The Gumpert, Hines and Schnitzerat research uses data on German firms to investigate the motives for tax haven investment. Tax avoidance does appear to be a motive, particularly for manufacturing firms. Policies that raise the costs of reallocating profits maybe be effective in attenuating firms’ use of tax havens.
The column ends by arguing that
While the tax haven investments of some multinational firms attract considerable public attention, many multinational firms do not have affiliates in tax havens. Our evidence is consistent with tax avoidance as a motive for tax haven investments, in particular for manufacturing firms. At the same time, the size of a multinational firm’s operations and business opportunities in tax havens also induce multinational firms to invest in tax havens. As higher costs of reallocating profits attenuate firms’ tax haven use in response to higher taxation, policy measures that raise the costs of income reallocation may be effective at discouraging tax haven investment, as long as they do not induce firms to shift real activities to tax havens.Of course there does seem a much simpler way of stopping the use of tax havens, lower the company tax rate in non-haven countries.