

• Public Economics

  Keio University

  2018.04

  -

  2019.03

• 公共経済学

  慶應義塾大学

  2018.04

  -

  2019.03

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Educational Activities and Special Notes 【 Display / hide 】

Educational Activities and Special Notes 【 Display / hide 】

• 土居丈朗『入門公共経済学（第２版）』日本評論社

  2018.03

  , Development of Textbook and Teaching Material

  　View Details

  https://www.nippyo.co.jp/shop/book/7673.html

• 土居丈朗『入門財政学』日本評論社

  2017.04

  , Development of Textbook and Teaching Material

  　View Details

  http://j.mp/DoiPbF

• 土居丈朗『入門公共経済学』日本評論社

  2002.11

  , Development of Textbook and Teaching Material

  　View Details

  http://web.econ.keio.ac.jp/staff/tdoi/pubecon.html

Memberships in Academic Societies 【 Display / hide 】

Memberships in Academic Societies 【 Display / hide 】

• Science Council of Japan, 

  2006.08

  -

  Present

• Tokyo Center for Economic Research, 

  2004.05

  -

  Present

• The Japan Public Choice Society, 

  1999.04

  -

  Present

• American Economic Association, 

  1999.01

  -

  Present

• International Institute of Public Finance, 

  1997.04

  -

  Present

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Committee Experiences 【 Display / hide 】

Committee Experiences 【 Display / hide 】

• 2021.04

  -

  Present

  Commissioner, Fiscal System Council

• 2019.04

  -

  2021.03

  Temporary Commissioner, Fiscal System Council

• 2018.11

  -

  2021.03

  Senior Fellow, Tokyo Foundation for Policy Research

• 2018.10

  -

  Present

  Chairperson, Program Committee, 2019 Spring Meeting of Japanese Economic Association

• 2018.09

  -

  Present

  Temporary Member, Industrial Structure Council

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