This paper analyzes the main conceptual issues that arise in assessing external sustainability with a view toward developing operational criteria for the purposes of multilateral surveillance. The main contribution of the analysis is to show how conditional forecasts of external imbalance may be...

The introduction of a new currency has often occurred as part of a program to fight hyperinflation. In this context, non-uniform conversion rates for different types of assets and liabilities have been used as a means of reducing an initial “excess” stock of liquidity. The paper examines the...

The observation that collection lags combine with inflation to erode fiscal revenues has long been a strong argument against seigniorage (Tanzi (1978)). However, with the exception of Dixit (1991), who used a general equilibrium model to reject this argument, the optimal tax literature has not...

The paper proposes a new welfare-based measure to evaluate the distributive effects of public programs. The proposed measure differs from traditional approaches in two important ways: first, it is based on life-cycle considerations, since most public expenditure programs have an intertemporal...

In designing policy measures, including possible social safety nets, targeted to the poor, it is important to fully understand the efficiency implications of these measures. There is abundant macroeconomic literature on their negative effects on the poor’s work effort. The literature, however,...

We survey the literature on the two main views of exchange rate determination that have evolved since the early 1970s: the monetary approach to the exchange rate (in flex-price, sticky-price and real interest differential formulations) and the portfolio balance approach. We then go on to discuss...

This paper develops a structural macroeconometric model of the world economy, disaggregated into thirty five national economies. This panel unobserved components model features a monetary transmission mechanism, a fiscal transmission mechanism, and extensive macrofinancial linkages, both within...

A model of optimum currency areas is presented using a general equilibrium model with regionally differentiated goods. The choice of a currency union depends upon the size of the underlying disturbances, the correlation between these disturbances, the costs of transactions across currencies,...

A bilateral search model of the commodity market is formulated to study the effects of liberalizing prices in a reforming socialist economy. The main result is that if the competitive structure of the economy is not quickly modified to eliminate supply rents, price liberalization may be...

Counterpart funds generated through foreign currency or commodity aid have again become an issue of interest, in view of the substantial buildup of these funds. Contrary to the usual approach a model is developed in this paper, which takes account of the budgetary impact, supply-side and money...