Recovering lost tax to meet the health financing gap for universal public sector health systems in East and Southern Africa.

Addressing a total annual tax loss of US$34 billion from these three sources alone would almost completely finance the region's US$36 billion financing gap for a comprehensive public sector health system. The COVID-19 pandemic's exposure of the need for investment in public sector services suggests an opportunity for an alliance between health and finance sectors to ensure progressive taxation as the core funding for an equitable, universal health system. This implies costing the health funding demands and gap in ESA countries; strengthening domestic tax capacity, expanding wealth taxes, curbing illicit outflows and providing health evidence to ongoing African diplomacy for a fairer global tax system.