per an old taxation agreement per an old tax agreement English pay most U.S. federal taxes per an old taxation agreement with 5.5% being "national" and 1.5% being "municipal." http://en.wikipedia.org/wiki/Taxation_in_Puerto_Rico http://en.wikipedia.org/wiki/Taxation_in_Puerto_Rico per an old taxation agreement per an old tax agreement per an old taxation agreement per an old tax agreement per an old taxation agreement per an old tax agreement Taxation in Puerto Rico per an old tax agreement per an old tax agreement