Moreover, when considering the uncertainties implied by the transition to Stage Three of EMU, we should not forget that Monetary Union will also reduce, or even eliminate, a number of risks. This has already been demonstrated, even before the actual introduction of the euro. Recent turmoil in international financial markets did not cause any significant disruption to exchange rates among currencies of the designated participants in Stage Three. This is a clear demonstration of the success of the EMU process.
Today, I will address the role of monetary policy in EMU.
First, I will make reference to the final goal of monetary policy - the maintenance of price stability.
Second, I will discuss some important issues relating to the design and implementation of the monetary policy strategy at the outset of Stage Three of Monetary Union; and
Finally, I will describe some features of the operational framework of the ESCB that have recently been finalised.
Let me begin by discussing the over-riding priority we attach to the maintenance of price stability.
2. The priority of price stability
The Treaty on European Union - the Maastricht Treaty - stipulates that the "primary objective of the ESCB shall be to maintain price stability". It was left to the ESCB to provide a quantitative definition of this primary objective. At the ECB's precursor, the European Monetary Institute (EMI), it was agreed that, in the interests of transparency and accountability, the ESCB's chosen operational definition of price stability should be announced publicly. This announcement would form an important element of the overall monetary policy strategy. Simply defining price stability leaves open the question of why price stability is desirable. As a central banker, the benefits of price stability appear self-evident. Any single argument in favour of price stability cannot comprehensively describe the benefits that it brings.
For instance, concerning the United States, Martin Feldstein has recently shown that, in combination with taxes and social contributions, even quite modest rates of inflation can cause considerable real economic losses. Research at the Bundesbank has produced similar results for Germany.
But elimination of the losses caused by this channel is only one illustrative example among the many benefits of price stability. The greatest contribution that the ESCB can make to the euro area's output and employment performance is to achieve and maintain the stability of prices. Stable prices are at the core of the 'stability culture' we are trying to create in Europe, a culture that is the foundation of sustainable and strong growth in the standard of living for Europe's citizens.
At the same time, the ESCB does not operate in a vacuum. Monetary policy needs to be supported by an appropriate fiscal policy and necessary structural reforms implemented at the national level if this 'stability culture' is to be built on solid and sustainable foundations. The private sector also has its part to play, notably by exercising wage moderation, given the high levels of structural unemployment in the euro area. Progress on all these dimensions is not only desirable, but also absolutely necessary. Monetary policy alone cannot ensure strong, non-inflationary growth and improved employment prospects throughout the euro area. However, only a monetary policy focussed closely on the achievement of price stability can lay the basis for these conditions.
Of course, that is not to say that the ESCB can, or should, ignore broader macroeconomic considerations. For instance, the threats posed by deflation in combination with nominal rigidities to the real economy have to be taken into account. In order to prevent any misunderstanding, let me be very clear: my discussion of deflation has to be seen in the context of the formulation of an optimal definition of price stability for the ESCB that takes into account deflationary dangers. These dangers certainly cannot be ruled out and our definition of price stability should reflect them. However, simply recalling the current rate of inflation in the euro area - 1.2% - shows that deflation is not an immediate concern for policy-makers.
While periodic and transitory falls in the price level may be normal, and should not give rise to major concerns, a prolonged deflation is clearly inconsistent with any meaningful definition of price stability. Moreover, since nominal interest rates cannot fall below zero, a prolonged deflation may render the interest rate policy of the central bank rather ineffective. What remains is out-right purchases of assets - both foreign and domestic.
Similarly, the ESCB cannot ignore the implications of nominal rigidities in wages and prices for the transmission mechanism of monetary policy. If we were to live long enough under a regime of stable prices, I would not exclude the possibility that wage and price setting behaviour would adapt, and nominal rigidities would finally disappear. This would reduce some of the potential output costs of fighting inflation, and thus increase the net long-run benefits of price stability. However, for the time being we may have to live with these rigidities and take their effects into account when deciding on our monetary policy strategy.
In this respect, the present situation is not easy for the ESCB. Unemployment in the euro area is currently very high.
However, in contrast to these persistently high levels of unemployment - which are largely structural in origin - the prospects for maintaining price stability are currently very encouraging. Inflation expectations and long-term interest rates in the euro area are at close to historical lows. Actual area-wide inflation is also very subdued.
The current low 'headline' rate of inflation has been moderated somewhat by recent falls in oil and commodity prices, themselves stemming, in part, from the economic and financial crises in Asia and, more recently, in Russia. However, this effect on inflation has been largely off-set by the impact of indirect tax rises in a number of participating countries, which have raised consumer prices for certain goods. All in all, the changed external environment contributes to an overall outlook of very subdued inflationary pressures.
In defining price stability, one might ideally refer to a conceptual measure of 'core' inflation that tries to isolate monetary effects on the price level - for which the ESCB is properly responsible - from such terms of trade or indirect tax shocks, over which it has little immediate control.
In our month-to-month communication with the public, 'core' measures of inflation may prove useful. But, in its preparatory work for Monetary Union, the EMI recognised that any sensible definition of price stability for the euro area would have to be based on a comprehensive and harmonised price measure. 'Core' measures of inflation typically exclude some items. They are unlikely to be comprehensive enough to satisfy the requirements of an index suitable for a sensible public definition. These considerations point to using the 'headline' measure of the harmonised index of consumer prices (or HICP) for the euro area in the definition of price stability.
Finally, the ESCB needs to build on the success of its constituent national central banks (NCBs) in reducing inflation and achieving price stability during the convergence process in Stage Two of EMU. Given the current generally benign inflation outlook in the euro area that is the product of these accomplishments, there is an understandable desire to 'lock-in' the current success in achieving price stability as well as the apparent credibility of monetary policy, and ensure continuity with existing central bank practice.
3. The importance of the monetary strategy for a successful start of European monetary policy
When price stability is defined using the principles just outlined, how should the ESCB proceed to maintain it? In achieving and maintaining price stability - the primary objective of the Treaty - the choice of monetary policy strategy is vital.
Within the ECB, a considerable amount of work on the monetary policy strategy has already been completed, building to a large extent on the substantial earlier preparatory work of the EMI. A high degree of consensus has been reached among the NCBs and within the ECB about the main outlines of the strategy - I will address some of these areas of agreement in a moment. The final decision has not yet been made. But you should be reassured that progress is being made at a good pace. I have no doubt that we will be in a position to announce the details of the ESCB's monetary policy strategy in good time, prior to the start of Stage Three.
Being a new institution, the European Central bank must be prepared to come under intense scrutiny right from the start. In particular, the international financial markets will monitor its every decision like hawks. Facing this environment in the run-up to Monetary Union, the ESCB must ensure that everything possible is done to make the launch of Stage Three as tension-free as is possible. Choosing and announcing an appropriate monetary strategy is crucial.
The monetary policy strategy is, in the first place, important for the internal decision-making process of the ESCB - how the Governing Council will decide on the appropriate monetary policy stance, given the economic environment. Above all, the ESCB strategy must lead to good - that is to say, timely and forward-looking - monetary policy decisions.
But the strategy is also of the utmost significance in communicating with audiences outside the ESCB. It should stabilise inflation expectations. The more the strategy helps to promote credibility and confidence in the ESCB's monetary policy at the outset of EMU, the more effective that policy will be - and the easier the ESCB's task of maintaining price stability will become.
In deciding upon the appropriate monetary policy strategy, the following aspects must be seen as essential requirements. The strategy must:
* reinforce the ESCB's commitment to price stability, the
primary and over-riding task stipulated by the Treaty;
* it must clearly signal the anti-inflationary objectives of
the ESCB, and serve as a consistent benchmark for the
monetary policy stance; and,
* it must be transparent and explained clearly to the general
public - only then can the strategy serve as a basis for the
ESCB's accountability to the public at large.
The realisation that achievement of an optimal, non-inflationary macroeconomic outcome may founder on the private sector's distrust has been central to the monetary policy debate of the nineteen-eighties and 'nineties. The search for answers to the questions raised by this debate has spawned an enormous economic literature. The keywords "time inconsistency" and "credibility" draw forth an almost unmanageable flood of publications that have appeared in the wake of the pioneering contributions of Kydland / Prescott and Barro / Gordon.
The need to establish a credible and consistent monetary strategy in the face of the well-known time inconsistency problem faced by policy makers - the dilemma highlighted by this economic literature - is especially important for the ESCB at the outset of Monetary Union. As a brand new institution, the ESCB will have no track record of its own.
Building its reputation, and the associated credibility of monetary policy, is vital. But the process of doing so is complicated by the relatively high level of uncertainty surrounding the transition to Monetary Union itself. The transition to Stage Three is a unique event, and will create unique opportunities for many - but it will also create some unique problems for monetary policy makers. At the ECB, we are addressing these problems and are confident that the risks can be managed successfully. Many of the difficulties we face will be overcome through our own efforts over the coming months.
Among these problems are the difficulties involved in creating a comprehensive and accurate database of euro area-wide statistics. Running a single monetary policy for the euro area requires timely, reliable and accurate euro area data. In some cases, the euro area statistics simply did not exist until quite recently. In others, the statistics are based on new concepts, and the properties of the data series are not yet well known. The long runs of high quality back-data required for empirical economic analysis may be unavailable. Those that do exist are likely to have been constructed using some degree of estimation and judgement, possibly rendering the econometric results produced with them questionable.
Furthermore, the regime shift associated with the adoption of the single monetary policy may change the way expectations are formed in the euro area, and thereby alter forward-looking economic behaviour. Monetary policy's effects on consumption, investment, and wage bargaining - and therefore the whole transmission mechanism of monetary policy to developments in the price level - would be among the important economic relationships to be affected in this way.
This may be no bad thing. Indeed, using the regime shift implied by the transition to Stage Three to change both public and private sector behaviour in favourable directions may be one of the largest gains that the euro area can extract from Monetary Union. Nevertheless, these changes are likely to complicate the implementation of certain important elements of a monetary strategy, at least in the short term, as past relationships between macroeconomic variables may break down. What is good for the euro area economy as a whole may create some practical problems for the ESCB.
One example of this so-called 'Lucas critique' phenomenon is the impact of current, very low rates of inflation on private behaviour. For many countries participating in Monetary Union, there is simply no - or only very recent - experience of how the private sector will behave in an environment of sustained and credible low inflation. Instability in past relationships may result, should behaviour change in this new, low inflation environment. I have already argued that these structural changes will benefit Europe's citizens - price stability will allow markets to work more efficiently, thereby raising growth, and improving employment prospects. But these changes may also complicate the ESCB's assessment of economic and financial conditions.
These uncertainties - arising directly from the transition to Stage Three itself - are both compounded by, and inter-related with, the broader economic context in which Monetary Union will be established. The increasing internationalisation of the global economy, and the current rapid pace of technological change, have affected all sectors of the economy, and the banking and financial systems in particular. For example, at present there are many, inter-related innovations in the payments system, such as:
* the introduction of TARGET (directly related to EMU itself);
* greater technological sophistication of payments mechanisms,
as use of computers and information technology becomes more
widespread and advanced;
* the additional incentive for cash-less payments that may
arise from the fact that for some time to come -
approximately three years - the new euro-denominated notes
and coin will not come into circulation. In particular,
narrow monetary aggregates might be affected by this
development; and,
* increased competition among banks and settlements systems,
arising from globalisation and the breakdown of barriers
between previously segmented national markets, which may
drive down the margins and fees charged to customers.
At the ESCB we will need to keep abreast of these developments, both for their immediate impact on one of our "basic tasks" - promoting the smooth operation of the payments system - and because of their broader implications for the euro area economy. Reducing transactions costs in the way I just described will benefit European consumers and producers - but it may also change the indicator properties of monetary, financial and economic variables that national central banks have looked to as guides for monetary policy in the past.
Finally, in Monetary Union there will be some heterogeneity across countries within the euro area. Europe's diversity is one of its greatest assets. But this diversity is greater than is typically the case between different regions in the same country using a single currency. Nevertheless, the ECB Governing Council will have to concentrate on monetary and economic developments in the euro area as a whole when discussing and taking monetary policy decisions.
How should a monetary policy strategy be selected in this - for monetary policy makers, at least - potentially difficult environment? The EMI outlined a number of 'guiding principles' for the selection of a monetary strategy by the ESCB. Foremost amongst these was the principle of 'effectiveness'. The best monetary policy strategy for the ESCB is the one which best signals a credible and realistic commitment to, and ensures achievement of, the primary objective of price stability.