IRS Issues PLR Approving Substitute Mortality Tables for Pension Plan Following Merger

The IRS has issued a private letter ruling on I.R.C. §430 approving substitute mortality tables for a defined benefit pension plan following significant population changes from plan mergers. The taxpayer received authorization to use plan-specific base substitute mortality tables for male and female participants for a period of five plan years beginning Jan. 1, 2026, based on an experience study covering Jan. 2023 through Dec. 2024. Annual enrolled actuary certifications must confirm the tables remain accurately predictive of future mortality experience. [PLR 202613005]

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