In 2023, U.S. public pension spending stood at approximately 7.32% of GDP. Forecasts indicate a gradual increase from 7.36% in 2024 to 7.53% by 2028. The year-on-year growth is modest, averaging around 0.2% annually, yielding a compound annual growth rate (CAGR) of 0.57% over five years. Such incremental rises suggest stable, yet persistent pressure on GDP due to pension obligations.

Key future trends to watch include:

Demographic shifts as the population continues to age, potentially accelerating expenditure growth.
Economic health impacting GDP and pension fund investment returns.
Potential reforms in public pension policy to ensure sustainability.