• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Theoretical Study on International Differences in Non-Deductible Expenses

Research Project

Project/Area Number 20K02047
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 07100:Accounting-related
Research InstitutionKeio University

Principal Investigator

MURAKAMI Yutaro  慶應義塾大学, 経営管理研究科(日吉), 准教授 (30434591)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords契約理論 / 損金不算入制度 / 政策変更の柔軟性 / 控除対象外費用 / 交際費
Outline of Research at the Start

本研究では、とくに交際費の損金不算入制度に着目し、「なぜ、世界各国で損金不算入制度が異なっているのか」あるいは「損金不算入制度に影響を及ぼす要因は何か」について数理モデル(契約理論)を用いて明らかにしようとする。まず、令和2年度前半に、理論モデルの構築を試みる。令和2年度中盤から後半にかけて、セミナー、国内学会、国際学会での報告を行い、コメントを反映させて論文を改訂し、海外学術誌への投稿を目指す。令和3年度は、主に理論研究で得られた実証仮説をデータで検証することに時間を費やす。そして令和4年度は、実証分析で得られた結果をもとに理論モデルを修正する。

Outline of Final Research Achievements

This study analyzes how a tax system, in which expenses associated with business activities are only partially deductible for tax purposes, affects corporate behavior, including the effort level and compensation contracts. Since these activities create firm value and benefit the agent due to the inherent characteristics of consumption goods, the principal faces a trade-off between letting agents work with high-powered incentives and the tax payments resulting from non-deductible expenses. Further, we consider a government's behavior to analyze the case in which the government can flexibly change the non-deductible ratio. We find that the impacts of the corporate tax rate and the agent's preference for activities that incur tax non-deductible expenses depend on whether the non-deductible ratio is flexible. This result partially explains why various countries apply different rules for non-deductible expenses.

Academic Significance and Societal Importance of the Research Achievements

本研究の学術的意義は大きく2つある。第一に、費用の損金不算入制度が、インセンティブ率、エージェントの努力水準、プリンシパルの期待効用にどのような影響を与えるかを分析したことである。固定報酬の一部が損金不算入となるケースを分析した先行研究はあるが、事業活動に伴う経費が損金不算入となるケースを分析した研究は、私の知る限り存在しない。第二に、本研究では、政策を柔軟に変更できる政府が損金不算入割合を決定するケースを検討した。その結果、税率が企業行動に与える影響は、政府が損金不算入率を柔軟に変更できるか否かによって異なることが分かった。この結果は、国によって損金不算入のルールが異なる理由を説明できる。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (10 results)

All 2024 2023 2022 2021 2020

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 4 results) Book (1 results)

  • [Journal Article] Theoretical analysis of non-deductible expenses: Implications for the design of compensation contracts2024

    • Author(s)
      Murakami Yutaro、Wakabayashi Toshiaki
    • Journal Title

      Journal of Accounting and Public Policy

      Volume: 45 Pages: 107195-107195

    • DOI

      10.1016/j.jaccpubpol.2024.107195

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 近年における税法遵守研究の展開-RCTを用いたフィールド実験を中心とした文献レビュー―2023

    • Author(s)
      村上裕太郎
    • Journal Title

      慶應経営論集

      Volume: 39

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Under What Conditions Does the Manager Withhold Segment Information?2021

    • Author(s)
      Murakami Yutaro、Shiiba Atsushi
    • Journal Title

      Journal of Accounting, Auditing & Finance

      Volume: forthcoming Issue: 4 Pages: 1009-1038

    • DOI

      10.1177/0148558x211036248

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Contract rigidity and lim- ited attention on earnings timeliness2023

    • Author(s)
      Kazunori Miwa, Yutaro Murakami, Atsushi Shiiba, Satoshi Taguchi
    • Organizer
      45th Annual Congress of European Accounting Association
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] How is the deductible limit determined?: A theoretical analysis and entertainment expenses2022

    • Author(s)
      Yutaro Murakami and Toshiaki Wakabayashi
    • Organizer
      The Annual Congress of the European Accounting Association
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Contracting or target setting-which decision rights should be delegated to lower hierarchy?2021

    • Author(s)
      Yutaro Murakami and Toshiaki Wakabayashi
    • Organizer
      European Accounting Association Annual Congress
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 国際課税における先端複合研究2021

    • Author(s)
      村上裕太郎
    • Organizer
      日本会計研究学会第80回全国大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Contracting or target setting-which decision rights should be delegated to lower hierarchy?2021

    • Author(s)
      Yutaro Murakami and Toshiaki Wakabayashi
    • Organizer
      AEAJ Workshop
    • Related Report
      2020 Research-status Report
  • [Presentation] Which decision rights should be delegated to lower hierarchy?2020

    • Author(s)
      Yutaro Murakami and Toshiaki Wakabayashi
    • Organizer
      Korean Accounting Association Annual Global Meeting
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Book] 税務会計研究ハンドブック ―EBPMのための理論・実証分析序説―2024

    • Author(s)
      鈴木一水, 奥田真也, 米谷健司, 田村威文, 村上裕太郎
    • Total Pages
      344
    • Publisher
      同文館出版
    • Related Report
      2023 Annual Research Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi