The economic impact model and supporting disease-specific tools estimate the direct and indirect economic impact, efficiencies, and societal benefits of investing in NTD programs and interventions. The workshop will explain how NTD programs can use the supporting tools to develop investment cases to advocate for domestic resources and prioritize NTD investments in a multi-disease environment. It will also describe how, with support from HKI and Deloitte, Sierra Leone’s NTD program will pilot these tools and serve as the advisor on country needs, program and financial data, user testing of the tools, and utilization of the outputs for advocacy. After incorporating the feedback from the pilot in Sierra Leone, the Act | West team will make the tools available to all supported countries to create investment cases that enhance advocacy efforts for domestic resource mobilization for NTD programming.