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The end of the flat tax experiment in Slovakia: An evaluation using behavioural microsimulation in a dynamic macroeconomic framework

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  • Michal Horvath
  • Zuzana Siebertova
  • Matus Senaj
  • Norbert Svarda
  • Jana Valachyova


Publication details

JournalEconomic Modelling
DateAccepted/In press - 12 Nov 2018
DateE-pub ahead of print - 16 Nov 2018
DatePublished (current) - Aug 2019
Pages (from-to)171-184
Early online date16/11/18
Original languageEnglish


The paper introduces a new way of linking microsimulation models with dynamic general equilibrium frameworks to obtain an evaluation of the impact of detailed tax and benefit measures on the aggregate economy. In the approach presented in this paper, income heterogeneity interacts with the macro-economy via aggregated individual labour supply decisions which influence, and are influenced by, the dynamic evolution of the real wage rate. The method involves a reduced-form representation of the information flow between the macroeconomic and microeconomic blocks. The practical usefulness of the approach is demonstrated by evaluating actual and hypothetical tax reforms that involve abandoning the flat tax system in Slovakia. A hypothetical move to a highly progressive tax structure is shown to generate some employment gains but is associated with a drop in aggregate income and tax revenue.

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    Research areas

  • microsimulation, dynamic general equilibrium, unemployment, labour supply elasticity, tax reform, flat tax

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