The author first assesses the nature and extent of the international
mobility of foreign direct investment (FDI), based on the operations of
US multinational corporations abroad (production, employment, and
capital stock), not simply on financial flows of foreign affiliates. He
considers whether distinctions between horizontal and vertical
integration can be applied to operations in developed versus developing
countries and whether either form of integration is sensitive to tax and
cost conditions, not only in the host country but also in the United
States. Growing sensitivity of FDI to taxes is one reason for
governments to be concerned about tax competition among jurisdictions to
attract economic activity. Tax competition, however, also arises from an
attempt to shift the tax base from one jurisdiction to another, with no
real change in the location of real activity. Mutti's second objective
is to assess how tax competition is affecting the structure of national
tax systems and whether efforts at international coordination of tax
policy are likely to affect the progression of such changes.