This paper introduces a reinforcement learning based approach to compute optimal interest rate reaction functions in terms of fulfilling inflation and output gap targets. The method is generally flexible enough to incorporate restrictions like the zero lower bound, nonlinear economy structures...

We simulate the fiscal stimulus packages set up by the German government to alleviate the costs of the COVID-19 pandemic in a dynamic New Keynesian multi-sector general equilibrium model. We find that, cumulated over 2020-2022, output losses relative to steady state can be reduced by more than 4...

The dependency on imported essential production inputs poses a threat of abrupt price hikes and shortages, potentially triggered by political events. The energy crisis resulting from the Russian war of aggression is an example. This paper investigates whether governments should bolster...