See the Tax Notes article by Gabriel Hernandez below where it says "all capital gains." In my blog, I asked Hernandez to clarify uncertainty about all versus long-term capital gains only, as I saw it written both ways. Hernandez said the law was "corrected" later. Excerpt of Tax Notes below.
B. The Puerto Rican Tax Rules
In January 2012 Puerto Rico passed Act No. 22 of 2012, which contains numerous incentives to encourage individuals to relocate to Puerto Rico. Thelaw provides the following benefits to new Puerto Rico bona fide residents (more on who qualifies as a new bona fide resident below): 100 percent tax exemption from Puerto Rican income taxes on all dividends; 100 percent tax exemption from Puerto Rican income taxes on all interest; and 100 percent tax exemption from Puerto Rican income taxes on all capital gains accrued after the individual becomes a bona fide resident of Puerto Rico. The new resident must not have been a resident of Puerto Rico at any time during the 15-year period preceding the effective date of Act No. 22, which period would be from January 16, 1997, through January 16, 2012.
This morning, I asked Mr. Hernandez for the cite in the law showing that correction to all capital gains. Thanks.