The Trade and Transport Facilitation audit toolkit provides a simple and cost-effective instrument to analyze bottlenecks in international supply chains and to prepare corrective measures. Its key insight is that considerable knowledge can be easily obtained by interviewing key participants in the commercial or procedural transactions that combine to form international supply chains. These participants include private service providers such as freight forwarders, exporters, transporters and bankers as well as public agencies such as customs, port authorities, and transport regulators. The first chapters introduce the conceptual framework and some of the reasons for conducting an audit. The third describes the implementation of the audit including planning and scheduling, resource requirements and organization of the analysis and preparation of the reports. The annexes provide additional information on the concept, the methodology and content of the audit. The Interview Guides provides the scope for the meetings and checklists for all categories of interviewees and field visits.