Non Linear Monetary Policy Rules

Using stochastic simulations and stability analysis, the paper compares how different monetary rules perform in a moderately nonlinear model with a time-varying nonaccelerating-inflation-rate-of-unemployment (NAIRU). Rules that perform well in linear models but implicitly embody backward-looking measures of real interest rates (such as conventional Taylor rules) or substantial interest rate smoothing perform very poorly in models with moderate nonlinearities, particularly when policymakers tend to make serially correlated errors in estimating the NAIRU. This challenges the practice of evaluating rules within linear models, in which the consequences of responding myopically to significant overheating are extremely unrealistic.

This timely volume presents the latest thinking on the monetary policy rules and seeks to determine just what types of rules and policy guidelines function best. A unique cooperative research effort that allowed contributors to evaluate different policy rules using their own specific approaches, this collection presents their striking findings on the potential response of interest rates to an array of variables, including alterations in the rates of inflation, unemployment, and exchange. Monetary Policy Rules illustrates that simple policy rules are more robust and more efficient than complex rules with multiple variables. A state-of-the-art appraisal of the fundamental issues facing the Federal Reserve Board and other central banks, Monetary Policy Rules is essential reading for economic analysts and policymakers alike.

One distinguishable characteristic of emerging market economies is that they are not financially robust. These economies are incapable of smoothing out large external shocks, as sudden capital outflows imply large and abrupt swings in the real exchange rate. Using a small open-economy model, this paper examines alternative monetary policy rules for economies with different degrees of liability dollarization. The paper answers the question of how efficient it is to use inflation targeting under high liability dollarization. Our findings suggest that it might be optimal to follow a nonlinear policy rule that defends the real exchange rate in a financially vulnerable economy.

The Fed has taken several steps towards strengthening its monetary framework over the past several years. Those steps have supported the Fed’s efforts to stimulate the economy through forward guidance despite being constrained by having policy rates at zero. We show that an optimal control approach to monetary policy, which includes the publication of a baseline forecast and a description of the uncertainties around that outlook, combined with an improvement in the Fed’s communications toolkit, could further enhance the effectiveness of Fed policy. In the current conjuncture, such a risk management approach to monetary policy would result in both a later liftoff of policy rates and a modest, but planned, overshooting of inflation.

A contributors' "who's who" from the academic and policy communities explain and provide perspectives on John Taylor's revolutionary thinking about monetary policy. They explore some of the literature that Taylor inspired and help us understand how the new ways of thinking that he pioneered have influenced actual policy here and abroad.

This paper estimates Taylor-type interest rates for the United States allowing for both time and state dependence. It provides evidence that the coefficients of the Taylor rule change significantly over time, and that the behavior of the Federal Reserve over the cycle can be explained using a two-state switching regime model. During expansions, the Federal Reserve follows a rule that can be characterized as inflation targeting with a high degree of interest rate smoothing. During recessions, the Federal Reserve targets output growth and conducts policy in a more active manner. The implications of conducting this type of policy are analyzed in a small scale new Keynesian model.

In the past few years, a number of central banks have adopted inflation targeting for monetary policy. The author provides an introduction to inflation targeting, with an emphasis on analytical issues, and the recent experience of middle- and high-income developing countries (which have relatively low inflation to begin with, and reasonably well-functioning financial markets). After presenting a formal analytical framework, the author discusses the basic requirements for inflation targeting, and how such a regime differs from money, and exchange rate targeting regimes. After discussing the operational framework for inflation targeting (including the price index to monitor the time horizon, the forecasting procedures, and the role of asset prices), he examines recent experiences with inflation targets, providing new evidence on the convexity of the Phillips curve for six developing countries. His conclusions: Inflation targeting is a flexible policy framework that allows a country's central bank to exercise some degree of discretion, without putting in jeopardy its main objective of maintaining stable prices. In middle- and high-income developing economies that can refrain from implicit exchange rate targeting, it can improve the design, and performance of monetary policy, compared with other policy approaches that central banks may follow. Not all countries may be able to satisfy the technical requirements (such as adequate price data, adequate understanding of the links between instruments, and targets of monetary policy, and adequate forecasting capabilities), but such requirements should not be overstated. Forecasting capability can never be perfect, and sensible projections always involve qualitative judgment. More important, and often more difficult, is the task of designing, or improving an institutional framework that would allow the central bank to pursue the goal of low, stable inflation, while maintaining the ability to stabilize fluctuations in output.