This policy paper: (i) provides a global overview of the organization of pension systems and their contribution to the Sustainable Development Goals (SDG’s); (ii) monitors SDG target 1.3.1 for older persons, analyses trends and recent policies in 192 countries, including the extension of legal and effective coverage in a large number of low- and middle-income countries, through a mix of contributory and non-contributory schemes; (iii) looks at persisting inequalities in access to income security in old-age; (iv) presents lessons from three decades of pension privatization and the trend to returning to public systems; (v) calls for countries to double their efforts to extend system coverage, including the extension of social protection floors, while at the same time improving the adequacy of benefits.