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Ivar Kolstad (2017). Protected tax havens: Cornering the market through international reform? Bergen: Chr. Michelsen Institute (CMI Working Paper WP 2017:7)

Since the year 2000, an international reform process has been underway to reduce the negative impacts of tax havens. This paper analyzes whether the reform period has favoured protected tax havens, i.e. havens with strong connections to the UK, the EU, the United States and China, relative to tax havens without such connections. Using a difference in difference approach, we show that portfolio investment in protected havens increased significantly more than in unprotected havens in the period 1997 to 2015. In other words, through their associated territories, some of the most powerful countries in the world seem to have cornered the market for tax haven services during the reform period. This may make further reform more difficult.

Ivar Kolstad

Associated Research Professor