Higher interest rates already have translated into higher discount rates for solvency and accounting valuations, which means good news (lower liabilities) for DB pension plans. The sensitivity of a pension plan’s liabilities to the discount rate used to determine their value depends on the demographics of the plan members, the type of valuation and level of discount rates being used. Generally, the “duration” for most pension plan liabilities (defined here as the percentage decrease in liabilities for a 1% increase in discount rates) will range from 10 to 25.
In the United States, the average accounting funded ratio increased from 94.6% in July 2021 to 104.5% in July 2022, according to the Milliman 100 Pension Funding Index, despite significant decreases in plan assets during that time. This is because the average accounting discount rate (typically based on long-term, high-quality bond yields) increased from 2.59% to 4.25% during that same period, driving down accounting liabilities at a faster pace than asset losses. Figure 1 demonstrates this effect in more detail.
Author(s): John Melinte
Publication Date: November 2022
Publication Site: The Actuary at SOA