Forward Guidance in a Simple Model with a Zero Lower Bound

CESifo Economic Studies, 2015

We study monetary policy at the ZLB in a traceable three-period model, in which pricelevel targeting emerges endogenously in the welfare function. We characterize optimal pricelevel forward guidance under discretion and commitment. Potentially non-monotonic discretionary welfare losses are lowest with perfectly flexible prices. Price-level targeting introduces a new constraint on optimal forward guidance that restricts the credible amount of overshooting. With this constraint, the zero lower bound may be binding even after the shock has abated. We characterize conditions when the commitment to hold nominal rates at zero for an extended period is optimal. Finally, we introduce government spending and show that under persistently low policy rates optimal government spending becomes more front-loaded, while procyclical austerity fares worse than discretionary government spending.

2012

We examine global dynamics under infinite-horizon learning in New Keynesian models where the interest-rate rule is subject to the zero lower bound. As in Evans, , the intended steady state is locally but not globally stable. Unstable deflationary paths emerge after large pessimistic shocks to expectations. For large expectation shocks that push interest rates to the zero bound, a temporary fiscal stimulus or a policy of fiscal austerity, appropriately tailored in magnitude and duration, will insulate the economy from deflation traps. However "fiscal switching rules" that automatically kick in without discretionary fine tuning can be equally effective.

SSRN Electronic Journal, 2018

This paper studies the macroeconomic effects of central bank forward guidance when central bank credibility is endogenous. In particular, we take a stylized New Keynesian model with an occasionally binding zero lower bound constraint on nominal interest rates and heterogeneous and boundedly rational households. The central bank uses a bivariate VAR to forecast, not taking into account the time-variation in the distribution of aggregate expectations. In this framework, we extend the central bank's toolkit to allow for the publication of its own forecasts (Delphic guidance) and the commitment to a future path of the nominal interest rate (Odyssean guidance). We find that both Delphic and Odyssean forward guidance increase the likelihood of recovery from a liquidity trap. Even though Odyssean guidance alone appears more powerful, we find it to increase ex post macroeconomic volatility and thus reduce welfare.

Journal of Monetary Economics, 2007

Ignoring the existence of the zero bound on nominal interest rates one considerably understates the value of monetary commitment in New Keynesian models. A stochastic forward-looking model with an occasionally binding lower bound, calibrated to the U.S. economy, suggests that low values for the natural rate of interest lead to sizeable output losses and deflation under discretionary monetary policy. The fall in output and deflation are much larger than in the case with policy commitment and do not show up at all if the model abstracts from the existence of the lower bound. The welfare losses of discretionary policy increase even further when inflation is partly determined by lagged inflation in the Phillips curve. These results emerge because private sector expectations and the discretionary policy response to these expectations reinforce each other and cause the lower bound to be reached much earlier than under commitment.

2006

Journal of Economic Dynamics and Control

2003

We consider the consequences for monetary policy of the zero floor for nominal interest rates. The zero bound can be a significant constraint on the ability of a central bank to combat deflation. We show, in the context of an intertemporal equilibrium model, that open-market operations, even of "unconventional" types, are ineffective if they do not change expectations about the future conduct of policy; in this sense, a "liquidity trap" is possible. Nonetheless, a credible commitment to the right sort of history-dependent policy can largely mitigate the distortions created by the zero bound. In our model, optimal policy involves a commitment to adjust interest rates so as to achieve a time-varying price-level target, when this is consistent with the zero bound. We also discuss ways in which other central-bank actions, while irrelevant apart from their effects on expectations, may help to make credible a central bank's commitment to its target, and consider implications for the policy options currently available for overcoming deflation in Japan.

NBER Macroeconomics Annual, 2017

This paper studies the effects of FOMC forward guidance. We begin by using high frequency identification and direct measures of FOMC private information to show that puzzling responses of private sector forecasts to movements in federal funds futures rates on FOMC announcement days can be attributed entirely to Delphic forward guidance. However a large fraction of futures rates' variability on announcement days remains unexplained, leaving open the possibility that the FOMC has successfully communicated Odyssean guidance. We then examine whether the FOMC used Odyssean guidance to improve macroeconomic outcomes since the financial crisis. To this end we use an estimated medium-scale New Keynesian model to perform a counterfactual experiment for the period 2009q1-2014q4, in which we assume the FOMC did not employ any Odyssean guidance and instead followed its reaction function from before the crisis as closely as possible while respecting the effective lower bound. We find that a purely rule-based policy would have delivered better outcomes in the years immediately following the crisis than FOMC forward guidance did in practice. However starting toward the end of 2011, after the Fed's introduction of "calendar-based" communications, the FOMC's Odyssean guidance appears to have boosted real activity and moved inflation closer to target. We show that our results do not reflect Del Negro, Giannoni, and Patterson (2015)'s forward guidance puzzle. JEL Codes: E0.

American Economic Review, 2004

2015

We examine global dynamics under infinite-horizon learning in New Keynesian models where monetary policy practices either pricelevel or nominal GDP targeting and compare these regimes to inflation targeting. The interest-rate rules are subject to the zero lower bound. The domain of attraction of the targeted steady state is proposed as robustness criterion for a policy regime. Robustness of price-level and nominal GDP targeting depends greatly on whether forward guidance in these regimes is incorporated in private agents’ learning. We also analyze volatility of inflation, output and interest rate during learning adjustment for the different policy regimes. JEL Classification: E63, E52, E58.