A key support for FCTC 2030 project countries is the development of a WHO FCTC investment case. These investment cases analyze the health and economic costs of tobacco use as well as the potential economic benefits that can come from implementing key WHO FCTC measures. Focusing on the economic rationale for tobacco control, the WHO FCTC investment cases provide policymakers and other stakeholders with country-level evidence to inform tobacco control policy-making. The investment case for Mongolia was prepared under the FCTC 2030 project in close collaboration with governments of FCTC 2030 project countries, the Convention Secretariat, UNDP and WHO.