The Basel AML Index methodology is reviewed each year to ensure that it continues to accurately capture
ML/TF risks. This may affect the comparability of the results over the years.
Comparability between countries is also hampered by a lack of full coverage of countries by FATF
fourth-round evaluations. Data from FATF Mutual Evaluation Reports (MERs) and Follow-up Reports, which
assess the quality of countries’ AML/CFT systems, makes up 35% of the total risk score in the Basel AML
Index. The FATF methodology was revised in 2013 (fourth round of evaluations) in order to assess not
only technical compliance with the FATF Recommendations but the effectiveness of AML/CFT systems
according to 11 Immediate Outcomes
As per July 2021, 111 jurisdictions had been evaluated with the FATF's fourth-round methodology.
Although coverage with fourth-round evaluations is increasing, several countries still have MERs based
on older methodologies.