Democratic public good provision

This paper analyzes an overlapping generation model of redistribution and public good provision under repeated voting. Expenditures are financed through age-dependent taxation that distorts human capital investment. Taxes redistribute income both across skill groups and across generations. We focus on politico-economic Markov equilibria and contrast these with the Ramsey allocation under commitment. The model features indeterminate equilibria, with a key role of forward-looking strategic voting. Due to the lack of commitment to future policies, the tax burden may be on the wrong side of the dynamic Laffer curve. Moreover, restrictions on government policies can in some cases be welfare improving.     

Misallocation and productivity effects of the Smoot–Hawley tariff

Using a newly created microeconomic archive of US imports at the tariff line level for 1930–1933, we construct industry-level tariff wedges incorporating the input–output structure of US economy and the heterogeneous role of imports across sectors of the economy. We use these wedges to show that the average tariff rate of 46% in 1933 substantially understated the true impact of the Smoot–Hawley (SH) tariff structure, which we estimate to be equivalent to a uniform tariff rate of 70%. We use these wedges to calculate the impact of the Smoot–Hawley tariffs on total factor productivity and welfare. In our benchmark parameterization, we find that tariff protection reduced TFP by 1.2% relative to free trade prior to the Smoot–Hawley legislation. TFP fell by an additional 0.5% between 1930 and 1933 due to Smoot–Hawley. We also conduct counterfactual policy exercises and examine the sensitivity of our results to changes in the elasticity of substitution and the import share. A doubling of the substitution elasticities yields a TFP decline of almost 5% relative to free trade, with an additional reduction due to SH of 0.4%.     

INTERTEMPORAL COMPLEMENTARITY AND OPTIMALITY: A STUDY OF A TWO‐DIMENSIONAL DYNAMICAL SYSTEM*

We study the underlying structure of the two‐dimensional dynamical system generated by a class of dynamic optimization models that allow for intertemporal complementarity between adjacent periods, but preserve the time‐additively separable framework of Ramsey models. Specifically, we identify conditions under which the results of the traditional Ramsey‐type theory are preserved even when the intertemporal independence assumption is relaxed. Local analysis of this theme has been presented by Samuelson (Western Economic Journal 9 (1971), 21–26). We establish global convergence results and relate them to the local analysis, by using the mathematical theory of two‐dimensional dynamical systems. We also relate the local stability property of the stationary optimal stock to the differentiability of the optimal policy function near the stationary optimal stock, by using the Stable Manifold Theorem.     

The dynamics of inequality and social security in general equilibrium

This paper analyzes the dynamic politico-economic equilibrium of a model where repeated voting on social security and the evolution of household characteristics in general equilibrium are mutually affected over time. In particular, we incorporate within-cohort heterogeneity in a two-period Overlapping-Generation model to capture the intra-generational redistributive effect of social security transfers. Political decision-making is represented by a probabilistic voting à la Lindbeck and Weibull (1987). We analytically characterize the Markov perfect equilibrium, in which social security tax rates are shown to be increasing in wealth inequality. A dynamic interaction between inequality and social security leads to larger social security programs. In a model calibrated to the U.S. economy, the dynamic interaction is shown to be quantitatively important: It accounts for more than half of the social security growth in the dynamics. We also perform some normative analysis, showing that the politico-economic equilibrium outcomes can be fundamentally different from the Ramsey allocation.     

技术扩散模型中的发展中国家最优专利保护

本文在Barro and Sala-I-Martin(1997)的技术扩散模型基础上,构建了一个Ramsey问题模型讨论发展中国家内生的动态最优专利保护问题。本文给出了Ramsey问题的均衡解并讨论了其动态特征,克服了现有文献只用比较静态方式分析讨论外生最优专利保护政策的缺陷。本文的主要结论是,发展中国家在发展早期阶段,理应设定相对较低的专利保护程度,然后随着经济成长不断地提高专利保护水平,但其长期的稳态专利保护水平有可能比发达国家高,也可能比发达国家低。     

Time-Consistent Public Policy

In this paper we study how a benevolent government that cannot commit to future policy should trade off the costs and benefits of public expenditure. We characterize and solve for Markov-perfect equilibria of the dynamic game between successive governments. The characterization consists of an inter-temporal first-order condition (a "generalized Euler equation") for the government, and we use it both to gain insight into the nature of the equilibrium and as a basis for computations. For a calibrated economy, we find that when the only tax base available to the government is capital income—an inelastic source of funds at any point in time—the government still refrains from taxing at confiscatory rates. We also find that when the only tax base is labour income the Markov equilibrium features less public expenditure and lower tax rates than the Ramsey equilibrium.     

反哺与分配:金融中介对经济增长的影响

企业家能力与物质资本的结合可以促进经济增长,而这两种要素禀赋可能由不同的个体持有,因此,只有在个体间合理分配这两个要素的报酬,经济才能增长。本文给出微观机制来表明企业家能力异质的一群个体如何形成金融中介联盟,并在个体层面引进无穷期动态拉姆齐模型,个体通过优化自身的选择而促进整个社会的经济增长。我们还给出了富人扶持穷人的价格涓流效应和反哺涓流效应,来描述金融中介对经济增长以及收入分配影响的途径。     

RAMSEY TAXES MEET PRICE RIGIDITY

‘Ramsey taxes’ are commodity taxes that minimize deadweight loss. Evidence has shown dramatic differences in the extent of price rigidity across goods: while the prices of some goods change frequently, the prices of other goods seldom change. This paper examines Ramsey taxes in the presence of heterogeneous price rigidity. We find that, to minimize deadweight loss, lower (higher) tax rates should be imposed on goods with rigid prices if their relative prices are too high (low) relative to the would‐be situation of no price stickiness. Intuitively, Ramsey taxes remedy the relative price distortion caused by the price rigidity of some goods. We calibrate our model to data from Taiwan and the USA, showing a significant cut in welfare cost if Ramsey rather than uniform taxes are applied.     

The last fifteen years of stagnation in Italy: a business cycle accounting perspective

In this paper, we investigate possible sources of declining economic growth in Italy beginning near the middle of the 1990s. A long-term data analysis suggests that the poor performance of the Italian economy cannot be blamed on an unfortunate business cycle contingency. Other countries of the euro area have shown better performance, and the macroeconomic data indicate that the Italian economy has not grown at the same rate as these other European economies. We investigate the sources of economic fluctuations in Italy by applying the business cycle accounting procedure introduced by Chari et al. (Econometrica 75(3):781–836, 2007). We analyze the relative importance of efficiency, labor, investment and government wedges for business cycles in Italy during the 1982–2008 period. We find that individual wedges have played different roles during this period; however, the efficiency wedge is shown to be the factor most responsible for the stagnation phase that began in approximately 1995. Our findings also show that the decline in labor market distortions that occurred in Italy during the 1990s alleviated the stagnation effect somewhat and prevented an even more abrupt slowdown in per capita output growth.     

Evaluating the long-run impacts of the 9/11 terrorist attacks on US domestic airline travel

As a result of the Public Utilitie Regulatory Policies Act of 1978 (PURPA), state public utility commissions have begun to implement cost-based rate-setting procedures in order to rationalize energy choices made by utilities and utility customers. This rationalization had been necessary in view of the increased competition characterizing the eletric utility industry. Taking these regulatory and competitive change as a point of departure we develop and implement an electricity rate-setting model which is cost based, which explicitly accounts for static and dynamic competitive pressures, and which is welfare maximizing. The model extends standard Ramsey methods to include bothshort-run andlong-run price responses in the inverse elasticity rule. We use the estimated model to evalute and design alternative rates. Our analysis takes a distincly strategic approach, explicitly addressing competition from other fuels and the possibility of competitive bypass.     

网络产业Ramsey接入定价方法研究

网络产业放松规制、引入竞争的改革使得上游"瓶颈"环节和下游竞争性环节出现了"业务分离",催生了接入问题,并成为网络产业规制改革能否成功和有效竞争的关键.通过对用于指导网络产业单向接入定价的Ramsey接入定价方法的研究,得出结论:短期内,将接入服务和最终产品无差别对待的做法可能遭受到较大的实阻碍,从而整体最高价格上限规制的实施显得不太可能.因此,比较现实的做法是,在接入服务市场上,允许在位企业实施两部制(或多部制)接入定价方法.     

How should the use of nonrenewables be taxed under a public budget constraint?

Most developed countries will be facing severe public budget constraints. We examine how extraction or use of nonrenewable resources should be taxed when governments need to collect commodity tax revenues. Moreover, we show how our results can be directly used to indicate how carbon taxation of nonrenewable energy sources should be increased in the presence of public-revenue needs. The obtained tax formula is an augmented, dynamic version of the standard Ramsey taxation rule. It distorts developed reserves, which are reduced, and their depletion, which is slowed down, going further in the direction prescribed for the resolution of the climate externality. We present a simple calibrated application of our results to illustrate how carbon taxation of oil should be strongly augmented, and the incidence of this adjustment on oil use and tax revenues.     

On the design of optimal grandfathering schemes for emission allowances

This paper derives optimal schemes for the free allocation of emission allowances in a dynamic context. We consider emissions- and output-based allocation rules which allow for updating of the basis of allocation over time and thereby do not rely on historical data only. We show that such dynamic schemes do not necessarily induce inefficient outcomes. In closed trading systems with an absolute cap on emissions, grandfathering schemes which allocate allowances proportionally to past emissions are first-best. However, in open trading systems where allowances can be traded with outsiders, first-best allocation schemes must not depend on firm-specific decisions while second-best schemes correspond to a Ramsey rule of optimal tax differentiation and are generally based on both past emission and output levels.     

On Ramsey equilibrium: capital ownership pattern and inefficiency

We provide a sufficient condition on the production function under which eventually the most patient household owns the entire capital stock in every Ramsey equilibrium, called the turnpike property. This generalizes the result in the literature which establishes the turnpike property using the capital income monotonicity condition. We then provide an example of a Ramsey equilibrium in which the most patient household reaches a no capital position infinitely often. This is a strong refutation of the turnpike property on Ramsey equilibria. We also show that the constructed Ramsey equilibrium is inefficient in terms of the aggregate consumption stream that it provides.     

Economic growth,corruption and tax evasion

In this paper, we explore tax revenues in a regime of widespread corruption in a growth model. We develop a Ramsey model of economic growth with a rival but non-excludable public good which is financed by taxes which can be evaded via corrupt tax inspectors. We prove that the relationship between the tax rate and tax collection, in a dynamic framework, is not unique, but is different depending on the relevance of the “shame effect”. We show that in all three cases — “low, middle and high shame” countries, the growth rate increases as the tax rate increases up to a threshold value, after which the growth rate begins to decrease as the tax rate increases. But, for intermediate tax rates, the rate of growth for “low shame” countries is lower than that of “uniform shame” countries which is, in turn, lower than that of “high shame” countries. This happens because the growth rate is more sensitive to variations of t in an honest country rather than in a corrupt country.     

Optimal fiscal and monetary policy with sticky wages and sticky prices

We determine the optimal degree of price inflation volatility when nominal wages are sticky and the government uses state-contingent inflation to finance government spending. We address this question in a well-understood Ramsey model of fiscal and monetary policy, in which the benevolent planner has access to labor income taxes, nominally risk-free debt, and money creation. Our main result is that sticky wages alone make price stability optimal in the face of shocks to the government budget, to a degree quantitatively similar as sticky prices alone. Key for our results is an equilibrium restriction between nominal price inflation and nominal wage inflation that holds trivially in a Ramsey model featuring only sticky prices. Our results thus show that when nominal wages are sticky, setting real wages as close as possible to their efficient path is a more important goal of optimal monetary policy than is financing innovations in the government budget via state-contingent inflation. A second important result is that the nominal interest rate can be used to indirectly tax the rents of monopolistic labor suppliers. Taken together, our results uncover features of Ramsey fiscal and monetary policy in the presence of a type of labor market imperfection that is widely-believed to be important.     

Business cycles in EU new member states: How and why are they different?

This paper uses the business cycle accounting framework to investigate the differences between economic fluctuations in Central and Eastern European (CEE) countries and the euro area. We decompose output movements into the contributions of four economic wedges, affecting the production technology, the agents’ intra- and intertemporal choices, and the aggregate resource constraint. We next analyze the observed cross-country differences in business cycles with respect to these four identified wedges. Our results indicate that business cycles in the CEE countries do differ from those observed in the euro area, even though substantial convergence has been achieved after the eastern EU enlargement. The major differences concern the importance of the intra- and intertemporal wedges, which account for a larger proportion of output fluctuations in the CEE region and also exhibit relatively little comovement with their euro area counterparts.     

Corporate taxation and the efficiency gains of the 1986 Tax Reform Act

Summary The 1986 Tax Reform Act (TRA) had little effect on the overall U. S. effective capital income tax rate. However, TRA significantly reduced differences in effective taxation of corporate and noncorporate capital for a number of U. S. industries. The Mutual Production Model developed in Gravelle and Kotlikoff (1989) can be used to study the efficiency gains from the reduction in corporate tax wedges within industries. Unlike the Harberger Model, the Mutual Production Model permits both corporate and noncorporate firms to produce the same goods and, therefore, to coexist within a given industry.This paper develops an 11-industry-55-year dynamic life cycle version of the Mutual Production Model. We use this model to study the steady-state efficiency gains associated with the new law. While we do not simulate the economy's transition path, our steady-state welfare changes are those that arise from compensating transitional generations for the first-order redistribution of income associated with the Tax Reform.We find that the 1986 Tax Reform law reduces excess burden by 85 percent of our model's economy's present value of consumption. This efficiency gain reflects the Tax Reform's reduction in corporate-noncorporate tax wedges, particularly in those industries with significant noncorporate production. Measured as a flow the 1988 estimated efficiency gain from the Tax Reform Act is $31 billion.The opinions expressed in this paper are those of the authors and do not necessarily reflect the views of The Congressional Research Service of the Library of Congress, Boston University, or The National Bureau of Economic Research. We are particularly grateful to Alan Auerbach, Oldrich Kyn, and an anonymous referee for very extensive and critical comments. We also thank Don Fullerton, Yolanda Henderson, Tom Woodward, and a referee for their very helpful suggestions.     

Monetary business cycle accounting

This paper investigates the quantitative importance of various types of distortions for inflation and nominal interest rate dynamics by extending business cycle accounting to monetary models. Representing various classes of real and nominal distortions as ‘wedges’ in standard equilibrium conditions allows a quantitative assessment of those distortions. Decomposing the data into movements due to these wedges shows that distortions generating movements in TFP and wedges in equilibrium conditions for asset markets are essential. In contrast, wedges capturing the effects of sticky prices play less important role. These results are robust to alternative implementations of the accounting method.