Working Papers
2019
March 19, 2019
The External Balance Assessment Methodology: 2018 Update
Description: The assessment of external positions and exchange rates is a key mandate of the IMF. This paper presents the updated External Balance Assessment (EBA) framework—a key input in the conduct of multilaterally-consistent external sector assessments of 49 advanced and emerging market economies—following the two rounds of refinements adopted since the framework was introduced in 2012 (as described in Phillips et al., 2013). It also presents new complementary tools for shedding light on the role of structural factors in explaining external imbalances and assessing potential biases in the measurement of external positions. Remaining challenges and areas of future work are also discussed.
March 18, 2019
Some Policy Lessons from Country Applications of the DIG and DIGNAR Models
Description: Over the past seven years, the DIG and DIGNAR models have complemented the IMF and World Bank debt sustainability framework (DSF) analysis, over 65 country applications. They have provided useful insights in the context of program and surveillance work, based on qualitative and quantitative analysis of the macroeconomic effects of public investment scaling-ups. This paper takes stock of the model applications and extensions, and extract five common policy lessons from the universe of country cases. First, improving public investment efficiency and/or raising the rate of return of public projects raises growth and lowers the risks associated with debt sustainability. Second, prudent and gradual investment scaling-ups are preferable to aggressive front-loaded ones, in terms of private sector crowding-out effects, absorptive capacity constraints, and debt sustainability risks. Third, domestic revenue mobilization helps create fiscal space for investment scaling-ups, by effectively containing public debt surges and their later-on repayments. Fourth, aid smoothens fiscal adjustments associated with public investment increases and may lower the risks of unsustainable debt. Fifth, external savings mitigate Dutch disease macroeconomic effects and serve as fiscal buffers. The paper also discusses how these models were used to estimate the quantitative macro economic effects associated with these lessons.
March 18, 2019
The Impact of Rapid Aging and Pension Reform on Savings and the Labor Supply
Description: We study, both empirically and quantitatively, the role of savings and the labor supply in self-insurance channels over the life cycle when one faces not only idiosyncratic income risks, but also changes in longevity risk and pension benefits. We pick China as a case study since China has undergone a dramatic process of rapid aging and a tremendous reduction in social security benefits for the period 1995-2009. We find that both savings and the labor supply are quantitatively important self-insurance channels in responding to changes in longevity risk and pension benefits, and the responses via adjustment to savings and labor supply have significant macroeconomic implications. Applying the model to China, we find that the pension reform and rapid aging together contribute 55 percent of the increase in the household saving rate from 1995 to 2009, and they jointly capture about 64 percent of the drastic increase in the labor supply for the same period.
March 18, 2019
Attaining Selected Sustainable Development Goals in Guatemala: Spending, Provision, and Financing Needs
Description: Raising living standards continues to be the main challenge facing Guatemala, as a matter of economic success and social cohesion. This paper discusses the spending, financing, and delivery capacity aspects of a viable development strategy for Guatemala couched within the United Nations Sustainable Development Goals (SDGs) agenda. Overall, Guatemala faces additional spending of about 8½ percent of GDP in 2030 to attain health, education, and roads, water, and sanitation infrastructure SDGs. While substantial, these cost estimates are commensurate with a well-defined financing strategy encompassing continuing tax administration efforts, broad-based tax reform, scaled-up private sector participation, and greater spending efficiency. Improving delivery capacities is also essential to secure access of those public goods to all Guatemalans, irrespective of their place of residence, ethnic group, or ability to pay.
March 18, 2019
Assessing House Prices with Prudential and Valuation Measures
Description: In this paper we provide tools for assessing the house prices and housing valuation. We develop two approaches: (i) borrowing capacity approach, and (ii) intrinsic value approach. The borrowing capacity of households, together with their down payment, implies how much housing they can attain. In the intrinsic value approach, property value is viewed as a discounted present value of adjusted net rental income. Our approach does not involve a complex econometric model and only widely available data are used. The proposed indicators can guide households, financial markets and macroprudential authorities in their understanding of house prices development. To illustrate the concepts, we analyze the housing prices in the Czech Republic and assess the degree of market over-and undervaluation.
March 18, 2019
Liquidity Management under Fixed Exchange Rate with Open Capital Account
Description: This paper introduces a theoretical framework for liquidity management under fixed exchange rate arrangement, derived from the price-specie flow mechanism of David Hume. The framework highlights that the risk of short-term money market rates un-anchoring from the uncovered interest rate parity due to money and foreign exchange market frictions could jeopardize financial stability and market development. The paper then discusses operational solutions that stabilize money market rates close to the level implied by the Uncovered Interest Rate Parity (UIP). Liquidity management under fixed exchange rate with an open capital account presents specific challenges due to: (1) the larger liquidity shocks induced by foreign reserve swings that challenge the development of money markets; and (2) more complicated liquidity forecasts. The theoretical framework is empirically tested based on the estimate of “offset” coefficients for Denmark and Hong Kong SAR.
March 18, 2019
Two-Sided Market, R&D and Payments System Evolution
Description: It takes many years for more efficient electronic payments to be widely used, and the fees that merchants (consumers) pay for using those services are increasing (decreasing) over time. We address these puzzles by studying payments system evolution with a dynamic model in a twosided market setting. We calibrate the model to the U.S. payment card data, and conduct welfare and policy analysis. Our analysis shows that the market power of electronic payment networks plays important roles in explaining the slow adoption and asymmetric price changes, and the welfare impact of regulations may vary significantly through the endogenous R&D channel.
March 18, 2019
Unemployment Surges in the EU: The Role of Risk Premium Shocks
Description: In the last decade, over half of the EU countries in the euro area or with currencies pegged to the euro were hit by large risk premium shocks. Previous papers have focused on the impact of these shocks on demand. This paper, by contrast, focuses on the impact on supply. We show that risk premium shocks reduce the output level that maximizes profit. They also lead to unemployment surges, as firms are forced to cut costs when financing becomes expensive or is no longer available. As a result, all countries with risk premium shocks saw unemployment surge, even as euro area core countries managed to contain unemployment as firms hoarded labor during the downturn. Most striking, wage bills in euro area crisis countries and the Baltics declined even faster than GDP, whereas in core euro area countries wage shares actually increased.
March 8, 2019
Determinants of Currency Composition of Reserves: a Portfolio Theory Approach with an Application to RMB
Description: The way central banks manage their foreign reserve assets has evolved over the past decades. One major trend is managing reserves in two or more tranches—liquidity tranche and investment tranche—especially for those with adequate reserves. Incorporating reserve tranching, we have developed in this paper a central bank’s reserve portfolio choice model to analyze the determinants of the currency composition of reserves. In particular, we adopt the classical mean-variance framework for the investment tranche and the asset-liability framework for the liquidity tranche. Building on these frameworks, the roles of currency compositions in imports invoicing and short-term external debt, and risk and returns of reserve currencies can be quantified by our structural model—a key contribution of our paper given the absence of structural models in the literature. Finally, we estimate the potential paths of the share of RMB in reserves under different scenarios to shed light on its status as an international currency.
March 8, 2019
Fiscal Redistribution and Social Welfare
Description: Fiscal policy is a key tool for achieving distributional objectives in advanced economies. This paper embeds the discussion of fiscal redistribution within the standard social welfare framework, which lends itself to a transparent and practical evaluation of the extent and determinants of fiscal redistribution. Differences in fiscal redistribution are decomposed into differences in the magnitude of transfers (fiscal effort) and in the progressivity of transfers (fiscal progressivity). Fiscal progressivity is further decomposed into differences in the distribution of transfers across income groups (targeting performance) and in the social welfare returns to targeting due to varying initial levels of income inequality (targeting returns). This decomposition provides a clear distinction between the concepts of progressivity and targeting, and clarifies the relationship between them. For illustrative purposes, the framework is applied to data for 28 EU countries to determine the factors explaining differences in their fiscal redistribution and to discuss patterns in fiscal redistribution highlighted in the literature.