“Anyone who becomes a bona-fide resident of Puerto Rico is now eligible for the following benefits, courtesy of a new law, Act 22: 100% tax exemption from Puerto Rico income taxes on all dividends and interest payments; 100% tax exemption from Puerto Rico income taxes on all short- and long-term capital gains accrued since becoming resident in the territory. The law is ideal for wealthy US citizens or green card holders who are now paying federal income taxes as high as 39.6% (plus the 3.8% Obamacare tax) on passive income and want to reduce their federal tax liability. If you reside in Puerto Rico and live off your portfolio income, you pay zero tax in the US or Puerto Rico.”
http://www.nestmann.com/is-puerto-rico-really-the-perfect-tax-haven