Notice 2025-13 sets forth updates on the corporate bond monthly yield curve, the corresponding spot segment rates for December 2024 used under § 417(e)(3)(D), the 24-month average segment rates applicable for January 2025, and the 30-year Treasury rates, as reflected by the application of § 430(h)(2)(C)(iv).  

Notice 2025-13 will be in IRB:  2025-6, dated February 3, 2025.