scholarly journals RAMSEY OPTIMAL POLICY IN THE NEW-KEYNESIAN MODEL WITH PUBLIC DEBT

2021 ◽  
pp. 1-27
Author(s):  
Jean-Bernard Chatelain ◽  
Kirsten Ralf
Keyword(s):  
Public Debt ◽  
Optimal Policy ◽  
Multiple Equilibria ◽  
New Keynesian ◽  
New Keynesian Model ◽  
Keynesian Model ◽  
Simple Rules ◽  
Debt Dynamics ◽  
Level Versus ◽  
The Interest Rate

In the discrete-time new-Keynesian model with public debt, Ramsey optimal policy eliminates the indeterminacy of simple-rules multiple equilibria between the fiscal theory of the price level versus new-Keynesian versus an unpleasant equilibrium. If public debt volatility is taken into account into the loss function, the interest rate responds to public debt besides inflation and output gap. Else, the Taylor rule is identical to Ramsey optimal policy when there is zero public debt. The optimal fiscal-rule parameter implies the local stability of public-debt dynamics (“passive” fiscal policy).

scholarly journals Public Debt and Changing Inflation Targets

2016 ◽  
Vol 8 (4) ◽  
pp. 142-176 ◽  
Author(s):  
Michael U. Krause ◽  
Stéphane Moyen
Keyword(s):  
Central Bank ◽  
Public Debt ◽  
Pronounced Effect ◽  
New Keynesian ◽  
Moderate Increase ◽  
New Keynesian Model ◽  
Inflation Target ◽  
Keynesian Model ◽  
Maturity Structure ◽  
Inflation Targets

What are the effects of a higher central bank inflation target on the burden of real public debt? Several recent proposals have suggested that even a moderate increase in the inflation target can have a pronounced effect on real public debt. We consider this question in a New Keynesian model with a maturity structure of public debt and an imperfectly observed inflation target. We find that moderate changes in the inflation target only have significant effects on real public debt if they are essentially permanent. Moreover, the additional benefits of not communicating a change in the inflation target are minor. (JEL E12, E31, E52, H63)

scholarly journals CONDI: A Cost-of-Nominal-Distortions Index

2011 ◽  
Vol 3 (3) ◽  
pp. 53-91 ◽  
Author(s):  
Stefano Eusepi ◽  
Bart Hobijn ◽  
Andrea Tambalotti
Keyword(s):  
Optimal Policy ◽  
Inflation Targeting ◽  
Price Index ◽  
New Keynesian ◽  
New Keynesian Model ◽  
Price Stickiness ◽  
Welfare Costs ◽  
Keynesian Model ◽  
Welfare Losses

We construct a PCE-based price index whose weights minimize the welfare costs of nominal distortions: a cost-of-nominal-distortions index. We compute these weights in a multi-sector New Keynesian model, calibrated to match US data on price stickiness, labor shares, and inflation across sectors. The CONDI weights mostly depend on price stickiness. Moreover, CONDI stabilization leads to negligible welfare losses compared to the optimal policy and is better approximated by core rather than headline inflation targeting. An even better approximation can be obtained with an adjusted core index. (JEL C14, E12, E25, E31, E52).

scholarly journals DESIGNING MONETARY AND FISCAL POLICY RULES IN A NEW KEYNESIAN MODEL WITH RULE-OF-THUMB CONSUMERS

2012 ◽  
Vol 18 (2) ◽  
pp. 395-417 ◽  
Author(s):  
Raffaele Rossi
Keyword(s):  
Steady State ◽  
Fiscal Policy ◽  
Public Debt ◽  
New Keynesian ◽  
Ricardian Equivalence ◽  
New Keynesian Model ◽  
Policy Rules ◽  
Rule Of Thumb ◽  
Keynesian Model ◽  
Monetary And Fiscal Policy

This paper studies the determinacy properties of monetary and fiscal policy rules in a small-scale New Keynesian model. We modify the standard model in two ways. First, we allow positive public debt in the steady state as in Leeper [Journal of Monetary Economics 27, 129–147 (1991)]. Second, we add rule-of-thumb consumers as in Bilbiie [Journal of Economic Theory 140, 162–196 (2008)]. Leeper studied a model in which Ricardian equivalence holds, and he showed that monetary and fiscal policy can be studied independently. In Bilbiie's analysis, rule-of-thumb consumers break the Ricardian equivalence and generate important consequences for the design of monetary policy. In his model, steady-state public debt was equal to zero. We study a model with both rule-of-thumb consumers and positive steady-state public debt. We find that the mix of fiscal and monetary policies that guarantees equilibrium determinacy is sensitive to the exact values of the parameters of the model.

Money and Credit in the New Keynesian Model

2014 ◽  
Vol 65 (3) ◽  
Author(s):  
Sven Offick ◽  
Hans-Werner Wohltmann
Keyword(s):  
Interest Rate ◽  
Central Bank ◽  
Interest Rates ◽  
Banking Sector ◽  
New Keynesian ◽  
Credit Channel ◽  
New Keynesian Model ◽  
Static Approximation ◽  
Keynesian Model ◽  
The Interest Rate

AbstractThis paper integrates a money and credit market into a static approximation of the baseline New Keynesian model based on a money-and-credit-in-the-utility approach, in which real balances and borrowing contribute to the household’s utility. In this framework, the central bank has no direct control over the interest rate on bonds. Instead, the central bank’s instrument variables are the monetary base and the refinancing rate, i. e. the rate at which the central bank provides loans to the banking sector. Our approach gives rise to a credit channel, in which current and expected future interest rates on the bond and loan market directly affect current goods demand. The credit channel amplifies the output effects of isolated monetary disturbances. Taking changes in private (inflation and interest rate) expectations into account, we find that - contrarily to BERNANKE and BLINDER (1988) - the credit channel may also dampen the output effects of monetary disturbances. The expansionary effects of a monetary expansion may be substantially diminished if the monetary disturbance is accompanied by a contractionary credit shock. In a dynamic version of our model, in which expectations are formed endogenously, we find that the credit channel amplifies output responses.

INTEREST RATE RULES AND EQUILIBRIUM STABILITY UNDER DEEP HABITS

2013 ◽  
Vol 18 (1) ◽  
pp. 23-40 ◽  
Author(s):  
Sarah Zubairy
Keyword(s):  
Interest Rate ◽  
Multiple Equilibria ◽  
New Keynesian ◽  
New Keynesian Model ◽  
Interest Rate Rules ◽  
Keynesian Model ◽  
Interest Rate Rule ◽  
Countercyclical Markups ◽  
High Degree ◽  
Very High

This paper studies the determinacy of equilibrium in a new Keynesian model with deep habits under different interest rate rules. The main finding is that an interest rate rule satisfying the Taylor principle is no longer a sufficient condition to guarantee determinacy. Including interest rate smoothing and a response to output deviations from steady state significantly enlarges the regions of determinacy. However, under all the simple interest rate rules considered, determinacy is not guaranteed for a very high degree of deep habits. Deep habits give rise to countercyclical markups, which is in line with empirical evidence and makes them an appealing feature in the study of demand shocks. The countercyclicality of markups also leads to multiple equilibria because of self-fulfilling expectations for a high degree of deep habit formation.

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