The discipline of floating exchange rates is quite different to that of a pegged exchange rate system. No longer is the exchange rate itself the anchor of monetary credibility. Instead, the conventional wisdom has moved towards inflation targeting through interest rate policy as the anchor of monetary credibility. As a result, the emphasis has shifted importantly away from the exchange rate regime and in favour of central banks in seeking to maintain both internal and external price stability. This move from the certainty of an exchange rate as the monetary anchor of credibility to the uncertainty of a central bank’s monetary discipline is very much a leap of faith, and it can take a considerable period of time for a central bank to gain the respect needed of the global financial markets to pursue that discipline with the minimum of market instability. This is as true for the developed economies as it is for the emerging markets. For instance, it took the German central bank, the Bundesbank, over 30 years to achieve the revered status it had during the 1990s when German bond yields finally fell below those of th US for a sustained period of time. Further, a central bank’s monetary credibility is hard won but easily lost.
In the emerging markets also, as with the broader trend, there has been a general move away from targeting the exchange rate towards targeting inflation. This is of course particularly evident within the EU accession candidates such as the Czech Republic, Poland and Hungary, which in any case have to adopt some form of inflation targeting to ensure that their inflation rates do not exceed EU/Euro entry rules. However, inflation targeting is also now present in Latin America and Asia.
The presumed premise behind this is that as the emerging markets continue to participate to an increasing degree in the global economy and in the global financial markets, so they will be increasingly judged by the most efficient economy of that global economy, the United States, and have to adopt its economic policies, such as inflation targeting. This is richly ironic since in fact the US has no formal inflation target. Indeed, it is not too much to suggest that the official community in Washington, led by the IMF, is in many cases demanding economic policies (as quid pro quos for new loans) that would simply not be acceptable in the industrial countries. Granted, this picture is not entirely negative. Inflation targeting frameworks are usually characterized also by a greater degree of policy transparency and accountability. Inflation targeting also allows some degree of discretion in the setting of the inflation target, but thereafter little latitude in missing it. Broadly put, financial markets “reward” administrations — through lower bond yields — that meet their inflation targets and punish those that do not. Any student of international economics knows the classical argument by Milton Friedman for price flexibility:
if there is a change in economic conditions, the fastest and most efficient way of expressing this necessary adjustment is through the external price — the exchange rate — rather than through a large number of domestic prices. The analogy that Friedman used in 1953 to explain this was daylight saving time; that is, it is easier to move to daylight saving time than to coordinate a large number of people and move all activities one hour.
The basic argument in favour of flexible exchange rates is that it makes it easier for an economy to adjust to external shocks, such as a dramatic change in commodity prices which in turn triggers a change in the trade balance. A flexible exchange rate also allows the central bank to devote its energies to seeking to maintain domestic monetary stability rather than focusing on the external price. Of course, this is the theory. In practice, many central banks still try to focus on the exchange rate and not just to the extent that it affects domestic inflation. In principle, however, the central bank’s focus on internal price stability frees it from the obligation of targeting the exchange rate.
Freely floating exchange rates also have a downside, most notably in that they can be volatile and also on occasion can significantly overshoot anything approximating fundamental value. This in turn can hurt the real economy. To return to Churchill’s description of democracy, freely floating exchange rates are far from perfect, but they have so far proved better and more resilient than anything else on offer. That said, although a freely floating exchange rate system is probably the best and most flexible system on offer over the long term, there are specific economic factors that can determine which type of exchange rate system may be appropriate in the short to medium term:
Size/openness of the economy — If an economy is very open to external trade, the economic costs of currency instability are likely to be a lot higher than if this is not the case. For instance, in the wake of the Asian crisis, the structural damage to the likes of India was far less than to Korea or Thailand, not least because trade is a far smaller proportion of the Indian economy. In turn, this may suggest that it may be appropriate over the short to medium term for small open economies, such as Hong Kong or Singapore, to have either fixed or managed exchange rate regimes.
Inflation — If a country has a higher inflation rate than its trading partners, its exchange rate needs to be flexible (i.e. floating) in order to maintain trade competitiveness. Indeed, the law of PPP requires that its exchange rate depreciates to offset this higher inflation rate.
Labour market flexibility — The more rigid the wage structure within the economy, the greater the need for exchange rate flexibility to act as a buffer against real economic shocks.
Capital mobility — The general rule is that the more open an economy is to capital flow, the harder it is to sustain a fixed exchange rate system. The only exception to this is if a country adopts a currency board and relinquishes monetary independence.
Monetary credibility — The stronger the credibility of a central bank, the less the need to peg or fix the exchange rate, and vice versa. The relationship between the monetary credibility of a central bank and the trust of the financial markets is very much a confidence game. As we saw earlier, it usually takes a considerable period of time for central banks to build that relationship and that trust with financial markets.
Financial development — The degree of financial development, particularly with regard to the domestic financial system, may be a consideration when choosing a type of exchange rate regime. For instance, immature financial systems may not be able to withstand the volatility inherent in freely floating exchange rates.