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Empirical evidence suggests that contractionary monetary and macroprudential policies have stronger effects than expansionary ones. We introduce this feature into a structural DSGE model with financial frictions. The asymmetry results from the assumption of occasionally binding credit constraints which we introduce via a penalty function. Our simulations show that a large loan-to-value ratio (our macroprudential tool) tightening can have a much stronger impact on the economy than a loosening of the same size. In contrast, small policy innovations, whether expansionary or contractionary, have effects of almost equal magnitude. Our approach provides an interesting way of modeling asymmetric effects of financial frictions for policy purposes.

A Penalty Function Approach to Occasionally Binding Credit Constraints