To realize their domestic revenue potential, countries need research and technical cooperation. International organizations and bilateral donors provide essential training and resources to strengthen tax administrations and skills for policy analysis in government and academia. Governments in the Global South can progress faster towards the SDGs by partnering with experienced institutions. Technical assistance and research collaboration are key, with hands-on learning from experts. Collaborative efforts, including South-South and North-South partnerships, are crucial for establishing robust policy analysis and research infrastructure in the Global South.