This article describes changes made during 2016 & 2017 to the rules on the operation and qualification of retirement plans in Puerto Rico, including (1) the procedure the P.R. Department of the Treasury (Hacienda) adopted on December 15, 2016, for requesting favorable determination letters; (2) changes made to the local retirement plan rules under P.R. Act No. 9 of February 8, 2017 (Act No. 9-2017); and (3) the issuance of an updated version of Hacienda Form 480.7C (i.e., the local version of IRS Form 1099-R).