An IMF interdepartmental team—the Statistics Department, the Institute for Capacity Development, and the African Department—conducted an evaluation of how its external sector statistics (ESS) capacity develop￾ment (CD) has improved the availability of balance of payments and international investment position (IIP) data in Cabo Verde, Guinea, Madagascar, and Seychelles between fiscal year 2015 and fiscal year 2022.The evaluation was undertaken using an assessment approach proposed by the Organisation of Economic Co-operation and Development and was informed by the results frameworks envisaged for each technical assistance (TA), including interviews with IMF headquarters staff, data users, authorities, and experts.The evaluation team found that CD on ESS for Cabo Verde, Guinea, Madagascar, and Seychelles has largely helped improve the compilation and dissemination of balance of payments and IIP data. CD on ESS has been highly relevant for the needs of all four countries and helped capture significant economic activity. Central bank management and staff of all countries demonstrated a high level of buy-in and commitment to CD implementation. Expert surveys and interviews indicate care was given to the authorities’ priorities at CD design for relevance. IMF country teams considered ESS CD essential for informing IMF surveillance and supporting program objectives in general.