1. The excise tax on alcoholic beverages (not applied on wine) is structured as an ad valorem tax applied on fixed tax base amounts—“precios fictos”—per volume varying per beverage type, effectively operating as a volume-based specific tax and classified as such in this analysis. 2. On automatic adjustment of specific excise, the fixed tax base amounts – “precios fictos” – are usually adjusted annually; however, it is not mandated by law.