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We design a spatial model featuring workers embodied with heterogeneous skills. In equilibrium, locations with improved market access become relatively more attractive to the high-skilled, high-income earners. We then empirically analyze the effects of the construction of the Swiss highway network between 1960 and 2010 on the distribution of income at the local level, as well as on employment and commuting by education level. We find that the advent of a new highway access within 10km led to a long-term 19%-increase of the share of high-income taxpayers and a 6%-decrease of the share of low-income taxpayers. Results are similar for employment data decomposed by education level, as well as for in- and outcommuters. Highways also contributed to job and residential urban sprawl

Interjurisdictional competition over mobile tax bases is an easily understood mechanism, but actual tax-base elasticities are difficult to estimate. Political pressure for reducing tax rates could therefore be based on erroneous estimates of the mobility of tax bases. We show that tax competition provided the most prominent argument in the policy debates leading to a succession of reforms of bequest taxation by Swiss cantons. Yet, canton-level panel data spanning multiple bequest tax reforms over a 36-year period suggest the relevant tax base, high-income retirees, to be relatively inelastic with respect to tax rates. The alleged pressures of tax competition did not seem in reality to exist.

We propose a new strategy to identify the existence of interjurisdictional tax competition and to estimate its spatial reach. Our strategy rests on differences between desired tax levels, determined by culture-specific preferences, and equilibrium tax levels, determined by interjurisdictional fiscal externalities as well as by preferences. While fiscal preferences differ systematically and demonstrably between French-speaking and German-speaking Swiss regions, we find that local income tax burdens do not change discretely at the language border but exhibit smooth spatial gradients. The slope of these gradients implies that tax competition constrains tax choices of jurisdictions with a preference for higher taxes at a distance of up to 20 kilometres. Hence, tax competition does constrain income taxation by local governments. When, as in the Swiss system, local jurisdictions are constrained to decide on a single shifter of an exogenously given tax schedule, the effect of tax competition are confined to a small spatial scale.

Interjurisdictional competition over mobile tax bases is an easily understood mechanism, but actual tax-base elasticities are difficult to estimate. Political pressure for reducing tax rates could therefore be based on erroneous estimates of the mobility of tax bases. We show that tax competition provided the overwhelmingly dominant argument in the policy debates leading to a succession of reforms of bequest taxation by Swiss cantons. Yet, we find only very weak statistical evidence of a relationship between tax burdens on bequests and the concerned tax base of wealthy elderly individuals. Moreover, inheritance tax revenues are found to increase in inheritance tax rates even in the long run, and actual tax rates lie well below the revenue-maximising levels throughout. The alleged pressures of tax competition did not seem in reality to exist.

The identification of strategic interactions among local governments is typically plagued by endogeneity problems. This paper proposes an identification strategy that makes use of a multi-tier federal system. State-level fiscal reforms provide an arguably exogenous source of variation in tax rates of local jurisdictions. Moreover, state borders spatially bound the effects of state-level fiscal reforms across areas that are otherwise highly integrated. Using the fact that local jurisdictions located close to a state border have some neighbors in another state, I propose to instrument the (average) tax rate of neighbor jurisdictions with the state-level tax rate of the neighboring state. I use this instrument to identify strategic personal income tax setting by local jurisdictions in Switzerland. In contrast to most of the existing empirical literature and to all results based on standard instruments, I find that tax rates are strategic substitutes in most cases. Tax rates are found to be strategic complements only in the context of large tax cuts.