When studying the politics of taxation it is important to evaluate changes to the tax code in terms of rates, bases, and exemptions instead of just revenues. With that objective in mind, we have compiled a more comprehensive database of tax reforms for Latin America. In this article, we present a description of the database as well as the stylized facts. We also explore the economic and political determinants of reform such as the role of the economic and politico-institutional variables, and compare the results to the consensus. We find two interesting results. First, determinants of reforms seem to have changed over the years as democracies have solidified. Second, disaggregating reforms in various ways is a better strategy for understanding the mechanisms behind tax reforms than looking at the overall number of reforms. Having developed an exhaustive database that allows such disaggregation we provide motivation for future research on this topic.