IRS Notice: Update for Weighted Average Interest Rates, Yield Curves, Segment Rates (IRC §417(e)(3), §430(h)(2))

The IRS published updated guidance providing corporate bond monthly yield curves, corresponding spot segment rates, and 24-month average segment rates used for pension plan funding calculations. The notice establishes the monthly corporate bond yield curve for October 2025, with spot segment rates of 4.01 percent, 5.04 percent, and 5.83 percent for the first, second, and third segments, respectively. The guidance includes 24-month average segment rates for November 2025, adjusted to fall within the applicable 95-105 percent corridor of corresponding 25-year average segment rates for plan years beginning in 2024, 2025, and 2026. The notice also provides 30-year Treasury security interest ...