P.R. Laws tit. 21, § 651u
In the event of failure to submit any declaration required by §§ 651–652y of this title within the term prescribed by law or prescribed by the Finance Director pursuant to law, unless it is shown that said failure is due to reasonable cause and not to voluntary carelessness, there shall be added to the license tax: five percent (5%) if the failure does not last more than thirty (30) days and an additional five percent (5%) for each period or additional fraction thereof of thirty (30) days while the failure subsists, not to exceed twenty-five percent (25%) in all. The amount so added to any tax shall be collected at the same time and in the same manner and as part of the tax, unless it has been paid prior to the discovery of the failure, in which case the amount so added shall be collected in the same manner as the license tax.
History —July 10, 1974, No. 113, Part 1, p. 371, § 22; Nov. 17, 1992, No. 93, § 15.