Managed Floating as a Monetary Policy Strategy

Although there seems to be a broad consensus among economists that purely floating or completely fixed exchange rates (the so-called corner solutions) are the only viable alternatives of exchange rate management, many countries do not behave according to this paradigm and adopt a strategy within the broad spectrum of exchange rate regimes that is limited by the two corner solutions. Many of these intermediate regimes are characterized by significant foreign exchange market interventions and a certain degree of exchange rate flexibility with non-preannounced exchange rate targets. While academic research in this area usually concentrates on some specific aspects of intermediate regimes (such as the effectiveness of interventions or institutional aspects), managed floating has rarely been analyzed as a comprehensive monetary policy strategy. In this paper, we present a monetary policy framework in which central banks simultaneously use the exchange rate and the interest rate as operating targets of monetary policy. We explain the mechanics of foreign exchange market interventions and sterilization and we explain why a central bank has an interest of controlling simultaneously the two operating targets. We derive the monetary policy rules for the two operating targets from a simple open economy macro model in which the uncovered interest parity condition and the monetary conditions index play a central role.     

Model‐free evaluation of directional predictability in foreign exchange markets

We examine directional predictability in foreign exchange markets using a model‐free statistical evaluation procedure. Based on a sample of foreign exchange spot rates and futures prices in six major currencies, we document strong evidence that the directions of foreign exchange returns are predictable not only by the past history of foreign exchange returns, but also the past history of interest rate differentials, suggesting that the latter can be a useful predictor of the directions of future foreign exchange rates. This evidence becomes stronger when the direction of larger changes is considered. We further document that despite the weak conditional mean dynamics of foreign exchange returns, directional predictability can be explained by strong dependence derived from higher‐order conditional moments such as the volatility, skewness and kurtosis of past foreign exchange returns. Moreover, the conditional mean dynamics of interest rate differentials contributes significantly to directional predictability. We also examine the co‐movements between two foreign exchange rates, particularly the co‐movements of joint large changes. There exists strong evidence that the directions of joint changes are predictable using past foreign exchange returns and interest rate differentials. Furthermore, both individual currency returns and interest rate differentials are also useful in predicting the directions of joint changes. Several sources can explain this directional predictability of joint changes, including the level and volatility of underlying currency returns. Copyright © 2007 John Wiley & Sons, Ltd.     

Carry-trades on the yen and the Swiss franc: are they different?

Using monthly data from 1986 to 2009 for 11 major currencies against the U.S. dollar (USD), we find that interest rate differentials between nine of these currencies are generally positive (sample mean of 0.86%) but are strongly negative for Japan (mean of ?2.78%) and for Switzerland (mean of ?2.22%). Investigating empirical models of nominal exchange rate changes we find for all panels that about 2% of real exchange rate misalignments are corrected in the following month. We also find important differences across samples and for the two carry-trade currencies the key results are as follows. First, interest rate differentials have a negative impact on exchange rates: higher paying currencies should appreciate, contrary to the ex-ante uncovered interest rate parity (UIP) condition. We find that this result is very robust to money supply (M1) differentials serving as instrumental variables to inflation rates. In addition, these two currencies depreciate slightly when money supply (M1) differentials increase. Second, dummy variables for periods of market turmoil suggest a particularly strong appreciation of these currencies against the USD, consistent with the unwinding of carry-trade activities.     

The Theory of Exchange Rate Target Zones

The theory of exchange rate target zones focuses on the role of exchange rate expectations in determining exchange rate behaviour and interest rate differentials in currency bands. This paper analyses earlier models of the target zone research programme as well as more recent developments including endogenous realignment expectations, price rigidities and alternative monetary feedback rules by means of a unified approach. Target zones may be the cause of stabilizing or destabilizing exchange rate expectations, the determinants of which crucially depend on the within-band central bank policy as well as the credibility of the central banks' commitment to defend the target zone. The paper closes with a discussion of the relative merits of implementing a target zone and some suggestions for further research.     

The relative size of exchange rate and interest rate responses to news: An empirical investigation

This paper examines the relative size of the effects of macroeconomic news on the spot exchange rate, and interest rate differentials (2- and 5-year swap rate differentials), and the synthetic forward exchange rate schedule, for the high-frequency New Zealand data. We find that the spot exchange rate and 5-year swap rates respond by a similar magnitude to monetary surprises, implying there is little response of the forward exchange rate to this type of news. In contrast, the spot exchange rate responds by nearly three times as much as 5-year interest rates to CPI and GDP surprises, implying that forward rates appreciate to higher than expected CPI or GDP news. This is in contrast to standard theoretical models and US evidence. Lastly, we show that exchange rates but not interest rates respond to current account news. The implications of these results for monetary policy are considered.     

Investigating the PPP hypothesis using constructed U.S. dollar equilibrium exchange rate misalignments over the post-bretton woods period

This paper investigates the PPP-hypothesis over the post-Bretton Woods period using a representation of the equilibrium exchange rate (EER) that is an alternative to the real exchange rate. The results provide evidence in support of the relative-PPP hypothesis over the current period of floating exchange rates (1974–2005); while stronger evidence is found for the post-Plaza Accord period (1986–2005). EERs based on export price indexes (EPI) and constructed traded goods price indexes (TPI) best demonstrate the mean reverting behavior of the spot exchange rate as opposed to those EERs based on CPI, PPI, or the GDP-deflator. This mean reverting behavior is slightly improved if one takes international interest rate differentials into account; however EERs extended by productivity differentials do not indicate any improvements over the base model. Over the post-Plaza Accord period average half-lives of less than 1 year are reported using TPI-based EERs, adjusted by interest rate differentials. For large misalignments, we find probabilities that the spot exchange rate will converge towards the constructed CPI-based equilibrium exchange rate of up to 80%. Lastly, over the post-Plaza Accord period, the TPI-based EERs are able to statistically significantly outperform the pure random walk at short-term forecast horizons of less than 1 year for some spot exchange rates.     

The impact of macro news and central bank communication on emerging European forex markets

We employ a two-stage empirical strategy to analyze the impact of macroeconomic news and central bank communication on the exchange rates of three Central and Eastern European (CEE) currencies against the euro. First we estimate the nominal equilibrium exchange rate based on a monetary model. Second, we employ a high-frequency GARCH model to estimate the effects of the news and communication along with the estimated exchange rate misalignment on the exchange rate as well as its volatility. The analysis is performed during the pre-crisis (2004–2007) and crisis (2008–2009) periods. CEE currencies react to macroeconomic news during both periods in an intuitive manner that corresponds to exchange rate-related theories. However, the responsiveness of the currencies to central bank verbal interventions becomes important only during the crisis period.     

Are central banks really breaking the (policy) rules?

• ? Looking at the strength of the global economy, it's no surprise that simple policy rules suggest that interest rates in some advanced economies are much too low and/or that several rate hikes would be needed in 2018 to avoid falling further behind the curve. Nonetheless, we expect central banks to respond cautiously and we see a slower pace of tightening than the consensus view .
• ? Policy rules, such as the Taylor Rule, have long been considered a useful guide to the potential path for policy rates. But while it suggests that current US, Eurozone and Australian central bank rates are broadly appropriate, it signals that UK, Canadian, and Swedish rates should be substantially higher. Based on our economic forecasts, Taylor Rules suggest that the central banks in the US, Eurozone, Canada and Australia will all need to raise intertest rates by around 100bps by end‐2018.
• ? However, there are several reasons not to draw strong conclusions from such point estimates. First, the Taylor Rule requires estimates of two unobservable variables – the output gap and the natural rate of interest – which cannot be estimated precisely.
• ? Second, using models that were designed to predict US policy responses in the 1990s to forecast central banks' behaviour today is likely to be misleading. Meanwhile, inferring central banks' reaction functions from recent policy rate moves to assess the future policy path is fraught with difficulties. Not only have interest rates been broadly unchanged for the bulk of the post‐financial crisis period, but policymakers have provided other forms of policy support.
• ? Third, outside the US at least, Taylor Rules have historically pointed to persistently different policy rates from those observed, yet inflation has been well anchored.
• ? The upshot of all this is that we expect central banks in the advanced economies to err on the side of caution and anticipate interest rates rising less quickly than the consensus amongst economists.

     

Monetary policy rules for convergence to the Euro

This paper investigates the applicability of open-economy convergence-consistent instrument rules for monetary policies in the economies undergoing monetary convergence to a common currency area. The proposed policy rule is forward-looking, consistent with a monetary framework based on inflation-targeting containing input variables that are relative to the corresponding variables in the common currency area. Robust forms of the policy rule are tested empirically for three inflation-targeting countries converging to the euro, i.e. the Czech Republic, Poland and Hungary. Empirical tests imply systemic differences in monetary policies among these euro-candidates. The Czech monetary policy seemingly follows the rule prescribed by our model. Both the Czech and the Polish central bank interest rate policies respond predominantly to changes in the inflation gap, while the Hungarian responds mainly to the exchange rate gap. In all three cases, changes in the eurozone short-term interest rates strongly drive adjustments in the central banks’ reference interest rates.     

Uncovering uncovered interest parity during the classical gold standard era, 1888–1905

This paper examines the uncovered interest parity hypothesis using the dollar-sterling exchange rate during the gold standard era. This period is interesting because the exchange rate was seasonal, because transactions costs were high, and because occasions when uncovered interest rate speculation did not occur can be identified. The paper shows UIP speculation frequently did not occur, that speculation was most active in response to expected exchange rate changes not interest differentials when it did occur, and that profitability varied systematically with interest rate differentials. The estimated UIP equations are substantially improved by distinguishing occasions when sterling was borrowed not lent.     

Central bank hawks unlikely to gain the ascendancy

• ? Although further financial market weakness could delay or scale back central bank tightening this year, the waters are being muddied by the perception that underlying inflation pressures are building and that past exceptional measures to counter downside risks may no longer be needed. On balance, we think that it is more likely that central banks will push back, rather than bring forward, rate hikes, especially if the recent oil price weakness persists.
• ? The most crucial issues for the path of monetary policy are likely to be the outlook for inflation and the risks to growth prospects. While there may be grounds to reverse past ‘insurance’ cuts in interest rates, only a slow pace of normalisation is justified at present, in our view. In Europe in particular, sustained lowflation remains a risk.
• ? Central banks may develop a taste for raising rates if they perceive the neutral interest rate to be trending up. There may also be a desire to normalise policy to create space for future loosening, but this will only affect policy at the margin. Meanwhile, although problems such as banking troubles and the zombification of firms are often blamed on low interest rates, they are probably more a symptom of low growth and other more structural issues. Raising interest rates is unlikely to resolve these problems.
• ? At the margin, central bank behaviour may become less dovish. However, with the global economy slowing and some recession warning indicators flashing amber, the wings of the hawks will likely remain clipped.

     

Can money matter for interest rate policy?

In this paper it is shown that money can matter for macroeconomic stability under interest rate policy when transactions frictions are non-negligible. We develop a sticky price model with a shopping time function, which induces the marginal utility of consumption to depend on the (predetermined) stock of money held at the beginning of the period. Equilibrium stability and uniqueness are then ensured by a passive interest rate policy, whereas activeness is associated with an explosive equilibrium. By reacting to changes in beginning-of-period real balances, the central bank can restore stability. Interest rates further depend on lagged real balances even if the central bank acts in an entirely forward-looking way, as under discretionary optimization. If the model is revised such that end-of-period money provides transaction services, money can in principle be neglected for a stabilizing interest rate policy. Discretionary monetary policy is, however, likely to be associated with equilibrium indeterminacy, which can be avoided if interest rates are set contingent on beginning-of-period real balances.     

Foreign exchange interventions and interest rate policy in the Czech Republic: Hand in glove?

This paper studies the impact of daily official FX interventions on the Czech koruna's exchange rate vis-à-vis the euro (the German mark) from 1997 to 2002. Both the event study methodology extended with official interest rate moves and a variety of GARCH models reveal that FX interventions, especially koruna purchases, were relatively ineffective from 1997 to mid-1998. From mid-1998 to 2002, however, koruna sales turned out to be effective in smoothing the path of the exchange rate for up to 60 days. Nevertheless, the event study approach also indicates that the success of FX interventions depends crucially on the coordination of intervention and interest rate policies.     

HIGH‐FREQUENCY ANALYSIS OF FOREIGN EXCHANGE INTERVENTIONS: WHAT DO WE LEARN?

Abstract.  The high-frequency analysis of foreign exchange dynamics is helpful in order to better identify the impact of central bank interventions. Evidence robustly shows that interventions do indeed move the exchange rate level in the desired direction. Interventions increase volatility in the short run as they are regarded as information; but they can reduce volatility overall. Ways of transmission may reach beyond the signalling channel and also include the portfolio balance and a damping channel. Finally, interventions are more successful if they obey certain conditions, such as being coordinated among central banks and going with the market and fundamentals.     

人民币汇率增加弹性和参考一篮子货币汇率形成机制研究

在央行货币政策目标下,可以确定最优汇率水平及汇率水平的调整。我国外汇体制改革要建立以市场供求为基础的,参考一篮子货币的有管理的浮动汇率制度,央行的汇率目标应由人民币对美元稳定转变为参考人民币有效汇率目标,确保人民币币值的总体水平稳定。实际上,参考篮子货币,人民币对美元汇率的弹性将显著增加。央行应逐步放宽人民币对美元和非美元货币的波动幅度,人民币汇率最终将由市场供求来决定,发挥汇率配置资源的基础作用。     

Interest rate pass-through in South East Europe: An empirical analysis

This paper investigates the effectiveness of the interest rate channel in three small open economies with rigid exchange rate regimes in South East Europe – Bulgaria, Croatia and Macedonia – during the period 2000–2010. Specifically, we examine the size and speed of adjustment of bank lending rates to the changes in money market rates by employing various cointegration methods. In addition, we assess the stability of interest rate passthrough during the transition period, including the recent economic crisis. The results reveal the existence of a cointegrating relationship among some of the interest rates. We find that the long-run pass-through is far from complete with the exception of Macedonia. The shortrun adjustment of lending rates is also low and sluggish, implying that the domestic monetary policy may have a limited impact on the interest rate channel. Finally, the econometric investigation provides mixed evidence on the stability of the interest rate pass-through. Therefore, the overall findings of the paper support the view that in small open economies with rigid exchange rates the effectiveness of domestic monetary policy through the interest rate channel is quite limited.     

资本管制有效性与中国汇率制度改革

本文在利率平价框架下考察了近十年中国资本管制的效力。我们采用比较类似金融工具在国内外市场的收益率、检验未抛补利率平价理论偏差的平稳性两种方法进行分析。研究表明,尽管资本管制的效力随时间推移有所下降,但境内外美元利差的持续存在以及未抛补利率平价理论偏差的非平稳性仍然足以证明中国的资本管制基本有效。资本管制的有效性在盯住制框架下确保了汇率稳定和一定的货币政策自主性,并且使未来汇率制度弹性化改革可以渐进地推进。     

Real Balances, the Price Level and the Unit of Account

A bstract It is argued that Patinkin's introduction in his 1956 book of the stability analysis of the price level resulted in great measure from his reading of Wicksell's 1898 Interest and Prices. Both Patinkin and Wicksell based their treatments of the stability of the price level on what Patinkin used to call the "real balance effect." That effect, however, does not operate under Wicksell's assumption of a competitive "pure credit economy", where all transactions are carried out by bookkeeping transfers, and the unit of account is the same unit in which the accounts of banks are kept. In that case, Patinkin showed in the second (1965) edition of his book that the real balance effect–and, by that, the stability of the price level–would still be a feature of the system if profit maximizer banks held reserves, created by the central bank to settle temporary imbalances at the clearinghouse. According to Wicksell, on the other hand, a pure credit economy should consist of a central bank that attracts and remunerates deposits at the same interest rate charged for its loans, plus profit maximizer financial intermediaries that lend money for risky projects. The basic rate of interest set by the central bank decides, accordingly, the price level in such an economy. Wicksell's and Patinkin's approaches differ from the view put forward in the 1980s by the so-called "new monetary economics" that the key to price level stabilization is the separation of the function of money as the unit of account from its function as the medium of exchange in pure accounting systems of exchange.     

EXCHANGE RATE TARGET ZONES: A SURVEY OF THE LITERATURE

This work selectively reviews the literature on exchange rate target zones and their theoretical and empirical methodologies and examines whether they can be used to clarify to what extent this type of exchange rate regime could contribute to greater exchange rate stability. We discuss the main contributions of the first and second generations of exchange rate target zone models. In an attempt to reconcile the poor empirical performance of the Krugman model with the reality of exchange rate target zone regimes, this line of research integrates target zones with alternative underlying economic models, such as imperfect credibility, intra‐marginal interventions and sticky price models. It was thus possible to understand the correlations observed between the exchange rate, its fundamentals determinants and the interest rate differential, and to explain the fact that the statistical distribution of the exchange rate is hump shaped rather than U shaped. This implies that the initial emphasis of target zone models on nonlinearities, ‘honeymoon effect’, ‘smooth pasting’ and marginal interventions has vanished. Exchange rate target zones are better described as similar to managed floating regimes with intra‐marginal interventions, with some marginal interventions when the exchange rate reaches the edges of the floating band.     

Unconventional government debt purchases as a supplement to conventional monetary policy

In response to the Great Financial Crisis, the Federal Reserve, the Bank of England and many other central banks have adopted unconventional monetary policy instruments. We investigate if one of these, purchases of long-term government debt, could be a valuable addition to conventional short-term interest rate policy even if the main policy rate is not constrained by the zero lower bound. To do so, we add a stylised financial sector and central bank asset purchases to an otherwise standard New Keynesian DSGE model. Asset quantities matter for interest rates through a preferred habitat channel. If conventional and unconventional monetary policy instruments are coordinated appropriately then the central bank is better able to stabilise both output and inflation.