Empirical analyses starting from Laubach and Williams (2003) find that the natural rate of interest is not constant in the long-run. This paper studies the optimal response to stochastic changes of the long-run natural rate in a suitably modified version of the new Keynesian model. We show that,...

Negative interest rates remain a controversial policy for central banks. We study a novel signalling channel and ask under what conditions negative rates should exist in an optimal policymaker’s toolkit. We prove two necessary conditions for the optimality of negative rates: a time-consistent...

In the aftermath of the global financial crisis, central banks started being confronted with severe challenges that led to an unprecedented policy response in terms of the size and variety of monetary policy measures. One such measure centred on central banks communicating to the public more...

Central banks have been pursuing an expansionary monetary policy since before the pandemic, although the health and economic crisis of COVID-19 has boosted asset purchase programmes. After the Great Recession, a new phase began, characterised by low interest rates and liquidity injections. These...

We address the question in this paper's title using an estimated New Keynesian DSGE model of the euro area with trend inflation, imperfect indexation, and a lower bound on the nominal interest rate. In this setup, a decrease in the steady-state real interest rate, r*, increases the probability...

We propose a smooth shadow-rate version of the dynamic Nelson-Siegel (DNS) model to analyze the term structure of interest rates during the recent zero lower bound (ZLB) period. By relaxing the no-arbitrage restriction, our shadow-rate model becomes highly tractable with a closed-form yield...

In the present paper, we investigate the financial homogeneity of the euro area economies by contrasting eurozone countries' responses to monetary policy steps to the theoretical assumptions of the liquidity trap phenomenon. Our assumption is that the euro area economies are not completely...

In this paper, we propose a new exogenous model to address the problem of negative interest rates that preserves the analytical tractability of the original Cox-Ingersoll-Ross (CIR) model with a perfect fit to the observed term-structure. We use the difference between two independent CIR...

This paper investigates the predictive power of the shadow rate for the inflation rate in countries with a zero lower bound (the US, the UK and Canada) and in those with negative rates (Japan, the Euro Area and Switzerland). Using shadow rates obtained from two different models (the Wu-Xia...

Occasionally binding constraints (OBCs) like the zero lower bound (ZLB) can lead to multiple equilibria, and so to belief-driven recessions. To aid in finding policies that avoid this, we derive existence and uniqueness conditions for otherwise linear models with OBCs. Our main result gives...

We introduce the extended perturbation method, which improves the accuracy of standard perturbation by reducing approximation errors under certainty equivalence. For the New Keynesian model with Calvo pricing, extended perturbation is more accurate than standard perturbation, which implies...

The research question relates to the quantitative impact of government bond purchases of the European Central Bank on inflation and other economic variables at the zero lower bound. At the core is a standard New Keynesian Dynamic Stochastic General Equilibrium model with several financial...

The open economy New Keynesian model with flexible exchange rates postulates that the real exchange rate appreciates in response to an asymmetric negative demand shock in a zero lower bound (ZLB) scenario and exacerbates the adverse macroeconomic effects. However, when monetary policy is able to...

Until recently, negative nominal interest rates of the central bank were in the sphere of theoretical considerations. In 2009, the Swedish Central Bank was the first to implement a negative interest rate policy (NIRP). Since then, the NIRP has been implemented by the National Bank of Denmark,...

Evidence on the effects of negative interest rates on bank lending is inconclusive so far. By applying a difference-in-difference estimation using granular loan level data with a large coverage from Austria, I show, contrary to some previous findings, that the introduction of a negative deposit...

Implementation lags are one of policymakers' concerns about fiscal policies, as these may reduce their efficacy. Using a standard New Keynesian model with an effective lower bound on the nominal interest rate, we compare the impacts of fiscal stimulus on output across various lengths of...

We analyze the welfare impact of greater wage flexibility in the presence of an occasionally binding zero lower bound (ZLB) constraint on the nominal interest rate. We show that the ZLB constraint generally amplifies the adverse effects of greater wage flexibility on welfare when the central...

We investigate how households update their interest rate and inflation expectations upon hearing monetary condition news, and to what extent this changes their readiness to spend. Using data from the Michigan Survey of Consumers from December 2008 to December 2015, we find 1) the likelihood of...

This paper reconsiders the degree to which macroeconomic stabilization is possible when the zero lower bound is a relevant constraint on the effectiveness of conventional monetary policy, under an assumption of bounded rationality. In particular, we reconsider the potential role of...

We study zero interest-rate policy in response to a large negative demand shock when long-run inflation expectations can fall over time. Because falling expectations make monetary policy less effective by raising real interest rates, the optimal forward guidance policy makes large front-loaded...

Using a panel dataset of euro area banks over the period 2007-2019, we investigate the impact of negative interest rates on bank behavior. In line with the reversal rate literature, we find that negative interest rates squeeze banks’ interest rate margins, which can be attributed to downward...

Are government spending shocks inflationary at the zero lower bound (ZLB)? Despite the importance of the inflation channel in amplifying government spending multipliers at the ZLB, empirical studies have not provided a clear answer to this question. Exploiting newly constructed high-frequency...

We study the macroeconomic effects of internal devaluations undertaken by a periphery of countries belonging to a monetary union. We find that internal devaluations have large and positive output effects in the long run. Through an expectations channel, most of these effects carry over to the...