Recent years have seen an increased focus on the implementation of Preferential Trade Agreements (PTAs). While the number of PTAs has risen remarkably since early 2000, data on the utilization of preferential tariffs under these agreements point out that some businesses have not gained access to all the benefits that PTAs can provide. When utilization rates are low, the impact of the agreement will likely differ from what was anticipated by ex-ante economic research. This paper conducts a dynamic Computable General Equilibrium (CGE) analysis of the expected impact of the EU–Japan Economic Partnership Agreement and compares a scenario that includes realistic preference utilization data with a standard scenario where all tariff liberalization is assumed to be fully utilized by businesses. The results show considerable differences between the two scenarios and illustrate the need to make the inclusion of credible utilization data standard practice in the modelling of international trade.

The gap in the life expectancy of the elderly across educational groups is high, and this will probably increase over the coming decades. In this article, we use a computable overlapping generations model economy to show that the long-term link between heterogeneity in longevity and education could translate into an implicit tax/subsidy on the expected lifetime benefits to lifetime payroll taxes ratio, with rates around 10%, and that such rates pervert redistributive objectives of pension systems. We then analyze some parametric changes aimed at restoring the progressiveness of these systems in the long run, and find that a higher minimum pension or changes in the pension benefit formula go a long way as tools to restore the system's long-term progressivity.

The UK faces a number of economic challenges in the short to medium term. Prior to COVID-19, renegotiation of trading arrangements with the European Union was the most prominent of these. We build on existing macroeconomic analysis by assessing prospects for the UK’s regions generated by combining a global macroeconometric model and a regional computable general equilibrium of the UK. A central macroeconomic scenario shows a national average annual GDP growth rate of 1.7 per cent to 2044. When the macroeconomic scenario is applied across regions, growth rates range from 1.6 per cent for Cambridge to 2.2 per cent for Pembrokeshire; the standard deviation is low at 0.07 per cent and the coefficient of variation is 0.04 per cent. In contrast, much wider variation is observed in the standard deviation for exports (0.36 per cent), investment (0.11 per cent) and consumption (0.14 per cent). The country results favour Scotland, which grows at an annual rate of 1.8 per cent, whereas Wales is the slowest growing of the countries at 1.7 per cent. Consistent with the macroeconomic analysis, international trade is the most important contributor to the regional variation in growth rates. We also analyse the effects of higher government consumption relative to the forecasts and find most regions are predicted to experience lower economic activity except the handful in which government consumption is a much higher share of GDP than average.

Explaining cross-country differences in current accounts is difficult. While pay-as-you-go pensions reduce the need to save for retirement, contributions to capital-funded pensions are saved for future consumption. An overlapping-generations analysis shows that capital-funded pensions increase net foreign assets holdings. With a multi-pillar system whose capital-funded part accounts for 18% of pensions, the Austrian current account balance would be 1 percentage point of gross domestic product (GDP) higher than with pure pay-as-you-go pensions in 20 years. By comparison, the Austrian current account surplus averages 1.8% of GDP. Empirically, I find that the current account of high-income countries increases with the coverage and replacement rates of capital-funded pensions.

This paper measures the economic impacts of Brazil's climate mitigation strategies contained in its Nationally Determined Contribution (NDC). To do so, we employ the computable general equilibrium MIT Economic Projection and Policy Analysis model and simulate alternative carbon pricing scenarios (sectoral versus economy-wide carbon markets), set to achieve the country's overall emissions targets announced under the Paris Agreement. The results show relatively cheap emissions reductions from land-use changes and agriculture in the short run: the cost of the Brazilian NDC is predicted to be only 0.7 per cent of GDP in 2030. Further efforts to reduce carbon emissions beyond 2030 would require policy changes, since all the potential emissions reductions from deforestation would be finished and the capacity to expand renewable energy sources would be constrained. In this case, an economy-wide carbon pricing system would help substantially to avoid higher compliance costs.

We study the fiscal and welfare consequences of three options for increasing pension generosity in Spain: (i) disability and minimum pensions are fully indexed with the Consumer Price Index (CPI); (ii) minimum and lower value pensions are fully indexed with the CPI; and (iii) returning to full price indexation of all Spanish pensions. While these reforms increase pension adequacy, the tax increases needed to finance the higher pension expenditure differ significantly. Moreover, most current cohorts prefer returning to the full price indexation of all Spanish pensions, but future cohorts prefer that only disability and minimum pensions be indexed with the CPI.

In this paper, we use a computable general equilibrium model to simulate the effects of drought and a decrease in agricultural productivity caused by climate change in Guatemala. A reduction in agricultural productivity would mean a considerable drop in crop and livestock production, and the resulting higher prices and lower household income would mean a significant reduction in the consumption of agricultural goods and food. The most negative effects of a drought would be concentrated in agriculture, given its intensive use of water. Because agricultural production is essential to ensuring food availability, these results suggest that Guatemala needs a proper water-distribution regulatory framework.

We use an overlapping generations model economy with endogenous retirement to study the 2011 and 2013 reforms of the Spanish public pension system. These reforms delay the legal retirement ages, increase the contributivity of the system, and adopt a sustainability factor and a pension revualuation index that effectively transform the Spanish pension system into a defined-contribution pension system. We find that these reforms improve the sustainability of Spanish pensions substantially, and that they limit the tax increases that would have been necessary to finance the pension system deficits. But these results are achieved at the expense of large reductions in the real value of the average pension. This reduction is progressive and, by 2050, the average pension is approximately 30% smaller in real terms than what it would have been under the pension system rules that prevailed in 2010. We also show that these reforms are costly in welfare terms and that households born between 1950 and 1970, young disabled workers who are alive at the time of the reform, and future cohorts bear the highest welfare costs. The substantial reduction of pensions and the high welfare costs that these reforms bring about lead us to conjecture that further reforms lurk in the future of Spanish pensions.

We study the short-, medium-, and long-run implications of stimulating annuity markets in a dynamic general-equilibrium overlapping-generations model. We find that beneficial partial-equilibrium effects of stimulating annuity markets are counteracted by negative general-equilibrium repercussions. Balancing the positive partial-equilibrium and negative general-equilibrium forces we show that there exists an intermediate level of annuitization such that the lifetime utility of steady-state agents is maximized. Studying the transition to this optimal degree of annuitization shows that currently middle-aged individuals stand to gain most from the stimulation of annuity markets. Complementing our main analysis, we highlight the centrality of the interplay between human-capital accumulation and annuity market policy.