Post Addis Ababa, the debate on development finance focuses in large part on the generation of the necessary additional resources to support the Sustainable Development Goals (SDGs). Improving tax systems and compliance is an important element in this regard and strongly supported by the German Development Cooperation agency GIZ. Yet, taxation is only one side of the coin. Sound public financial management (PFM), especially at the level of sector ministries, should be the other. The generation of savings through more effective and efficient budgeting and expenditure policies in sectors may be as important for countries as resource mobilization through taxes. For instance, the IMF has recently shown that there is much to gain by reducing the inefficiencies around public investment management (IMF, 06/2015, Making Public Investment more Efficient). Moreover, the Collaborative Budget Reform Initiative (CABRI), through its sector dialogues, has done important work on highlighting the possible gains of improving value-for-money in program expenditure in key parts of the public sector. Sound investment policies and development-oriented public expenditure will enhance trust of citizens in their government and increase their willingness to pay taxes. Moreover, it will have a positive impact on the socio-economic environment of a country and generally, serve as a catalyst for development.