Why did the Planning, Programming, and Budgeting System have limited success in the United States?

The Planning, Programming, and Budgeting System (PPBS) was introduced to the U.S. federal government in 1965 to replace incremental budgeting with a more rational, output-oriented approach. However, it achieved limited success and was ultimately abandoned in 1971 for several key reasons:

• Difficulty in Defining Objectives: A primary challenge was that the goals of many government programs were inherently difficult to specify, making it hard to measure success or compare alternative means of achievement.1
• Time-Intensive Processes: The requirement for comprehensive, systematic evaluation of programs proved to be too time-consuming for the practical realities of the federal budget cycle.1
• Institutional Inertia: The system faced significant resistance from entrenched institutions. The degree of inertia within government systems and the vested interests of existing agencies proved too powerful to be overcome by new administrative procedures.2
• Measurement Limitations: While PPBS relied on cost-benefit analysis, many essential public values—such as human life, health, and safety—are not easily quantifiable in monetary terms, limiting the effectiveness of purely quantitative economic measurements.1