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Erscheinungsjahr: 
2013
Schriftenreihe/Nr.: 
CESifo Working Paper No. 4342
Verlag: 
Center for Economic Studies and ifo Institute (CESifo), Munich
Zusammenfassung: 
In this note we elaborate on the effect of the modeling choice of the zero lower bound on the size of the fiscal multiplier. To this end we contrast two different ways to implement the ZLB in a New Keynesian model: the ZLB modeled as an endogenous central bank reaction to a contractionary demand shock as in Christiano, Eichenbaum, Rebelo (2011) and the ZLB modeled as an exogenous monetary shock as in Cogan, Cwik, Taylor, Wieland (2010). We find that only the former treat the ZLB as an appropriate constraint for policy. We show that the economic significant differences in the size of the fiscal multiplier are not only due to differences in the timing assumption of government spending but also driven by the choice of the ZLB modeling. Ceteris paribus, the impact multiplier is higher if the ZLB is modeled appropriately as a constraint.
Schlagwörter: 
zero lower bound
fiscal multipliers
fiscal policy
monetary policy
JEL: 
E52
E62
E63
Dokumentart: 
Working Paper
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