WOULD AUSTRALIA–NEW ZEALAND BE A VIABLE CURRENCY UNION? EVIDENCE FROM INTERSTATE RISK-SHARING PERFORMANCES

Faisal Rana and Faruk Balli

Contemporary Economic Policy, 2016, vol. 34, issue 3, 531-552

Abstract: type="main" xml:id="coep12130-abs-0001"> In this article, we first measure the potential welfare gains from perfect risk sharing among Australian states and New Zealand regions under possible unification. We show that New Zealand regions reap moderate gains from perfect risk sharing when they form a union with Australia, whereas for Australian states, the gains are somewhat similar to what they have attained at the intranational level. Second, we measure the extent of interstate risk sharing and intertemporal smoothing between the two countries. We are able to observe a substantial degree of intertemporal smoothing among Australian states and New Zealand regions, either alone or jointly, thus confirming the permanent income hypothesis. Further, unique to the risk-sharing literature, we decompose the aggregate (nondiversifiable) output shocks into positive and negative components, in order to assess the strength of risk-sharing mechanisms across business cycles. The study finds a virtual absence of risk sharing when Australia and New Zealand face negative aggregate fluctuations, raising doubts about the feasibility of the union, particularly during economic downturns. (JEL F41, F36)

Date: 2016
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