This paper uses the business cycle synchronization criteria of the theory of optimum currency area (OCA) to examine the feasibility of the East African Community (EAC) as a monetary union. We also investigate whether the degree of business cycle synchronization has increased after the 1999 EAC Treaty. We use an unobserved component model to measure business cycle synchronization as the proportion of structural shocks that are common across different countries, and a time-varying parameter model to examine the dynamics of synchronization over time. We find that although the degree of synchronization has increased since 2000 when the EAC Treaty came into force, the proportion of shocks that is common across different countries is still small implying weak synchronization. This evidence casts doubt on the feasibility of a monetary union for the EAC as scheduled by 2012.

The East African Community (Burundi, Kenya, Rwanda, Tanzania and Uganda) has a goal of a currency union, as part of a movement toward eventual political union. A key factor in making a currency union desirable is a high level of business cycle synchronization (BCS) among member countries. In this paper we undertake a new approach to this topic with a recently developed set of tools. These tools have the advantage of yielding time-varying estimates, and, unlike previous metrics, allow us to gauge both differences of the phase of the business cycle between countries and differences in business cycle amplitude. We find BCS among the five countries does compare reasonable well with that found for euro zone nations before euro adoption. However, given the euros' difficulties, this is not strong evidence in favor of the desirability of a currency union. Moreover, Rwanda appears less well-suited, in terms of BCS, than the other four countries. In addition, all five nations have experienced sharp drops in BCS in recent years. Lastly, there has been no significant increase in BCS since the 2000 EAC Treaty, or the 2005 customs union. Overall, our results cast doubt on the desirability of an East African currency union.

This paper examines how susceptible East African Community (EAC) economies are to asymmetric shocks, assesses the value of the exchange rate as a shock absorber for these countries, and reviews adjustment mechanisms that would help ensure a successful experience under a common currency. The report draws on analysis of recent experiences and examines likely future changes in the EAC economies.

This review summarises a survey of about 70 empirical studies on proposed African monetary unions published during the past fifteen years. Four main strands are outlined in four tables. They include the: (i) West African Monetary Zone (WAMZ), (ii) East African Monetary Union (EAMU), (iii) Southern African Monetary Union (SAMU) and (iv) African Monetary Union (AMU). A number of concerns are apparent from the feasibility and/or desirability of potential monetary unions. They are variations in: empirical strategies, selection of variables, considered periodicities and sampled countries. The Hegelian dialectics are used to establish selective expansion as the predominant mode of monetary integration. Some studies make the case for strong institutions and pegs as alternatives to currency unions. The employment of cluster analysis, distinguishing shocks from responses in the examination of business cycle synchronisation and the disaggregation of panels into sub-samples provide more subtle policy implications.

Turmoil in euro area once more forces EU authorities to rethink future of further monetary integration. One of the most commonly used criterions for successful monetary in contemporary research is business cycle synchronization (BCS). Though BCS has been vastly described at country level, not as much attention has been put on the degree of BSC at regional level. Topic is important for 2 main reasons. The first is that determining degree of BCS at regional level can help in assessment of monetary policy effectiveness at country level, as well as giving point of reference for evaluation of perspective costs of participation in monetary union. The second is that there is theoretical dispute within the optimum currency areas literature between 'European Commission' and "Krugman" view that can be resolve a great deal trough regional analysis. In order to assess BCS in EU Hodrick-Prescott, as well as Christiano and Fitzgerald filter to time series of real GDP for 24 countries, 82 NUTS 1, 242 NUTS 2 and 1264 NUTS 3 regions over the period of 1998-2010. Data was later used to create bilateral measures of BSC, which gave 276 observations on country level, 3321 on NUTS 1, 29161 on NUTS 2 and 798216 on NUTS 3 level. Results of the analysis support "European Commission" view and show very high degree of BSC within EU countries. Country level analysis also reveals that within the EU there exist group of countries that could form effectively working monetary union based on BCS criterion.

This study provides a survey of recent advances in the literature on proposed African monetary unions. The survey comprises about 60 empirical papers published during the past fifteen years. Four main strands are discussed individually and collectively, notably, the proposed: West African Monetary Zone (WAMZ), East African Monetary Union (EAMU), Southern African Monetary Union (SAMU) and African Monetary Union (AMU). We observe a number of issues with establishing the feasibility and/or desirability of potential monetary unions, inter alia, variations in: choice of variables, empirical strategies, sampled countries and considered periodicities. We address this ambiguity by reviewing studies with scenarios that are consistent with Hegelian dialectics and establish selective expansion as the predominant mode of monetary integration. Some proponents make cases for strong pegs and institutions as viable alternatives to currency unions. Using cluster analysis, disaggregating panels into sub-samples and distinguishing shocks from responses in the examination of business cycle synchronisation provide more subtle policy implications. We caution that for inquiries using the same theoretical underpinnings, variables and methods just by modifying the scope/context and periodicity may only contribute to increasing the number of conflicting findings. Authors should place more emphasis on new perspectives and approaches based on caveats of, and lessons from the European Monetary Union (EMU) and CFA zones.