In the fight against Money Laundering, the effectiveness of the task known as the Suspicious Activity Report (SAR), undoubtedly, constitutes one of the main protection shields for Obligated Subjects to their prevention with Risk-Based Approach (RBA). It stands as one of the most relevant sources of information for the analytical work of a Financial Intelligence Unit (FIU). It is the starting point for subsequent investigation, prosecution and application of criminal measures, and it is an incentive of great importance for decision-making in administrative, criminal and criminological policies for its confrontation in its dual profile: as a Risk, and as a Crime. And all this at an accelerated pace since, in addition to its seriousness, by the devastation it represents to the stability of a country’s socio-economic financial order, its implementation and effectiveness, is being permanently monitored and qualified by international agencies specialized in the matter, and whose reports work as a basic criterionto measure Country- Risk, and therefore a true radar for attracting lawful investments. Then again, it becomes necessary to understand the guidelines for an effective SAR, and understand, in order to mitigate its impact, the most common reasons for its non-compliance, as a consequence of infractions to specific legal frameworks, that can make the whole Anti-Money Laundering system of a country, ineffective. Definitely, the presentation of a SAR with Quality,Timeliness and Accuracy, directly affects the mitigation of the Risk of Financial Crime, in pursuit of the health of businesses and the economy.