TAX RULES TO PREVENT EXPECTATIONS-DRIVEN LIQUIDITY TRAPS

Yoichiro Tamanyu

Macroeconomic Dynamics, 2022, vol. 26, issue 6, 1564-1587

Abstract: Multiple equilibria arise in standard New Keynesian models when the nominal interest rate is set according to the Taylor rule and constrained by a zero lower bound (ZLB). One of these equilibria is deflationary and referred to as an expectations-driven liquidity trap (ELT) as it arises because of the de-anchoring of inflation expectations. This study demonstrates that a simple tax rule responding to inflation can prevent a liquidity trap from arising without increasing government spending or debt. We analytically investigate the necessary and sufficient conditions to prevent an ELT and show that both the frequency and persistence of ELT episodes affect the extent to which the tax rule must respond to inflation. In brief, the higher the frequency or the longer the persistence of the ELT, the greater the response of the tax rate must be.

Date: 2022
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Working Paper: Tax Rules to Prevent Expectations-driven Liquidity Trap (2019)
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