The Marginal Cost of Base-Load Power: An Application to Alcoa's Portland Smelter

The aim of this paper is to develop and exposit the methodology underlying the computation of the long-run marginal costs of 'base-load' electricity supply by a publicly owned utility. The particular application is to the costing of power to be supplied by the State Electricity Commission of Victoria (SECV) to Alcoa's aluminum smelter at Portland in Victoria. The results suggest a sizeable subsidy element in the tariff which is sensitive to the selection of the real discount rate appropriate for the public provision of electricity.     

Modelling the Determinants of Trans-Tasman Migration after World War II*

This paper identifies the economic and demographic factors responsible for migration flows between Australia and New Zealand by means of a probabilistic model of emigration in both directions. The largely uncontrolled flows between the two countries have the same determinants as those commonly found in studies of internal migration. The cost of migration (proxied by the real cost of air travel), labour market conditions and the potential earnings differential play a role, although the results are modified by the incidence of return migration and age composition.     

Social Welfare Functionals on Restricted Domains and in Economic Environments

Arrow's “impossibility” and similar classical theorems are usually proved for an unrestricted domain of preference profiles. Recent work extends Arrow's theorem to various restricted but “saturating” domains of privately oriented, continuous, (strictly) convex, and (strictly) monotone “economic preferences” for private and/or public goods. For strongly saturating domains of more general utility profiles, this paper provides similar extensions of Wilson's theorem and of the strong and weak “welfarism” results due to d'Aspremont and Gevers and to Roberts. Hence, for social welfare functionals with or without interpersonal comparisons of utility, most previous classification results in social choice theory apply equally to strongly saturating economic domains.     

Regulatory Capital,Tax, and Earnings Management Effects on Loan Loss Accruals in the Canadian Banking Industry*

Abstract. This paper examines the degree to which managerial discretion over accruals relating to loan losses in the Canadian banking industry during 1977–87 may have been utilized to manage regulatory capital, taxable income, and reported earnings. These years reflect a unique period in which accounting and regulatory practices differed significantly from the post-1987 period. These prior practices created different types of incentives and highlighted different policy issues such as the role of tax benefits in loan loss accrual decisions. We model a three-equation, simultaneous system around three annual discretionary choices: the amount of loan loss experience accrued (based on specific provisions), the size of reserve transfers to the Appropriation for Contingencies (based on general provisions), and the extent of external regulatory capital raised. Results indicate strong support for the capital maintenance predictions and weaker, but significant, support for the tax management predictions. Results do not support the predictions of the earnings management hypothesis. Résumé. Les auteurs examinent la mesure dans laquelle la discrétion dont jouissait la direction dans la présentation des montants cumulatifs des pertes sur prêts, dans le secteur bancaire canadien entre 1977 et 1987, pourrait avoir été mise à profit dans la gestion du capital réglementaire, du revenu imposable et des bénéfices publiés. Cette décennie est unique puisqu'elle se caractérise par le fait que les méthodes comptables et réglementaires présentaient des différences significatives par rapport à celles de la période postérieure à 1987. Les méthodes initiales ont donné naissance à différents types d'incitatifs et mis en relief des questions différentes relatives aux politiques, telles que le rôle des avantages fiscaux dans les décisions touchant les pertes sur prêts cumulatives. Les auteurs créent un modèle à partir d'un système de trois équations concomitantes, autour de trois choix annuels discrétionnaires: le montant cumulatif des pertes sur prêts qui sont subies (basé sur des dispositions précises), l'importance des transferts de réserves aux provisions pour éventualités (basée sur des dispositions générales), et l'importance du capital réglementaire externe recueilli. Les résultats confirment éloquemment les prédictions relatives au maintien du capital et de façon plus tempérée, mais néanmoins significative, les prédictions relatives à la gestion fiscale. Ils ne confirment cependant pas les prédictions relatives à la gestion des bénéfices.     

Explaining House Prices in Australia: 1970–2003*

This paper aims to explain changes in real house prices in Australia from 1970 to 2003. We develop and estimate a long-run equilibrium model that shows the real long-run economic determinants of house prices and a short-run asymmetric error correction model to represent house price changes in the short run. We find that, in the long run, real house prices are determined significantly and positively by real disposable income and the consumer price index. They are also determined significantly and negatively by the unemployment rate, real mortgage rates, equity prices and the housing stock. Employing our short-run asymmetric error correction model, we find that there are significant lags in adjustment to equilibrium. When real house prices are rising at more than 2 per cent per annum, the housing market adjusts to equilibrium in approximately four quarters. When real house prices are static or falling, the adjustment process takes six quarters.     

On Arbitrage-Free Pricing of Interest Rate Contingent Claims

Unlike most interest rate claim models, the Ho-Lee model utilizes full information on the current term structure. Unfortunately, the model has a major deficiency in that negative interest rates can occur. This article modifies the model such that interest rates are well behaved.