C68 - Computable General Equilibrium ModelsReturn

This article builds on long-term research by authors in the field of tax burden and its impacts, incorporating a newly designed indicator of legal uncertainty in the tax area which is conceived on the basis of a detailed description of the legislation. This indicator, together with other important factors, is incorporated into the tax system model and its links and influence on the behaviour of economic actors are examined. The aim of the article is to evaluate the impact of legal uncertainty in taxation on the labour supply in the Czech Republic. From a methodological point of view, DSGE modelling and quarterly data for the period 2002-2016 are used. The main conclusion of the study is the confirmation of the negative impact of uncertainty on all examined taxes. At the same time, in all the cases, a shift from the official to the shadow economy occurs. Úvod

The purpose of this paper is to create a financial fragility model for the Czech financial sector. We adapt the Goodhart-Tsomocos model which is based on general equilibrium with incomplete markets, money and default. The calibration of the model is based on publicly available data from the period 2003-2011. Finally, we perform comparative statics to show how the key variables of the model respond to possible events. The model can be used by government institutions to stress-test the banking sector, as well as by banking and other financial institutions to estimate the development of, inter alia, the default rates of their clients. The model also incorporates default of households and may be used, after further extension, in predicting households' default rates with respect to the behaviour of banks in consequence of changes in macroeconomic parameters of the environment.