To foster unity and cooperation among all cities in the country
To promote the interest and welfare of its members
To provide a cohesive force that embodies the sentiments and aspirations of its members and advocates the principles, among others, of enhanced devolution and decentralization, integrated development planning, coordination of basic services between the national government and the cities as well as between cities, and democratization of participation, representation and resources in local governance
To serve as a forum of discussion and a feedback mechanism on policies affecting city governments
To collaborate with national and other local government agencies in attaining efficient and effective inter-government relations to provide development programs that will enrich and upgrade the capabilities of city governments