The Institute of Medicine's 2012 report on U.S. public health financing recommended research to identify the components and costs of a "minimum package" of public health services and foundational capabilities to be made available in every U.S. community. We present results from pilot testing of a proposed methodology for estimating the costs and resource requirements for a set of foundational public health capabilities identified by the Public Health Leadership Forum. Using pilot data from Kentucky public health settings, we estimate both current and projected costs under a range of assumptions about the resources required to fully implement the capabilities at state and local levels of the public health system.