The following article was inspired by the news that the MSAR prepares to publish a Code of Fiscal Procedure. The author only had access to a project draft submitted in 2011, though, it seems there is a new project. The article is divided into three parts. The first is addressed to the notions of what it is a Code of Fiscal Procedure, exemplified with existing diplomas in various countries. The second part is about how the tax procedure is regulated in the MSAR, focusing on the existence of many rules inconsistencies and contradictions. Finally, in the third part, we make a brief analysis of the project (presented in the Legislative Assembly in 2011 and later withdrawn), concluding that MSAR needs a regulation of this kind, and considering the presented project, it is positive and corresponds to what is regulated in other countries of the world, and can be improved.