Martin Simmler

How Do Taxes Affect Investment When Firms Face Financial Constraints

This study uses a switching regression framework with known sample separation to analyze the effects of corporate income taxation on investment in case of binding and non-binding financial constraints. By employing two different sample splitting criteria, payout behavior and the ratio of liabilities to total assets, I show that the elasticity of capital to its user costs in an auto-distributed-lag model is underestimated in case of neglecting the presence of financial constraints. For unconstrained firms, the elasticity of capital to its user costs is around -1. For financially constrained firms the elasticity is statistically not different from zero. For the latter group instead, the results prevail by using the effective average tax rate to measure liquidity outflow through taxation that corporate taxation affects investment through changing internal finance. In addition, this study helps to understand the methodological differences between auto-distributed-lag and error-correction models.

From financial to real economic crisis: Evidence from individual firm-bank relationships in Germany

What began as a financial crisis in the United States in 2007-2008 quickly evolved into a massive crisis of the global real economy. We investigate the importance of the bank lending and firm borrowing channel in the international transmission of bank distress to the real economy - in particular, to real investment and labor employment by nonfinancial firms. We analyze whether and to what extent firms are able to compensate for the shortage in loan supply by switching banks and by using other types of financing. The analysis is based on a unique matched data set for Germany that contains firm-level financial statements for the 2004-2010 period together with the financial statements of each firms relationship bank(s). We use instrumental variable estimations in first differences to eliminate firm- and bankspecific effects. The first stage results show that banks that suffered losses due to proprietary trading activities at the onset of the financial crisis reduced their lending more strongly than non-affected banks. In the second stage, we find that firms whose relationship banks reduce credit supply downsize their real investment and labor employment significantly. This effect is larger for firms that are unable to provide much collateral. We document that firms partially offset reduced credit supply by establishing new bank relationships, using internal funds, and issuing new equity.

Differential Taxation and Firms' Financial Leverage: Evidence from the Introduction of a Flat Tax on Interest Income

Tax competition for the mobile factor capital has led to a trend in many countries to levy lower taxes on interest income, often introducing differential taxation between interest and business income. In this study, we analyze the effect of such differential taxation on the debt ratio of firms. We exploit a 2009 tax reform in Germany as a quasi-experiment, which introduced a flat final withholding tax and opened a gap of 18 percentage points between the tax rate on income from unincorporated businesses and the new lower tax rate on interest income. We apply a regression adjusted semi-parametric difference-in-difference matching strategy based on firm level panel data. In addition, we implement a more structural approach with a tax rate differential, taking into account its endogeneity by using instrumental variables. The results indicate that firms increase their leverage when the tax rate on interest income decreases, albeit to a small degree.