We assess the sustainability of the public finances of Greece, Ireland, Italy, Portugal and Spain (GIIPS), allowing for possible non-linearities in the form of threshold behaviour of the fiscal authorities. We provide some evidence of fiscal sustainability when debt gets “too high” relative...

We extend previous work on the sustainability of the government's intertemporal budget constraint by allowing for non-linear adjustment of the fiscal variables, conditional on (i) the sign of budgetary disequilibria and (ii) the phase of the economic cycle. Further, our endogenously estimated...

We extend previous literature on fiscal policy sustainability by introducing non-linear fiscal reaction functions with endogenously estimated state-varying thresholds to capture the behaviour of fiscal policy authorities during “good” and “bad” times. These thresholds vary with the level...

This paper examines the inflationary impact of domestic and global liquidity conditions on UK inflation through the lens of monetary aggregates. To do so, we rely on standard linear models as well as non-linear models that allow for regime switching behaviour in terms of a contained regime (when...

We explore how the ECB sets interest rates in the context of policy reaction functions. Using both real-time and revised information, we consider linear and nonlinear policy functions in inflation, output and a measure of financial conditions. We find that amongst Taylor rule models, linear and...

This paper studies optimal real time monetary policy when the central bank takes the volatility of the output gap and inflation as proxy of the undistinguishable uncertainty on the exogenous disturbances and the parameters of its model. The paper shows that when the uncertainty surrounding a...

We present empirical evidence that the marked rise in liquidity in 2001-2007 was due to large and persistent current account deficits and loose monetary policy. If this increase in liquidity was a pre-condition for the financial crisis that began in July 2007, we can conclude that loose monetary...

We argue that although UK monetary policy can be described using a Taylor rule in 1992-2007, this rule fails during the recent financial crisis. We interpret this as reflecting a change in policymakers’ preferences to give priority to stabilising the financial system. Developing a model of...

We estimate a flexible non-linear monetary policy rule for the UK to examine the response of policymakers to the real exchange rate. We have three main findings. First, policymakers respond to real exchange rate misalignment rather than to the real exchange rate itself. Second, policymakers...

Consumers complain that retail prices of petroleum products increase instantly whenever prices of crude oil increase but take a long time to fall after crude oil price decreases. This apparent discrepancy attracts significant attention in the applied literature, as it might imply a welfare...