Budget funding
Although you can plan your budget using either top-down or bottom-up methods, the flow of actual money travels down the linked plan, program, project hierarchy. Regardless of how you plan your expenses, plans fund programs, which fund projects, which in turn fund any child or subprojects.
Hierarchy of a plan to programs to projects and subprojects image
For more information about budget planning, see Top-down budget planning and Bottom-up budget planning.
*
Top-down budget planning
Bottom-up budget planning