The role of DNPM is to lead, plan, coordinate and facilitate appropriate national and international initiatives that addresses and promotes equitable and sustainable development of Papua New Guinea, in accordance with both a long-term vision for the Nation that has the support of the citizens of Papua New Guinea and the five (5) directive principles of the National Constitution. 

The Department of National Planning and Monitoring acts as the key central agency advising Government on matters relating to strategic development; development policy; development planning and programming; foreign aid coordination and management; and monitoring and evaluation of national development projects and programmes.