Euro area inflation persistence

This paper presents evidence on the lag between monetary policy actions and the response of inflation in the euro area as a whole as well as in some of its core countries, notably Germany, Italy and France. In line with previous findings for the US and the UK, results here show that it takes over a year before monetary policy actions have their maximum effect on inflation both in the euro area and in individual countries and that a lag of this length has existed in Europe at least since the collapse of the Bretton Woods system, despite the numerous changes in European monetary policy regime thereafter. Results based on alternative definitions of inflation persistence support these findings and indicate, if any, that transmission lags could be in fact much longer for individual countries and the euro area as a whole, although, at the country level, there is strong evidence over time of a drop in German inflation persistence and a sizeable shift in the mean of inflation – particularly in Italy and France. An examination based on results from this paper reveals that euro area inflation persistence could well be an intrinsic phenomenon rather than a ‘statistical fluke’ due to aggregation.This research was conducted during my visit at the European Central Bank Directorate Research, as part of the Research Visitor Programme. I would like to thank Anna Maria Agresti for providing individual country data from the macroeconomic database of the Monetary Transmission Network; Alistair Dieppe for providing data from the ECB area-wide model dataset; and Michele Manna for supplying me with the area-wide M3 data for the period 1970–1980. I thank Gabriel Fagan, Frank Smets, Ignazio Angeloni, Vítor Gaspar, Michael Ehrmann, Guenter Coenen, Oreste Tristani, Tommaso Monacelli, Stephanie Schmitt-Grohe and Gerhard Ruenstler for helpful discussions during my stay at the ECB. I would also like to thank seminar participants at the ECB for their input and I am very grateful to Jeffrey Fuhrer, Edward Nelson and Kenneth West, Bernd Fitzenberger and two anonymous referees for comments on an earlier draft. Any errors and omissions are mine. The views expressed in this paper are those of the author and should not be attributed to the International Monetary Fund, its Executive Board, or its management     

Time-varying persistence in US inflation

The persistence property of inflation is an important issue not only for economists, but especially for central banks, given that the degree of inflation persistence determines the extent to which central banks can control inflation. Further, not only is it the level of inflation persistence that is important in economic analyses, but also the question of whether the persistence varies over time, for instance, across business cycle phases, is equally pertinent, since assuming constant persistence across states of the economy is sure to lead to misguided policy decisions. Against this backdrop, we extend the literature on long-memory models of inflation persistence for the US economy over the monthly period of 1920:1–2014:5, by developing an autoregressive fractionally integrated moving-average-generalized autoregressive conditional heteroskedastic model with a time-varying memory coefficient which varies across expansions and recessions. In sum, we find that inflation persistence does vary across recessions and expansions, with it being significantly higher in the former than in the latter. As an aside, we also show that persistence of inflation volatility is higher during expansions than in recessions. Understandably, our results have important policy implications.     

Time variation in inflation persistence: New evidence from modelling US inflation

This article explores how inflation persistence relates to the conduct and goals of monetary policy by presenting a new approach to modelling US inflation persistence and the Fed's dual mandate. Our framework fills a gap in pre-existing models by more flexibly accounting for diverse dynamic properties and shocks. Estimating a Phillips Curve model augmented with inflation volatilities and expectations, we find that the degree of monthly inflation persistence is time variant since World War II. Variations in persistence continue to be observed regardless of the absolute level of inflation and the extent of the trade-off between inflation and unemployment. We demonstrate that inflation persistence varies in line with expectations formed by memories of past inflation. This supports the case for more flexible monetary policy at times, as in the 1980s or especially the present decade, when inflation is more persistent.     

Supply side inflation persistence

We explore the role of the cost channel in accounting for inflation persistence in the New Keynesian model with Calvo pricing. Hump-shaped responses of inflation to monetary shocks are obtained under purely nominal rigidities.     

Inflation persistence in the Euro area before and after the European Monetary Union

This paper provides new evidence on inflation persistence before and after the European Monetary Union (EMU). Taking into account fractional integration of inflation, we confirm that inflation dynamics differed considerably across Euro area countries before the start of EMU. Since 1999, however, results obtained from panel estimation indicate that the degree of long run inflation persistence has converged. In line with theoretical predictions, we find that the persistence of inflation has significantly decreased in the Euro area, probably as a result of the more effective monetary policy of the ECB.     

Timeless perspective versus discretionary policymaking when the degree of inflation persistence is unknown

One major strand in optimal monetary policy analysis considers the robustness of alternative policies under model uncertainty. Another has focused on the appropriate perspective for optimal monetary policy, namely discretion or the timeless perspective (TP). The paper bridges these two parallel lines of research by assessing the welfare consequences of both policy perspectives in the presence of misperceptions about the degree of intrinsic inflation persistence. Contrary to most standard results, discretion can be the more robust perspective, the reason being that the TP exploits the expectations channel. With misperceptions this leads to large deteriorations in welfare.     

Causal relations between inflation and inflation uncertainty—Cross sectional evidence in favour of the Friedman-Ball hypothesis

We test for causality between inflation and its associated uncertainty by means of both in-sample and out-of-sample modelling. Our findings indicate that the impact of inflation on inflation uncertainty is more pronounced than the reverse causal effect.     

The impact of ECB and FED announcements on the Euro interest rates

We investigate the impact of news in the ECB and FED monetary policy announcements on daily changes in Euro interest rates. We document significant impacts of ECB announcements throughout the period but only until mid 2004 of FED announcements.     

Signalling commitment with monetary and inflation targets

This article studies a two-period game between the public and a central bank about whose ability to commit to an announced target the public is uncertain. The central bank chooses between announcing a target for an intermediate variable (money growth) and its goal variable, inflation. Prior to setting its instrument, the central bank receives private, noisy information about the link between money growth and inflation. Monetary targeting facilitates communication of the central bank's type, in that the probability of separation is always higher than under inflation targeting. This advantage of monetary targets from a dependable central bank's perspective is outweighed for most parameter values by the advantage of inflation targeting in terms of inflation control. If the regime choice is treated as a strategic decision, over a large range of parameter values both central banks choose the regime that a dependable central bank would prefer.     

Non-linearities in euro area inflation persistence

This paper investigates the nature of inflation dynamics with a special focus on inflation persistence. Using data from euro area member-states we estimate dynamic non-linear panel models addressing in detail econometric issues concerning unobserved heterogeneity, genuine state dependence, and the initial conditions problem. After controlling for observed and unobserved heterogeneity, our results suggest that the degree of inflation persistence is genuine and varies depending on whether the inflation rate is too high, within the range of ECB's target of price stability, too low or negative. This implies that policies to stabilize inflation in the short run will have longer-run effects.     

Inflation surprises and inflation expectations in the Euro area

In the second half of 2012, euro area inflation started declining and reached historical lows at the end of 2014. Market-based measures of inflation expectations also declined to unprecedented levels. During this disinflationary period, inflation releases have often surprised analysts on the downside. We provide evidence that inflation ‘surprises’ have significant effects on inflation expectations. The sensitivity of inflation expectations to the surprises, which has varied over time, disappeared after the introduction of the Asset Purchase Programme by the European Central Bank.     

Budget deficits and inflation feedback

This paper reinterprets the mixed evidence of the relationship between budget deficits and inflation in high inflation economies. The main finding is that recurrent outbursts of extreme inflation in these economies can be explained by a certain hysteresis effect associated with public finance. This interpretation meets the evidence that dramatic shifts between regimes of moderately high and extremely high (hyper-) inflation often occur without visible deterioration in public finance or abrupt shifts in fiscal or monetary policies. The existence of this hysteresis effect is explicitly explained by the action of two mechanisms: the arithmetic associated with the wrong side of the inflation tax Laffer curve and the Patinkin effect (the reverse of the much oftener cited Olivera-Tanzi effect). It is also shown that the division of the operational budget deficit into the part that is subject to negative inflation feedback and the part that is inflation-proof has implications for both the discussion of the inflationary consequences of budget deficits and the design of stabilization policy.     

New Keynesian Phillips Curve and inflation dynamics in Australia

The New Keynesian Phillips Curve (NKPC) was developed as a response to the New Classical critique that Keynesian macroeconomics lacked micro-foundations. The NKPC provides theoretical micro-foundations that attempt to explain, inter alia, nominal rigidities and, explicitly price stickiness. This paper investigates the validity of the NKPC for Australia. In contrast to the findings for the USA and Euro area, we find that neither the output gap nor marginal cost appears to be a key driving force variable across different set of instruments and estimators (GMM and 2SLS) over the sample period from 1959 to 2009. The flattening of the NKPC along with significant presence of price stickiness is also found in the data. In particular, the reduced form coefficients and implied estimates from the structural parameters of the model support the view that inflation dynamics are forward looking while the role of lagged inflation is also statistically important only after 1980s. However, we claim that the forward looking baseline NKPC contrary to the hybrid NKPC is stable and better explains inflation dynamics for the Australian economy.     

Modeling the behaviour of inflation deviations from the target

This study tests for and models non-linearities in inflation deviations from the target in five OECD countries that adopted inflation targeting over the 1990s. Our tests reject the linearity hypothesis and we show that the exponential smooth transition autoregressive (ESTAR) model is capable of capturing the non-linear behavior of inflation misalignments. The extent of inflation deviations from the target varies across the OECD countries, with countries that consistently undershoot the target having a rapid adjustment process, whereas countries that overshoot the target have a slower revision back to equilibrium. Out-of-sample forecasts from the ESTAR model outperform the Markov regime-switching model.     

Sticky prices and moderate inflation

Recent evidence shows that there is great heterogeneity in the price setting frequency across sectors, and that those changing prices frequently do so even under low inflation. What happens to price setting strategies of sticky price goods under moderate inflation? We built a dataset of monthly newspaper and magazine prices for Colombia, for the period 1960–2005, an exceptional example of prolonged moderate inflation. Within this macroeconomic scenario, and the novel database, we study the frequency of price adjustment, the relative importance of time- and state-dependent theories, and their evolution as inflation declined from moderate rates to single digits.     

Sustainability, flexibility, and inflation targeting

This paper examines sustainability of an inflation-targeting policy regime in terms of sustainable equilibrium using a canonical model in the recent literature. Overly flexible inflation targeting is not sustainable. Strict inflation targeting is sustainable only when shock persistence is high enough.     

On the dynamics of international inflation

We investigate the dynamic properties of inflation in 20 OECD countries with a novel approach based on the autocorrelation function. We find evidence in favor of long memory and nonlinearity. Linear autoregressive models are shown to be misspecified.     

A persistence-weighted measure of core inflation in the Euro area

We propose a new core inflation measure for the Euro area which places the emphasis on the more lasting, i.e. persistent, price developments at a disaggregated level. The importance of each component of the HICP is reweighted according to its relative persistence, as measured by the sum of the autoregressive coefficients or by an indicator of mean reversion. Unlike headline inflation, our baseline core inflation measure is highly correlated with ECB monetary policy decisions, which could mean that they contain ex ante (pre monetary policy) information on inflationary pressure.     

The hump-shaped behavior of inflation and a dynamic externality

We propose a general equilibrium model that explains the empirical evidence of the hump-shaped response of inflation to a monetary policy shock. The model replaces backward-looking indexation à la Christiano et al. [2005. Nominal rigidities and the dynamic effect of a shock to monetary policy. Journal of Political Economy 113(1), 1-45] with a dynamic externality into the production function of firms. The model, armed with sticky wages and variable capital utilization, has two offsetting effects on real marginal cost over the business cycle. First, increasing factor prices raise real marginal cost in response to an expansionary monetary policy shock in the intermediate run. Second, a dynamic externality reduces real marginal cost in the short run because it raises productivity in response to an increase in output following the shock. Overall, the resulting short-run decrease and intermediate-run increase in marginal cost replicate the hump-shaped behavior of inflation under purely forward-looking price and wage Phillips curves.     

Welfare cost of inflation in a stochastic balanced growth model

There is a large and growing literature on the welfare cost of inflation. However, work in this area tend to find moderate estimates of welfare gains. In this paper we reexamine welfare costs of inflation within a stochastic general equilibrium balanced growth model paying a particular attention to recursive utility, portfolio balance effects, and monetary volatility and monetary policy uncertainty. Our numerical analysis shows that a monetary policy that brings down inflation to the optimum level can have substantial welfare effects. Portfolio adjustment effects seem to be the dominant factor behind the welfare gains.