This note discusses administrative measures that can be implemented by customs administrations of low-income and fragile countries in a short period (about a year) to improve traders’ compliance and improve revenue collection. These suggested actions have been identified based on the experience acquired through the International Monetary Fund’s (IMF) Fiscal Affairs Department’s (FAD) technical assistance (TA), particularly the findings and recommendations of TA missions to sub-Saharan African countries. Strengthening low-capacity customs administrations requires structural reforms to support the effective implementation of defined strategies. Developing core operational functions such as risk management, audit, investigation and intelligence are good examples of such reforms. Modernizing human resource management policies or achieving a fully automated environment in a customs administration are longer-term reform projects. Long-term reforms are not addressed here. The note focuses on targeted actions with a potential to increase trade revenue in the short term, and which can be taken without mobilizing large resources or engaging in a broad reorganization. It is hoped that the suggestions in this note will help stakeholders, including country authorities, customs management, donors and TA partners, area departments of the IMF, FAD, and the IMF regional TA centers, identify, design, and implement short-term changes in customs administrations. If implemented effectively, these changes should contribute to a noticeable improvement of revenue performance.