The Working of the Currency Board: The Experience of Hong Kong 1935–1997

Hong Kong had twice adopted, in its modern monetary history, the currency board system: the first in November 1935, and the second in October 1983. This article provides an analysis of the modus operandi of Hong Kong's version of currency board, as well as an appraisal of its advantages and disadvantages.     

An Optimal Currency Basket to Minimize Output and Inflation Volatility: Theory and an Application to Hong Kong

In this paper we develop a theoretical model of an optimal currency basket for a small open economy. A currency basket for the home economy is defined as a chosen weighted average of a subset of foreign currencies, and an optimal currency basket is taken to be one that minimizes a given weighted average of the expected output volatility and expected inflation volatility. This theoretical model is then applied to Hong Kong, which has adopted a currency board system for close to 30 years. We estimate an optimal currency basket for Hong Kong and compare its performance with the existing currency board system as well as with currency baskets whose weights are given by export and import trade shares.     

香港联系汇率制度的现实启示及未来挑战

本文针对香港联系汇率制度的形成历史以及原因,总结出香港的联系汇率制度形成的偶然性申的必然性,分析香港联系汇率割度的优势和弊端,以及此项制度对于香港金融市场的重大意义。针对日新月异的国际资本市场,香港也面临着挑战,香港也必须与时俱进,加强和人民币之间的联系,进而形成合理的汇率机制。本文最后勾画了香港汇率制度未来的发展前景。     

An investigation into the credibility of currency board arrangements in Bosnia and Herzegovina and Bulgaria

Currency Boards are usually argued to increase the credibility of the monetary authority, although this effect ultimately depends on the economic, political and institutional circumstances in the specific country. Few studies have previously been able to address this issue empirically. Using a novel database, the analysis conducted in this paper finds that, other things being equal, the credibility of the monetary authority is likely to be higher in those European transition countries with currency board arrangements, namely Bosnia and Herzegovina and Bulgaria. The results also suggest that currency board arrangements are more likely to increase the credibility of the monetary authority in countries with a low level of trust in government and a weak economy. These findings imply that the maintenance of currency board arrangements in recent years in Bosnia and Herzegovina and Bulgaria may have been advantageous.     

The Case for Adopting the Convertible Reserves System in Hong Kong

The East Asian currency crisis spread to Hong Kong in October 1997, touching off worldwide repercussions. Weaknesses were revealed in the operational mechanism of Hong Kong's linked exchange rate system (the link). This paper casts the link as a peculiar currency board system in the proper historical and comparative contexts. After examining the conflict between the classical currency board (which relies on the two "automatic" stabilizers of specie-flow and cash arbitrage) and modern financial developments, it is pointed out that Hong Kong should move forward to the convertible reserves system of Argentina, Estonia and Lithuania (the AEL model), and adopt its cashless/electronic arbitrage arrangement to defend the link. Moreover, it is necessary to balance the need for short-term stability and the consideration of long-term flexibility. Any measure that increases the ultimate exit cost from the link must be assessed carefully.     

Exchange Rate Volatility and Macroeconomic Performance in Hong Kong

The paper presents evidence on whether Hong Kong’s currency board arrangement, in place since 1983, has affected the volatility of real macroeconomic variables. Simple evidence on the relative volatilities of relevant macroeconomic variables before and after 1983 is presented, before a more formal econometric framework is utilized to examine the linkages between the exchange rate and the real economy. It is found that the currency board period has been one of relative stability in Hong Kong, though it has also been a period where external factors have been relatively benign. Even after controlling for the external environment, it is found that the currency board period is one of low macroeconomic volatility.     

Monetary Policy in a Very Open Economy: Some Major Analytical Issues

This paper develops three considerations relevant to the possibility of modification of the Hong Kong currency board system for conducting monetary/exchange‐rate policy. The first concerns the system employed by Singapore, an economy similar in several ways to Hong Kong's, whereby the exchange rate is adjusted periodically in activist response to inflation and output developments. The second concerns a generalization, one that calls for adjustments of a weighted average of exchange rate and interest rate instruments, so designed to be effective whether the economy is, or is not, in a liquidity‐trap situation. Finally, the third topic concerns political‐economy aspects of policy, which tend to incline against the use of the activist systems.     

人民币区域接受程度： 指数构建与影响因子计量 ——以东盟及中国香港为例

金融危机以来,改革现有的国际货币体系,逐步推进“去美元化”进程,已是国际社会共识。周边化及区域化是人民币国际化进程中的重要阶段,建立人民币区域接受程度监测指标体系,具有重要意义。本文基于对东盟及中国香港人民币使用情况的分析,提出人民币区域接受程度指数的构建框架并进行影响因子的计量分析,实证结果表明：(1)在政策推动及市场需求双重作用下,未来东盟人民币接受程度将持续提升,但短期内受经济政治影响会出现较大反复;(2)受政策推动、存款规模较小以及贬值预期影响,中国香港人民币贸易接受程度的提升快于金融接受程度,提高人民币存款占比有助于提升人民币接受程度;(3)中国香港经济状况对人民币接受程度的影响力要高于内地,反映出货币国际化是市场自发选择的过程;(4)由于货币替代影响双边货币政策效果,中国香港通胀水平、利率以及内地通胀水平会受中国香港人民币接受程度的反向影响。     

Currency Substitution Between the Hong Kong Dollar and the Renminbi in South China

The present paper estimates the demand for the Hong Kong currency circulating in the Guangdong Province of China and Macau. The amount of Hong Kong dollars circulating in the Guangdong (Macau) region is reckoned to be 7.4 (3.2) percent of the total amount issued in Hong Kong. The estimated coeficients in the currency demand equation suggest that the Hong Kong currency in Guangdong is used mainly for transactions. Therefore, in spite of strong evidence of currency substitution of the Renminbi with the Hong Kong Dollar, its impact on the exchange rate and on the international reserves of Hong Kong during currency crisis should be minimal.     

Does the currency board matter? US news and Argentine financial market reaction

Using a Generalized Autoregressive Conditional Heteroscedasticity (GARCH) model, we study the effects of the US monetary policy and macroeconomic announcements on Argentine money, stock and foreign exchange markets over the period January 1998 to July 2007. We show, first, that both types of news have a significant impact on all markets. Second, there are noticeable differences in reaction for different subsamples: Argentine money markets were more dependent on US news under the currency board than after it was abandoned as the floating exchange rate partly absorbs spillover effects from the US. Finally, we find that the US-dollar-denominated assets react less to US news than peso-denominated assets, which suggests that the currency board was not completely credible during its final years.     

An Intertemporal Currency Board

The paper shows that the traditional wisdom of raising interest rates to defend a currency enriches rather than punishes the speculators. Furthermore, using high interest rates as a currency defense tool often produces the opposite effect in times of crisis. A new approach is proposed of using Hong Kong dollar "put" options as an explicit commitment by the government. The put option itself acts like an intertemporal currency board in keeping the linked exchange rate over time. This costly signaling produces a separating equilibrium that distinguishes the strength of the Hong Kong dollar from the other Asian currencies that were under pressure in 1997.     

A synthesized discussion on the Macao monetary reform

The prolonged RMB appreciation affects Macao deeply and requires a major monetary reform without further delay. What we propose for Macao reform as an optimal choice includes shifting its monetary anchor to the strong RMB, revaluing its domestic currency to the original level, and setting up a sovereign wealth fund for autonomous growth. This proposal is based on Macao’s economic fundamentals such as trade competitiveness, business relations, real welfare, monetary stability, and genuine development. We also recommend a monetary union of Macao with Hong Kong as the 2^nd-best choice of reform by introducing what we term the SAR dollar.     

MACROECONOMIC VOLATILITY AND COUNTERFACTUAL INFLATION‐TARGETING IN HONG KONG

The present paper evaluates macroeconomic adjustment in Hong Kong with an estimated dynamic stochastic general equilibrium (DSGE) model under a fixed exchange rate regime. We find that exports and world inflation shocks are the dominant sources of GDP volatility, with the risk premium taking on importance during the Asian crisis after 1997. A counterfactual simulation, assuming a flexible exchange rate regime with inflation targeting, shows that inflation would have decreased slightly, but interest‐rate volatility would have increased significantly. The welfare gains from switching out of the currency board system appear to be marginal.     

Three measures of East Asian currency evaluation

One of the prominent explanations for the East Asian financial crises of 1997 relies upon East Asian currency overvaluation. However, most empirical studies of these crises do not undertake serious examination of whether these currencies were overvalued. In this article, three major approaches to identifying the equilibrium exchange rate are implemented: long-run purchasing power parity (PPP), a productivity-based model, and a monetary model of the nominal exchange rate. The PPP calculations indicate that as of May 1997, the Hong Kong dollar, baht, ringgit, and peso were overvalued, and the won undervalued. In a framework that explicitly accounts for the role of productivity, substantial overvaluation of the peso is detected, but an undervaluation of the won is also uncovered. Misalignments of the ringgit and baht are small. Finally, the estimated equilibrium rates from a monetary model do not imply much deviation from short-run equilibrium at the end of June 1997. A conclusion of substantial overvaluation on the eve of the East Asian currency turmoil is not very plausible, suggesting that some alternate mechanism for generating crises - other than one involving the conventional macroeconomic fundamentals - was at work.     

人民币与港币一体化刍议

本文比较了人民币与港币一体化的成本效益，分析了两地货币一体化的现实基础和障碍，设计了人民币和港币货币一体化的模式，提出了相应的实施步骤和配套改革的对策建议。     

The Choice Between Flexible Exchange Rates, Capital Control and the Currency Board in Asian Countries: A Perspective from the "Impossible Trinity"

We attempt to compare adjustment costs under exchange rate regimes in East Asian economies during their recovery processes. The criteria are the degree of overshooting in exchange rates, the changes in country risks, and the severity and duration of the recovery processes. Linear ranking is difficult. Managed rates with capital control worked for macroeconomic performance despite the welfare loss due to blocking capital flows. The currency board system worked well for stability, but recent experiences of Argentina and Hong Kong were deflationary. Under flexible rates, many economies that received IMF grants suffered a drastic initial downturn but later recovered vigorously. JEL Classification Numbers: F31, F32, F33.     

Impact of US monetary policy rate shock and other external shocks on the Hong Kong economy: A factor‐augmented vector autoregression approach

This paper uses the factor‐augmented vector autoregression framework to study the impact on the Hong Kong economy of the diverging monetary policies by the Fed, the European Central Bank (ECB) and the Bank of Japan as well as the slowdown of the Mainland economy. The empirical results show that shocks in US monetary policy rate mainly affect interest rate‐sensitive sectors in Hong Kong and that monetary easing from the European Central Bank and the Bank of Japan somewhat offsets the impact of tightening of the Fed. The transmission of external shocks is through trade and capital markets. Real variables such as real GDP growth and the unemployment rate are more sensitive to the economic slowdown in Mainland China. It is estimated that the combined effect of the four external shocks will on average lower Hong Kong's quarterly GDP growth by 0.6 percentage points and quarterly inflation by 0.2 percentage points in the first four quarters. However, Hong Kong's financial stability, particularly with regard to loan quality, banks’ capital and liquidity, is well maintained by macroprudential policies, suggesting that Hong Kong's financial system is resilient to external shocks.     

International Capital Movement and Monetary Independence in Asia

In this paper, we investigate the extent of monetary independence in a group of ten Asian countries: China, Malaysia, Japan, India, Indonesia, Philippines, Thailand, Korea, Singapore, and Hong Kong. While the traditional investigation has considered only the bivariate relationship between the home interest rate and the base rate, we employ both single-equation and vector autoregressive representations of the bivariate and the trivariate relationship including the desired (or optimal) interest rate. We find in most countries, that the ranking of monetary independence is relatively consistent across the models and methodologies although model specifications produce important differences for some countries such as Japan, Indonesia, and India. Trilemma suggests that a country cannot accomplish all three policy objectives: monetary independence, exchange rate stability, and free capital mobility. To increase monetary independence a country must choose between greater exchange rate flexibility or a lower degree of capital mobility. The fact that China and Malaysia, the two countries that are known to have imposed the strictest capital controls, consistently rank high in various scenarios while Hong Kong, which has maintained nearly the freest regime in capital markets, is lowest in monetary independence, indicates that perhaps capital controls may play a more important role than does exchange rate flexibility in securing independence in monetary policy making. On the other hand, countries that maintain greater exchange rate stability do not necessarily rank low, unless it is combined with greater capital mobility as in the case of Hong Kong.     

Volatility of fundamental variables under different exchange rate system--a simple test for Hong Kong

This paper presents a comparison in the changes of Hong Kong macroeconomic fundamental variables before and after its currency was ‘pegged’ to the US dollar in October 1983. Using a simple method from Flood and Rose (1995) and Baxter and Stockman (1989), this paper compares the volatilities of all aggregate variables used by those investigators in so far as these data are available for Hong Kong. The results show, contrary to the dominating empirical literature for the G-7 countries, that the volatilities of more than half of the nominal and real variables under the float are significantly higher than those under the link.     

AN ANALYSIS OF HONG KONG EXPORT PERFORMANCE

Abstract.  The study models the Hong Kong domestic exports and re-exports, compares the performance of exports to the rest of the world, the USA and Japan, and uses destination-and-export-type specific unit value indexes to construct real exchange rates. In general, Hong Kong exports display mean-reverting dynamics, are positively influenced by foreign income and are adversely affected by high value of its currency. The lagged export variable, foreign income, and real exchange rate provide most of the explanatory power. Other variables explain marginally the variability of Hong Kong exports.