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Die kurzfristigen Steuereffekte der "Thesaurierungsbegünstigung" für Personenunternehmen: eine mikrofundierte Analyse


  • Michael Broer
  • Nadja Dwenger


With the 2008 reform of business taxation (Unternehmensteuerreform 2008) a preferential treatment of retained earnings for non-incorporated companies was introduced: Earnings may be retained at a preferential tax rate (29.8%) and will be subjected to supplementary tax (26.4%) when they will be withdrawn in the future. By now, studies on this topic have been based on case studies. Our article is based on microdata of the German Income Tax Statistics 2002 and provides a general empirical analysis of the new regulation's fiscal effects. Unlike studies before, we do not only consider marginal tax rates but also take into account that retained earnings may reduce progressive income tax for other earnings. Moreover we consider that taxpayers may retain earnings without having to pay supplementary taxes on these earnings if they are withdrawn within two years. On the individual level, beneficiaries of the preferential treatment are mainly taxpayers with high income. For instance, those with an annual income of at least 750,000 Euro reduce their tax burden by approximately 10% (unmarried, withdrawal before retention of 100,000 Euro). By contrast, taxpayers with an annual income of less than 22,087 Euro do not benefit from the reform at all. On the macroeconomic level, the fiscal effects of the reform are considerable: Depending on the scenario, we estimate a shortfall in receipts of 3.4 bn, 5.0 bn Euro and 7.5 bn Euro (theoretical upper limit).

Suggested Citation

  • Michael Broer & Nadja Dwenger, 2008. "Die kurzfristigen Steuereffekte der "Thesaurierungsbegünstigung" für Personenunternehmen: eine mikrofundierte Analyse," Discussion Papers of DIW Berlin 765, DIW Berlin, German Institute for Economic Research.
  • Handle: RePEc:diw:diwwpp:dp765

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    References listed on IDEAS

    1. Homburg, Stefan & Houben, Henriette & Maiterth, Ralf, 2008. "Optimale Eigenfinanzierung der Personenunternehmen nach der Unternehmensteuerreform 2008/2009," EconStor Open Access Articles, ZBW - Leibniz Information Centre for Economics, pages 29-47.
    2. Broer Michael, 2007. "Tarifliche Steuerbelastung von Einzelunternehmen in Dänemark, Deutschland, Österreich und Tschechien," Zeitschrift für Wirtschaftspolitik, De Gruyter, vol. 56(3), pages 268-289, December.
    3. Stefan Bach & Hermann Buslei & Nadja Dwenger, 2007. "Unternehmensteuerreform 2008: positives Signal auf Kosten der Steuersystematik," DIW Wochenbericht, DIW Berlin, German Institute for Economic Research, vol. 74(18), pages 293-301.
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    Cited by:

    1. Claudia Wesselbaum-Neugebauer, 2008. "§ 34a EStG - Einstieg in eine rechtsformneutrale Besteuerung oder Option für ein virtuelles Trennungsprinzip?," Schumpeter Discussion Papers sdp08009, Universitätsbibliothek Wuppertal, University Library.
    2. Hechtner, Frank & Hundsdoerfer, Jochen & Sielaff, Christian, 2010. "Zur Bedeutung von Progressionseffekten für die Steuerplanung: Eine Analyse am Beispiel der Thesaurierungsbegünstigung," arqus Discussion Papers in Quantitative Tax Research 101, arqus - Arbeitskreis Quantitative Steuerlehre.
    3. Kerstin Schneider & Claudia Wesselbaum-Neugebauer, 2010. "Innovation im Steuerrecht: Wie kann die Thesaurierungsbegünstigung eine annähernd belastungsneutrale Besteuerung von Personen- und Kapitalgesellschaften gewährleisten?," Schumpeter Discussion Papers sdp10002, Universitätsbibliothek Wuppertal, University Library.

    More about this item


    Business taxes; German income taxation; unincorporated companies; tax revenue; micro simulation;

    JEL classification:

    • H25 - Public Economics - - Taxation, Subsidies, and Revenue - - - Business Taxes and Subsidies
    • H32 - Public Economics - - Fiscal Policies and Behavior of Economic Agents - - - Firm
    • H60 - Public Economics - - National Budget, Deficit, and Debt - - - General
    • C15 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Statistical Simulation Methods: General

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