Fiscal externalities and the design of intergovernmental grants

This paper describes the tax and expenditure externalities that can occur in a federation, focusing on the (relatively neglected) vertical tax and expenditure externalities which arise when state governments' tax and expenditure decisions affect the federal government's budget constraint and vice versa. Formulas are derived for matching grants which correct the distortions in governments' decision-making caused by fiscal externalities. With vertical tax externalities, the matching revenue grant may result in transfers from the state government to the federal government. With vertical expenditure externalities, the federal government should provide a matching expenditure grant equal to the additional federal revenue that is generated from an additional dollar spent by a state on productivityenhancing activities such as education.     

Tax Setting in a Federal System: The Case of Personal Income Taxation in Canada

In a decentralised tax system, the effects of tax policies enacted by one government are not confined to its own jurisdiction. First, if both the regional and the federal levels of government co-occupy the same fields of taxation, tax rate increases by one layer of government will reduce taxes collected by the other. Second, if the tax base is mobile, tax rate increases by one regional government will raise the amount of taxes collected by other regional governments. These sources of fiscal interdependence are called in the literature vertical and horizontal tax externalities, respectively. Third, as Smart (1998) shows, if equalisation transfers are present, an increase in the standard equalisation tax rate provides incentives to raise taxes to the receiving provinces. A way to check the empirical relevance of these hypotheses is to test for the existence of interactions between the regional tax rate, on the one hand, and the federal tax rate, the tax rate set by competing regions, and the standard equalisation tax rate, on the other hand. Following this approach, this paper estimates provincial tax setting functions with data on Canadian personal income taxation for the period 1982–1996. We find a significant positive response of provincial tax rates to changes in the federal income tax rate, the tax rates of competing provinces, and the standard equalisation rate (only for receiving provinces). We also find that the reaction to horizontal competition is stronger in the provinces that do not receive equalisation transfers.     

Federal tax competition and the efficiency consequences for local taxation of revenue equalization

Recent work has shown that a system of equalization grants can neutralize the efficiency loss caused by tax competition among lower-level governments. These models, however, ignore the vertical tax externalities that occur when the federal and lower-level governments levy taxes on the same base. This paper incorporates equalization grants into a standard capital tax competition model in which there are horizontal tax externalities between jurisdictions and vertical tax externalities between the levels of government. It is shown that, even in the presence of vertical tax externalities, an efficient level of lower-level government taxation can be achieved with a modifying version of a standard equalization grant formula.     

Tax competition and tax base equalization in the presence of multiple tax instruments

The literature on tax competition has argued that tax base equalization, which reduces regional disparities in tax bases, can serve as a means of internalizing horizontal and vertical fiscal externalities. This argument assumes that each government relies on a single tax base (a regional tax on mobile capital and a federal tax on savings). This paper considers the case in which a distortionary labor tax is also available. Internalizing fiscal externalities requires that while the regional capital tax base is fully equalized, a region’s equalization entitlement for the labor tax is positive when its tax base is “larger” than the average tax base of all regions. This efficient tax base equalization system is incompatible with the primary objective of fiscal equalization.

     

Optimal taxation and welfare benefits with monitoring of job search

In order to investigate the interaction between tax policy, welfare benefits, the government technology for monitoring and sanctioning inadequate search, workfare, and externalities from work, we incorporate endogenous job search and involuntary unemployment into a model of optimal nonlinear income taxation. In this setting, the government faces a trade-off between boosting employment of low-skilled agents and raising work effort of high-skilled workers. If sanctions for inadequate search effort can be targeted at high productivity types for whom it is socially optimal to search, the government can afford to levy higher labor taxes on marginal workers without discouraging these agents from seeking work. This allows for lower marginal taxes on work effort of agents with a job. In contrast to workfare, job externalities in the private sector raise marginal tax rates, as the government attaches more importance to boosting employment of low-skilled workers.     

Education policies and optimal taxation

This paper studies the design of education policies in a setting in which optimal redistributive labor taxation is available. It is usually argued that the crucial parameter to guide education policy is the complementarity of education and ability. This is true only when labor supply is fixed or when income taxes are not allowed. I show that, if labor supply is endogenous and if the government can tax income in a nonlinear way, the crucial parameter is how the education elasticity of wage changes with ability. Taking the elasticity criterion into account, education subsidies are optimal in cases in which, under the complementarity criterion, education taxes would be optimal. To do this, I use an asymmetric information setting that motivates nonlinear taxation of income and education. JEL Classification H21 · H23 · H52 · I28     

Interjurisdictional Tax Competition in a Federal System of Overlapping Revenue Maximizing Governments

Academic literature in public finance has focused on interjurisdictional tax competition—namely among similar types of local governments—but has leaved vertical externalities arising from interactions between two overlapping governments sharing the same tax base aside. The purpose of this paper is to provide a simple model within which interjurisdictional tax competition and vertical interactions between two overlapping governments that share the same tax base can be analyzed simultaneously. We find that interjurisdictional tax competition reduces the global tax rate set by both overlapping governments (federal and local) but is unable to solve completely the distortion arising from vertical externalities. The model is also extended to allow for government subsidies to industrial capital. We give sufficient conditions for capital subsidies to be more efficient to attract capital when they are granted at a federal level rather than at a local level.     

Fiscal federalism and local public finance: A computable general equilibrium (CGE) framework

This paper attempts to make an argument for the feasibility and usefulness of a computable general equilibrium approach to studying fiscal federalism and local public finance. It begins by presenting a general model of fiscal federalism that has at its base a local public goods model with (1) multiple types of mobile agents who are endowed with preferences, private good endowments, and land endowments, (2) local governments that produce local public goods funded by a property tax, and (3) a land market that capitalizes local policies to equilibrate supply and demand. To this, a state (or national) government producing a state public good is added, and all levels of government abide by majority rule voting. A computable general equilibrium framework is derived from this theoretical model and calibrated to New Jersey micro tax data. It has been applied elsewhere to study the dominance of property in local tax bases as well as the general equilibrium effects of state or national intergovernmental programs such as redistributive grants in aid, district power equalization, and the deductibility of local taxes. Results in these areas are summarized and potential future applications discussed.     

Fiscal equalisation schemes under competition

This paper considers optimal fiscal equalisation in a federation that competes with other federations for business tax base. It formalises the argument that, under certain circumstances, federations have an incentive to foster tax competition among their subunits in order to attract tax base from other federations. We show that optimal fiscal equalisation serves the purpose of redistributing income from rich to poor subunits and of choosing an optimal level of tax competition. The latter is chosen as a trade-off between three goals. First, decentralised tax rate setting has positive fiscal externalities within the federation and, thus, tax rates are inefficiently low. Second, in the presence of hold-up problems in investment, tax rates may be inefficiently high. Then, tax competition serves as a commitment device for low future tax rates and is, thus, welfare enhancing. Third, generous fiscal equalisation within the federation is a commitment to not aggressively compete with subunits outside the federation for tax base; as a consequence, with optimal equalisation, equilibrium tax rates are higher within and outside the federation—and even higher than in the case of centralised (i.e. federal level) tax rate setting.     

Games within borders: are geographically differentiated taxes optimal?

The discontinuous tax treatment of sales at borders creates incentives for individuals to cross-border shop. This paper addresses whether it is optimal for a state composed of multiple regions to levy differentiated commodity tax rates across the regions. In a model where states maximize social welfare, a state’s optimal commodity tax system is almost always geographically differentiated. The optimal pattern of geographic differentiation critically depends on fundamental parameters as well as whether the state has a preference for high or low taxes. Under the assumption that utility is linear in consumption and that the elasticity of cross-border shopping is less than unity in absolute value, high-tax states will find it optimal to set a tax rate that is lower in the border region than in the periphery region and low-tax states will find it optimal to set a tax rate that is higher in the border region than in the periphery region. Optimizing high-tax states will set a higher tax rate in the border region if the social welfare measure is sufficiently redistributive. With welfare maximization, it is possible for taxes to be higher in the region near the state border—an outcome that cannot arise when the government cares only about total tax revenue.     

Ownership Concentration,State Ownership,and Effective Tax Rates: Evidence from China’s Listed Firms*

This paper examines the effect of ownership concentration and state ownership on the tax reporting practices of China’s publicly listed firms. I argue that ownership concentration and state ownership are important for tax reporting practices in China because listed firms have high ownership concentrations and high levels of state ownership. Using a sample of 758 listed Chinese firms over the 1998–2008 time period, I find that firms with concentrated share ownership have lower effective tax rates. I also find that firms whose largest shareholders are government‐related have higher effective tax rates compared to firms whose largest shareholders are nongovernment related. In other words, the nature of the largest shareholder (government vs. nongovernment) matters. I also show that ownership‐concentrated firms are able to achieve preferential statutory tax rates compared to firms with low ownership concentration regardless of the identity of the largest shareholder.     

Robust policymaking in the face of sudden stops

This paper considers tax policies to deal with Sudden Stops – declines in aggregate activity that are magnified by a binding collateral constraint – that occasionally occur in emerging market economies. Households and/or the government are assumed to face model uncertainty and desire robustness against alternative models. Welfare gains from optimal taxation are small if the government trusts its model of household expectations, whether those expectations are altered by model uncertainty or not; in contrast, welfare losses are large if the government is uncertain about the household's probability model.     

Sickness absence and health care in an economic federation

This paper addresses vertical fiscal externalities in a model where the state governments provide health care and the federal government provides a sickness benefit. Both levels of government tax labor income and policy decisions affect labor income as well as participation in the labor market. The results show that the vertical externality affecting the state governments’ policy decisions can be either positive or negative depending on, among other things, the wage elasticity of labor supply and the marginal product of expenditure on health care. Moreover, it is proved that the vertical fiscal externality will not vanish by assigning all powers of taxation to the states.      

Optimal income transfers

A substantial literature addresses the design of transfer programs and policies, including the negative income tax, other means-tested transfers, the earned income tax credit, categorical assistance, and work inducements. This work is largely independent of that on the optimal nonlinear income tax, yet formulations of such a tax necessarily address how low-income individuals should be treated. This paper draws on the optimal income taxation literature to illuminate the analysis of transfer programs, including the level and shape of marginal tax rates (including phase-outs), the structure of categorical assistance, and the role of work inducements in an optimal income transfer scheme. JEL Classification H21 · H53 · I38     

Tax enforcement and tax havens under formula apportionment

In this paper, we consider optimal tax enforcement policy in the presence of profit shifting toward tax havens. We show that, under separate accounting, tax enforcement levels may be too high due to negative fiscal externalities. In contrast, under formula apportionment, tax enforcement is likely to be too low due to positive externalities of tax enforcement. Our results challenge recent contributions arguing that, under formula apportionment, there is a tendency toward inefficiently high levels of (effective) tax rates.     

我国最优宏观税负水平的实证分析及政策选择

以巴罗、斯库利模型为分析框架,通过相关分析和多元回归分析,进一步研究我国的宏观税负问题。实证研究结果表明：政府通过征税把资源从私人部门转移到公共部门使用的过程中,政府征税对经济产生的负面影响并没有被政府有效地使用税收对经济产生的正效应所抵消,而政府支出本身也对经济产生了负面的影响。从这个角度判断,我国宏观税负水平不是最优的。我国应该进一步完善相关的政策,调整财政体制,进行相应的税收改革。     

Fiscal equalization and lobbying

Inter-regional redistribution through tax-base equalization transfers is examined in a setting in which taxpayers, organized as lobby groups, influence policy making. With lobbying only at the local level on tax rates, social welfare maximization implies, ceteris paribus, high (low) equalization rates on the tax bases backed by the strong (weak) lobby groups. With lobbying also at the central level, equalization is distorted downward on all tax bases if the pressure groups are similar in terms of lobbying power. It is instead distorted downward (upward) on the bases backed by strong (weak) groups if they are highly heterogeneous. In the latter situation, a uniform equalization structure may perform better than a differentiated one.     

The effects of agglomeration on tax competition: evidence from a two-regime spatial panel model on French data

This article studies how agglomeration economies affect tax competition between local jurisdictions. We develop a theoretical model with two main testable predictions: in a setting where agglomeration forces lessen the responsiveness of capital to tax, high-regime agglomeration jurisdictions should adopt a rent-taxing behavior, and they should react less to their neighbors’ tax policies. The panel dataset spans the period from 1995 to 2007 and focuses on the local business taxes set at the French mid-subnational jurisdiction level of départements. First, instrumental variables estimates indicate that attractive jurisdictions capture a significant part of firms’ agglomeration rent by levying higher tax rates. An increase by 1% of the localization economies indicator (a specialization index) leads to increasing the business tax rate by 0.43%. Second, local tax setting behaviors are characterized by a mimetic behavior, with best response functions that slope upwards. We propose a two-agglomeration-regime spatial lag model to estimate through ML the relationship between tax competition and attractiveness. Our main result shows that both are linked and tax mimicry is less pronounced if a jurisdiction is agglomerated. Specifically, in response to a decrease in the tax rate of neighboring local governments by 1%, local governments with strong agglomeration economies reduce their tax rate by 0.4% against 0.6% for local government characterized by a low-agglomeration regime. We show that the classical one-size-fits-all-case of a single regime of agglomeration suffers from a 40% downward bias for low-agglomeration jurisdictions. We draw the link to policy praxis by discussing the optimal design of equalization schemes.     

The effect of leverage on the tax-cut versus investment-subsidy argument

Two common methods of attracting corporate investment are investment incentives and tax incentives. It is important to use the two incentives in the correct proportions, otherwise the government will give up too much value in the process of attracting investment. This paper examines the effect of tax cut and investment subsidy on the government's net benefit from a project. Earlier studies concluded that it was optimal to use only investment subsidy and no tax cuts. We show that this is not true when debt financing is possible, and it is generally optimal (from the government's perspective) to use a combination of tax reduction and investment subsidy. The optimal tax rate and optimal investment subsidy are identified and analyzed in the paper. It is shown that using a sub-optimal combination of incentives can result in substantial reduction of benefits for the government.     

税收优惠政策微观分析指标体系及方法研究——以高新技术企业为例

近几年,政府重视扶持高新技术企业的发展,给予了许多税收优惠,但税收优惠政策对高新技术企业的帮助有多大,哪项政策更有助于企业的发展,并没有一个客观的评价方法,由此导致了优惠政策重叠、脱节等问题的出现。为此,需要通过建立科学的税收优惠政策绩效评价指标体系,对高新技术企业税收优惠政策绩效进行考核。从简易科学、可操作性强的角度,探索建立以可持续增长率指标为主要依据的绩效评价方法,有利于客观有效地评价税收优惠政策的实际运用效果。