This paper is a contribution to United Nation (UN)-led efforts to articulate a post-2015 development framework, building on the Millennium Declaration and Millennium Development Goals (MDGs). It focuses on the challenge of financing development goals and complements the extensive work conducted by the United Nations and other institutions, including the World Bank Group. The paper is structured as follows. Section one outlines elements of what it will take to achieve development outcomes, the importance of a global development cooperation framework, the role of targeted, evidence-based policies and sound institutions; and the mobilization of resources for global public goods. Section two focuses on how best to support developing countries in mobilizing domestic resources for development, by boosting taxation capacity, harnessing natural resource revenue, improving expenditure efficiency, and curbing illicit financial flows. Section three examines issues of aid effectiveness and considers ways for development actors to provide better and smarter aid. Section four discusses trends in private financial flows to developing countries and the growing mismatch between available financing and investment needs. It then turns to strategies for mobilizing financing for long-term infrastructure. Finally, section five explores a range of emerging and innovative sources of finance, and the role an inclusive financial system can play to promote development.