This paper examines the effects of interest rate cuts on investment behavior. The methodology is to simulate investment decision making under different capital costs. The experiment showed that decreasing interest rates encourage risk-taking. With the decreased interest rate as borrowing costs the risk taking increased weakly but continuously. The risk taking increased strongly when the interest rate reached zero. Thus the experiment showed excessive risk-taking when there were no capital costs. This finding supports the hypothesis that extreme expansive monetary policy with low, zero or negative interest rates encourage financial bubbles and overinvestments or wrong investments in the real economy.
The Good, the Bad, and the Ugly: Impact of Negative Interest Rates and QE on the Profitability and Risk-Taking of 1600 German Banks