N-2023-66: Interest rates

Notice 2023-66 sets forth updates on the corporate bond monthly yield curve, the corresponding spot segment rates for September 2023 used under § 417(e)(3)(D), the 24-month average segment rates applicable for September 2023, and the 30-year Treasury rates, as reflected by the application of § 430(h)(2)(C)(iv).

Notice 2023-66 will be in IRB: 2023-40, dated October 2, 2023.

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