Effect of International Clearing Union on exchangemarket pressure: A case of Asian Clearing Union

摘要

Purpose - The purpose of this paper is to enhance our understanding of effects of International Clearing Unions on the exchange market pressure (EMP). Using Asian Clearing Union (ACU) as an example of a typical International Clearing Union, the authors infers that ACU has not been very successful in synchronizing the EMP in the region. Other countries that are not members of such clearing union but are interested in monetary cooperation with other countries should consider the behavior of their EMP indices before attempting any form of integration. The study also provides a generic methodology for using EMP as an indicator for predicting the feasibility of monetary cooperation across countries. Design/methodology/approach - An EMP model using the median absolute deviation is derived to reflect the policy preferences of each country. The weights for change in foreign reserves and interest rate differential are derived using analytical models. The index is then applied to ACU as a case study using monthly data from 2006 to 2015 for Bhutan, Bangladesh, Nepal, India, Pakistan, Sri Lanka and Iran. The descriptive statistics are studied to find the possibility of short-run relationship between the exchange rates, foreign exchange reserves and interest rate differential. The longitudinal data set generated is checked for cointegration to evaluate the EMPs of the countries.Findings - The study finds that the EMP of ACU members' shows similarity only in short-term movement but have no cointegration of EMP indices indicating the absence of long-term relationship. The absence of long-term cointegration of EMP for ACU members also indicates that ICU membership may not necessarily lead to similarity in exchange rate policies that facilitate the formation of a currency union. Creation of an ICU is not a sufficient condition for the formation of a currency union. The study also finds that the sample countries have faced persistent depreciation pressures in the period. The preferred tool for the management of EMP is direct intervention by sale and purchase of foreign currency. Interest rate changes are found to have the most significant effect on EMP.Research limitations/implications - The EMP model limits itself only to the study of exchange rates, foreign reserves and interest rates. Exchange rate variation and policy responses there to are known to be driven by other factors such as speculation, political factors, autonomous capital flows and micro-level dynamics of exchange markets like order flows among others. The EMP model is a simplification of the market dynamics and does not look for associations on the account of these factors. The model is evaluated for only one ICU where member countries regulate exchange rates. The study of ICUs that comprises free float currencies and pegged currencies may yield different results.Practical implications - Results indicate that the member of any ICU such as ACU cannot assume that its participation will serve as a foundation for creating higher forms of economic unions such as currency unions. In the absence of any long-term relationship between the EMP of countries, any attempt by these countries may cause the exchange rates to deviate further. This leads to the conclusion that the members of ACU should avoid any attempts to form currency unions or use a common currency for its settlement.Social implications - Various countries that are considering the formation of currency union or the use of acommon currency peg may like to examine its feasibility using EMP as a tool. Using EMP, they may be ableto derive short-term and long-term strategies for pursuing their objectives.Originality/value - There are few other studies that use EMP as an index for measuring the feasibility offormation of a currency union among countries that are the member of an ICU. While earlier studies applyEMP to a group of countries, none attempt to modify the index to reflect the EMP that is likely to affect centralbank policy action. Few studies have attempted to use EMP to study the feasibility of formation of a currencyunion in South Asia based on exchange rate markets itself.