Revisiting the New Keynesian policy paradoxes under QE

Dario Bonciani and Joonseok Oh

In the wake of the global financial crisis in 2008, nominal interest rates in the US and other advanced economies have approached the effective lower bound (ELB). This fact has motivated new research to understand, both theoretically and empirically, the impact of monetary policies when the nominal policy rate is at the ELB. In a new paper, we show that accounting for balance sheet policies (QE) can ease the constraints imposed by the ELB on monetary policy and resolve several paradoxical results arising in canonical New Keynesian models at the ELB. The ‘paradox of flexibility’, the ‘paradox of toil’ and the puzzle of excessively large fiscal multipliers are all resolved when QE is added to the model as policy tool.

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