Vimercati, Riccardo Bianchi. <br/><br/>
Fiscal Policy at the Zero Lower Bound without Rational Expectations / 
Riccardo Bianchi Vimercati, Martin S. Eichenbaum, Joao Guerreiro. 
 - Cambridge, Mass.  National Bureau of Economic Research  2021. 
 - 1 online resource:  illustrations (black and white); 
 - NBER working paper series  no. w29134 .
 - Working Paper Series (National Bureau of Economic Research)  no. w29134. .
<br/><br/> August 2021. 
<br/><br/> We address the question of how sensitive is the power of fiscal policy in the ZLB to the assumption of rational expectations. We do so through the lens of a standard NK model in which people are level-k thinkers. Our analysis weakens the case for using government spending to stabilize the economy when the ZLB binds. The less sophis- ticated people are, the smaller is the size of the government-spending multiplier. Our analysis strengthens the case for using tax policy to stabilize output when the ZLB is binding. The power of tax policy to stabilize the economy during the ZLB period is essentially undiminished when agents do not have rational expectations. Finally, we show that the way in which tax policy is communicated is critical to its effectiveness. 
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