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.

     

Tax competition and fiscal equalization under corporate income taxation

This paper challenges the view that tax base equalization by the so-called representative tax system (RTS) removes inefficient undertaxation in corporate tax competition. The innovation of the paper is that it focuses on a tax on corporate income, instead of the unit tax on capital considered in previous studies. We employ a tax competition model with fiscal equalization and show that the RTS fails to fully internalize pecuniary and fiscal externalities. As a consequence, the RTS yields inefficiently low tax rates in the Nash equilibrium of the tax competition game between governments. Tax revenue equalization performs even worse, but combined with equalization of private income it implements the efficient tax rates on corporate income.     

Local government responsiveness to federal transfers: theory and evidence

Federal transfers can depend on local fiscal capacity which is measured by local tax bases. The aim of this paper is to understand to what extent and how these transfers affect local tax decisions. We develop a model with two provinces producing one mobile good. The good is taxed according to the destination principle. Final consumers decide to buy the good from the province where it is cheaper. The two provinces engage in tax competition. The introduction of scale economies into the shopping technology generates nonlinear tax reaction functions which make it possible to test the effect of a transfer equalizing local tax bases on tax competition in two complementary tax regimes. Used for this purpose are cigarette and gasoline tax data from Canada. In the case of cigarette tax, it is found that nonlinearity in tax competition is almost entirely offset when equalization holds: tax competition in the two tax regimes become closer. The shopping technology for gasoline gives less scope for scale economies, so that equalization does not affect reaction functions.      

Agglomeration,tax competition,and fiscal equalization

This paper analyzes the impact of fiscal equalization on asymmetric tax competition when positive agglomeration externalities are present. It uses a model focusing on the strategic reason for capital taxes to demonstrate that per capita fiscal capacity equalization improves the spatial allocation of capital provided a sufficiently rich (marginally) larger region and sufficiently strong agglomeration externalities. If tax revenue is used to finance public goods, per capita fiscal capacity equalization generally cannot simultaneously eliminate public good inefficiency and spatial inefficiency. However, the achievement of full efficiency for ex ante identical regions requires excessive (full) equalization in the presence (absence) of agglomeration externalities.     

Tax Evasion and Auditing in a Federal Economy

This paper analyzes the relation between tax auditing and fiscal equalization in the context of fiscal competition. We incorporate a model of tax evasion by firms into a standard tax competition framework where regional governments use their audit rates as a strategic instrument to engage in fiscal competition. We compare the region’s choice of audit policies for three different cases: A scenario of unconfined competition without interregional transfers, a scenario with a gross revenue equalization (GRS) scheme and finally, a scenario with net revenue sharing (NRS), where not only the revenues from taxation but also the regions auditing costs are shared. Without regional transfers, fiscal competition leads to audit rates which are inefficiently low for revenue-maximizing governments. While in general GRS aggravates the inefficiency, NRS makes the decentralized choice of auditing policies more efficient.JEL Code: H26, H71, H77     

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.     

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.     

Does competition for capital discipline governments? The role of fiscal equalization

This paper examines how a fiscal equalization system affects the disciplining effect of competition for capital among heterogeneous regions in a decentralized economy. I build a model in which regions that are heterogeneous in initial endowments try to attract capital by competing public input that enhances the productivity of capital; meanwhile, a fiscal equalization system is imposed by the central government to reduce regional disparities in fiscal capacity. The key prediction, borne out in data from the German equalization system, is that while competition for capital strengthens discipline in the well-endowed regions, it weakens discipline in the poorly endowed regions. However, a conventional equalization transfer scheme, common to many countries, can be effective in correcting the distortion driven by the heterogeneity of initial endowments across competing regions.     

Fiscal Externalities and Efficient Transfers in a Federation

This paper investigates properties of the second best allocation in a fiscal federal system in which both federal tax and intergovernmental grants are involved and the taxation is distortionary. Also, optimal federal grants and tax policies in a decentralized fiscal system are examined. Our major findings are: (i) the second best does not require the equalization of marginal cost of public funds across regions in a conventional form; (ii) matching grants based on either the local tax rates or tax revenues should be introduced to internalize the tax externality; and (iii) once lump-sum and matching grants are optimized, federal tax policy becomes redundant so the optimal fiscal gap is indeterminate.     

Does Fiscal Decentralization Promote Fiscal Discipline?

We investigate the efficiency and equity implications of a redistributive rule that takes into account both local tax collection efforts and deviation of local incomes from respective targets under alternative fiscal mechanisms. We show that, if the general budget constraint is binding, the proposed transfer rule leads to higher fiscal discipline under fiscal decentralization (FD) than under centralized redistribution. Although the centralized decision yields better income distribution than FD, FD also improves income distribution unambiguously when equalization across regions is targeted explicitly. When localities act strategically, the private sector’s utility weight enhances the disciplinary effect of decentralization.