We recommend the institution of a Global Citizen Income as a stepping stone toward fostering social, civil and political citizenship at the global level. We outline a gradual implementation roadmap and propose increased international aid, a mix of progressive global taxes and a carbon tax, to fund it. A Global Citizen Income would provide an automatic safety net against systemic shocks like COVID-19 and empower individuals starting, from the most vulnerable. We urge the G20 to take the lead in establishing a Global Citizenship Fund and a Convention for Global Citizenship under the aegis of the United Nations.