How Sensitive Is Public Pension Funding to Investment Returns?

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SLP#34

The brief’s key findings are:

  • To assess the sensitivity of pension funding to investment returns, the analysis projects funded ratios through 2042 for large public plans using:
    • a stochastic model of year-to-year returns; and
    • a median real return of 4.45 percent, the average used by plans in 2012.
  • The baseline results show that the funded ratio for the 50th-percentile outcome does not reach 100 percent because:
    • plans pay only 80 percent of annual required contributions (ARC); and
    • amortization approaches produce inadequate contributions.
  • Paying 100 percent of the ARC and using more robust funding approaches leads to near full funding by the end of the period.
  • However, even under these more favorable scenarios, the variability of returns still poses risks of funding shortfalls.

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